/src/php-src/Zend/zend.c

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/*
   +----------------------------------------------------------------------+
   | Zend Engine                                                          |
   +----------------------------------------------------------------------+
   | Copyright (c) Zend Technologies Ltd. (http://www.zend.com)           |
   +----------------------------------------------------------------------+
   | This source file is subject to version 2.00 of the Zend license,     |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.zend.com/license/2_00.txt.                                |
   | If you did not receive a copy of the Zend license and are unable to  |
   | obtain it through the world-wide-web, please send a note to          |
   | license@zend.com so we can mail you a copy immediately.              |
   +----------------------------------------------------------------------+
   | Authors: Andi Gutmans <andi@php.net>                                 |
   |          Zeev Suraski <zeev@php.net>                                 |
   +----------------------------------------------------------------------+
*/

#include "zend.h"
#include "zend_extensions.h"
#include "zend_modules.h"
#include "zend_constants.h"
#include "zend_list.h"
#include "zend_API.h"
#include "zend_exceptions.h"
#include "zend_builtin_functions.h"
#include "zend_ini.h"
#include "zend_vm.h"
#include "zend_dtrace.h"
#include "zend_virtual_cwd.h"
#include "zend_smart_str.h"
#include "zend_smart_string.h"
#include "zend_cpuinfo.h"
#include "zend_attributes.h"
#include "zend_observer.h"
#include "zend_fibers.h"
#include "Optimizer/zend_optimizer.h"

static size_t global_map_ptr_last = 0;
static bool startup_done = false;

#ifdef ZTS
ZEND_API int compiler_globals_id;
ZEND_API int executor_globals_id;
ZEND_API size_t compiler_globals_offset;
ZEND_API size_t executor_globals_offset;
static HashTable *global_function_table = NULL;
static HashTable *global_class_table = NULL;
static HashTable *global_constants_table = NULL;
static HashTable *global_auto_globals_table = NULL;
static HashTable *global_persistent_list = NULL;
TSRMLS_MAIN_CACHE_DEFINE()
# define GLOBAL_FUNCTION_TABLE    global_function_table
# define GLOBAL_CLASS_TABLE     global_class_table
# define GLOBAL_CONSTANTS_TABLE   global_constants_table
# define GLOBAL_AUTO_GLOBALS_TABLE  global_auto_globals_table
#else
# define GLOBAL_FUNCTION_TABLE    CG(function_table)
# define GLOBAL_CLASS_TABLE     CG(class_table)
# define GLOBAL_AUTO_GLOBALS_TABLE  CG(auto_globals)
# define GLOBAL_CONSTANTS_TABLE   EG(zend_constants)
#endif

ZEND_API zend_utility_values zend_uv;
ZEND_API bool zend_dtrace_enabled;

/* version information */
static char *zend_version_info;
static uint32_t zend_version_info_length;
#define ZEND_CORE_VERSION_INFO  "Zend Engine v" ZEND_VERSION ", Copyright (c) Zend Technologies\n"
#define PRINT_ZVAL_INDENT 4

/* true multithread-shared globals */
ZEND_API zend_class_entry *zend_standard_class_def = NULL;
ZEND_API size_t (*zend_printf)(const char *format, ...);
ZEND_API zend_write_func_t zend_write;
ZEND_API FILE *(*zend_fopen)(zend_string *filename, zend_string **opened_path);
ZEND_API zend_result (*zend_stream_open_function)(zend_file_handle *handle);
ZEND_API void (*zend_ticks_function)(int ticks);
ZEND_API void (*zend_interrupt_function)(zend_execute_data *execute_data);
ZEND_API void (*zend_error_cb)(int type, zend_string *error_filename, const uint32_t error_lineno, zend_string *message);
void (*zend_printf_to_smart_string)(smart_string *buf, const char *format, va_list ap);
void (*zend_printf_to_smart_str)(smart_str *buf, const char *format, va_list ap);
ZEND_API char *(*zend_getenv)(const char *name, size_t name_len);
ZEND_API zend_string *(*zend_resolve_path)(zend_string *filename);
ZEND_API zend_result (*zend_post_startup_cb)(void) = NULL;
ZEND_API void (*zend_post_shutdown_cb)(void) = NULL;

/* This callback must be signal handler safe! */
void (*zend_on_timeout)(int seconds);

static void (*zend_message_dispatcher_p)(zend_long message, const void *data);
static zval *(*zend_get_configuration_directive_p)(zend_string *name);

#if ZEND_RC_DEBUG
ZEND_API bool zend_rc_debug = 0;
#endif

static ZEND_INI_MH(OnUpdateErrorReporting) /* {{{ */
{
  if (!new_value) {
    EG(error_reporting) = E_ALL;
  } else {
    EG(error_reporting) = atoi(ZSTR_VAL(new_value));
  }
  return SUCCESS;
}
/* }}} */

static ZEND_INI_MH(OnUpdateGCEnabled) /* {{{ */
{
  bool val;

  val = zend_ini_parse_bool(new_value);
  gc_enable(val);

  return SUCCESS;
}
/* }}} */

static ZEND_INI_DISP(zend_gc_enabled_displayer_cb) /* {{{ */
{
  if (gc_enabled()) {
    ZEND_PUTS("On");
  } else {
    ZEND_PUTS("Off");
  }
}
/* }}} */


static ZEND_INI_MH(OnUpdateScriptEncoding) /* {{{ */
{
  if (!CG(multibyte)) {
    return FAILURE;
  }
  if (!zend_multibyte_get_functions()) {
    return SUCCESS;
  }
  return zend_multibyte_set_script_encoding_by_string(new_value ? ZSTR_VAL(new_value) : NULL, new_value ? ZSTR_LEN(new_value) : 0);
}
/* }}} */

static ZEND_INI_MH(OnUpdateAssertions) /* {{{ */
{
  zend_long *p = (zend_long *) ZEND_INI_GET_ADDR();

  zend_long val = zend_ini_parse_quantity_warn(new_value, entry->name);

  if (stage != ZEND_INI_STAGE_STARTUP &&
      stage != ZEND_INI_STAGE_SHUTDOWN &&
      *p != val &&
      (*p < 0 || val < 0)) {
    zend_error(E_WARNING, "zend.assertions may be completely enabled or disabled only in php.ini");
    return FAILURE;
  }

  *p = val;
  return SUCCESS;
}
/* }}} */

static ZEND_INI_MH(OnSetExceptionStringParamMaxLen) /* {{{ */
{
  zend_long i = ZEND_ATOL(ZSTR_VAL(new_value));
  if (i >= 0 && i <= 1000000) {
    EG(exception_string_param_max_len) = i;
    return SUCCESS;
  } else {
    return FAILURE;
  }
}
/* }}} */

static ZEND_INI_MH(OnUpdateFiberStackSize) /* {{{ */
{
  if (new_value) {
    EG(fiber_stack_size) = zend_ini_parse_quantity_warn(new_value, entry->name);
  } else {
    EG(fiber_stack_size) = ZEND_FIBER_DEFAULT_C_STACK_SIZE;
  }
  return SUCCESS;
}
/* }}} */

#if ZEND_DEBUG
# define SIGNAL_CHECK_DEFAULT "1"
#else
# define SIGNAL_CHECK_DEFAULT "0"
#endif

ZEND_INI_BEGIN()
  ZEND_INI_ENTRY("error_reporting",       NULL,   ZEND_INI_ALL,   OnUpdateErrorReporting)
  STD_ZEND_INI_ENTRY("zend.assertions",       "1",    ZEND_INI_ALL,       OnUpdateAssertions,           assertions,   zend_executor_globals,  executor_globals)
  ZEND_INI_ENTRY3_EX("zend.enable_gc",        "1",  ZEND_INI_ALL,   OnUpdateGCEnabled, NULL, NULL, NULL, zend_gc_enabled_displayer_cb)
  STD_ZEND_INI_BOOLEAN("zend.multibyte", "0", ZEND_INI_PERDIR, OnUpdateBool, multibyte,      zend_compiler_globals, compiler_globals)
  ZEND_INI_ENTRY("zend.script_encoding",      NULL,   ZEND_INI_ALL,   OnUpdateScriptEncoding)
  STD_ZEND_INI_BOOLEAN("zend.detect_unicode",     "1",  ZEND_INI_ALL,   OnUpdateBool, detect_unicode, zend_compiler_globals, compiler_globals)
#ifdef ZEND_SIGNALS
  STD_ZEND_INI_BOOLEAN("zend.signal_check", SIGNAL_CHECK_DEFAULT, ZEND_INI_SYSTEM, OnUpdateBool, check, zend_signal_globals_t, zend_signal_globals)
#endif
  STD_ZEND_INI_BOOLEAN("zend.exception_ignore_args",  "0",  ZEND_INI_ALL,   OnUpdateBool, exception_ignore_args, zend_executor_globals, executor_globals)
  STD_ZEND_INI_ENTRY("zend.exception_string_param_max_len", "15", ZEND_INI_ALL, OnSetExceptionStringParamMaxLen,  exception_string_param_max_len,   zend_executor_globals,  executor_globals)
  STD_ZEND_INI_ENTRY("fiber.stack_size",    NULL,     ZEND_INI_ALL,   OnUpdateFiberStackSize,   fiber_stack_size, zend_executor_globals,    executor_globals)

ZEND_INI_END()

ZEND_API size_t zend_vspprintf(char **pbuf, size_t max_len, const char *format, va_list ap) /* {{{ */
{
  smart_string buf = {0};

  /* since there are places where (v)spprintf called without checking for null,
     a bit of defensive coding here */
  if (!pbuf) {
    return 0;
  }

  zend_printf_to_smart_string(&buf, format, ap);

  if (max_len && buf.len > max_len) {
    buf.len = max_len;
  }

  smart_string_0(&buf);

  if (buf.c) {
    *pbuf = buf.c;
    return buf.len;
  } else {
    *pbuf = estrndup("", 0);
    return 0;
  }
}
/* }}} */

ZEND_API size_t zend_spprintf(char **message, size_t max_len, const char *format, ...) /* {{{ */
{
  va_list arg;
  size_t len;

  va_start(arg, format);
  len = zend_vspprintf(message, max_len, format, arg);
  va_end(arg);
  return len;
}
/* }}} */

ZEND_API size_t zend_spprintf_unchecked(char **message, size_t max_len, const char *format, ...) /* {{{ */
{
  va_list arg;
  size_t len;

  va_start(arg, format);
  len = zend_vspprintf(message, max_len, format, arg);
  va_end(arg);
  return len;
}
/* }}} */

ZEND_API zend_string *zend_vstrpprintf(size_t max_len, const char *format, va_list ap) /* {{{ */
{
  smart_str buf = {0};

  zend_printf_to_smart_str(&buf, format, ap);

  if (!buf.s) {
    return ZSTR_EMPTY_ALLOC();
  }

  if (max_len && ZSTR_LEN(buf.s) > max_len) {
    ZSTR_LEN(buf.s) = max_len;
  }

  return smart_str_extract(&buf);
}
/* }}} */

ZEND_API zend_string *zend_strpprintf(size_t max_len, const char *format, ...) /* {{{ */
{
  va_list arg;
  zend_string *str;

  va_start(arg, format);
  str = zend_vstrpprintf(max_len, format, arg);
  va_end(arg);
  return str;
}
/* }}} */

ZEND_API zend_string *zend_strpprintf_unchecked(size_t max_len, const char *format, ...) /* {{{ */
{
  va_list arg;
  zend_string *str;

  va_start(arg, format);
  str = zend_vstrpprintf(max_len, format, arg);
  va_end(arg);
  return str;
}
/* }}} */

static void zend_print_zval_r_to_buf(smart_str *buf, zval *expr, int indent);

static void print_hash(smart_str *buf, HashTable *ht, int indent, bool is_object) /* {{{ */
{
  zval *tmp;
  zend_string *string_key;
  zend_ulong num_key;
  int i;

  for (i = 0; i < indent; i++) {
    smart_str_appendc(buf, ' ');
  }
  smart_str_appends(buf, "(\n");
  indent += PRINT_ZVAL_INDENT;
  ZEND_HASH_FOREACH_KEY_VAL_IND(ht, num_key, string_key, tmp) {
    for (i = 0; i < indent; i++) {
      smart_str_appendc(buf, ' ');
    }
    smart_str_appendc(buf, '[');
    if (string_key) {
      if (is_object) {
        const char *prop_name, *class_name;
        size_t prop_len;
        int mangled = zend_unmangle_property_name_ex(string_key, &class_name, &prop_name, &prop_len);

        smart_str_appendl(buf, prop_name, prop_len);
        if (class_name && mangled == SUCCESS) {
          if (class_name[0] == '*') {
            smart_str_appends(buf, ":protected");
          } else {
            smart_str_appends(buf, ":");
            smart_str_appends(buf, class_name);
            smart_str_appends(buf, ":private");
          }
        }
      } else {
        smart_str_append(buf, string_key);
      }
    } else {
      smart_str_append_long(buf, num_key);
    }
    smart_str_appends(buf, "] => ");
    zend_print_zval_r_to_buf(buf, tmp, indent+PRINT_ZVAL_INDENT);
    smart_str_appends(buf, "\n");
  } ZEND_HASH_FOREACH_END();
  indent -= PRINT_ZVAL_INDENT;
  for (i = 0; i < indent; i++) {
    smart_str_appendc(buf, ' ');
  }
  smart_str_appends(buf, ")\n");
}
/* }}} */

static void print_flat_hash(smart_str *buf, HashTable *ht) /* {{{ */
{
  zval *tmp;
  zend_string *string_key;
  zend_ulong num_key;
  int i = 0;

  ZEND_HASH_FOREACH_KEY_VAL_IND(ht, num_key, string_key, tmp) {
    if (i++ > 0) {
      smart_str_appendc(buf, ',');
    }
    smart_str_appendc(buf, '[');
    if (string_key) {
      smart_str_append(buf, string_key);
    } else {
      smart_str_append_unsigned(buf, num_key);
    }
    smart_str_appends(buf, "] => ");
    zend_print_flat_zval_r_to_buf(buf, tmp);
  } ZEND_HASH_FOREACH_END();
}
/* }}} */

ZEND_API bool zend_make_printable_zval(zval *expr, zval *expr_copy) /* {{{ */
{
  if (Z_TYPE_P(expr) == IS_STRING) {
    return 0;
  } else {
    ZVAL_STR(expr_copy, zval_get_string_func(expr));
    return 1;
  }
}
/* }}} */

ZEND_API size_t zend_print_zval(zval *expr, int indent) /* {{{ */
{
  zend_string *tmp_str;
  zend_string *str = zval_get_tmp_string(expr, &tmp_str);
  size_t len = ZSTR_LEN(str);

  if (len != 0) {
    zend_write(ZSTR_VAL(str), len);
  }

  zend_tmp_string_release(tmp_str);
  return len;
}
/* }}} */

void zend_print_flat_zval_r_to_buf(smart_str *buf, zval *expr) /* {{{ */
{
  switch (Z_TYPE_P(expr)) {
    case IS_ARRAY:
      smart_str_appends(buf, "Array (");
      if (!(GC_FLAGS(Z_ARRVAL_P(expr)) & GC_IMMUTABLE)) {
        if (GC_IS_RECURSIVE(Z_ARRVAL_P(expr))) {
          smart_str_appends(buf, " *RECURSION*");
          return;
        }
        GC_PROTECT_RECURSION(Z_ARRVAL_P(expr));
      }
      print_flat_hash(buf, Z_ARRVAL_P(expr));
      smart_str_appendc(buf, ')');
      GC_TRY_UNPROTECT_RECURSION(Z_ARRVAL_P(expr));
      break;
    case IS_OBJECT:
    {
      HashTable *properties;
      zend_string *class_name = Z_OBJ_HANDLER_P(expr, get_class_name)(Z_OBJ_P(expr));
      smart_str_append(buf, class_name);
      smart_str_appends(buf, " Object (");
      zend_string_release_ex(class_name, 0);

      if (GC_IS_RECURSIVE(Z_COUNTED_P(expr))) {
        smart_str_appends(buf, " *RECURSION*");
        return;
      }

      properties = Z_OBJPROP_P(expr);
      if (properties) {
        GC_PROTECT_RECURSION(Z_OBJ_P(expr));
        print_flat_hash(buf, properties);
        GC_UNPROTECT_RECURSION(Z_OBJ_P(expr));
      }
      smart_str_appendc(buf, ')');
      break;
    }
    case IS_REFERENCE:
      zend_print_flat_zval_r_to_buf(buf, Z_REFVAL_P(expr));
      break;
    case IS_STRING:
      smart_str_append(buf, Z_STR_P(expr));
      break;
    default:
    {
      zend_string *str = zval_get_string_func(expr);
      smart_str_append(buf, str);
      zend_string_release_ex(str, 0);
      break;
    }
  }
}
/* }}} */

ZEND_API void zend_print_flat_zval_r(zval *expr)
{
  smart_str buf = {0};
  zend_print_flat_zval_r_to_buf(&buf, expr);
  smart_str_0(&buf);
  zend_write(ZSTR_VAL(buf.s), ZSTR_LEN(buf.s));
  smart_str_free(&buf);
}

static void zend_print_zval_r_to_buf(smart_str *buf, zval *expr, int indent) /* {{{ */
{
  switch (Z_TYPE_P(expr)) {
    case IS_ARRAY:
      smart_str_appends(buf, "Array\n");
      if (!(GC_FLAGS(Z_ARRVAL_P(expr)) & GC_IMMUTABLE)) {
        if (GC_IS_RECURSIVE(Z_ARRVAL_P(expr))) {
          smart_str_appends(buf, " *RECURSION*");
          return;
        }
        GC_PROTECT_RECURSION(Z_ARRVAL_P(expr));
      }
      print_hash(buf, Z_ARRVAL_P(expr), indent, 0);
      GC_TRY_UNPROTECT_RECURSION(Z_ARRVAL_P(expr));
      break;
    case IS_OBJECT:
      {
        HashTable *properties;

        zend_object *zobj = Z_OBJ_P(expr);
        zend_string *class_name = Z_OBJ_HANDLER_P(expr, get_class_name)(zobj);
        smart_str_appends(buf, ZSTR_VAL(class_name));
        zend_string_release_ex(class_name, 0);

        if (!(zobj->ce->ce_flags & ZEND_ACC_ENUM)) {
          smart_str_appends(buf, " Object\n");
        } else {
          smart_str_appends(buf, " Enum");
          if (zobj->ce->enum_backing_type != IS_UNDEF) {
            smart_str_appendc(buf, ':');
            smart_str_appends(buf, zend_get_type_by_const(zobj->ce->enum_backing_type));
          }
          smart_str_appendc(buf, '\n');
        }

        if (GC_IS_RECURSIVE(Z_OBJ_P(expr))) {
          smart_str_appends(buf, " *RECURSION*");
          return;
        }

        if ((properties = zend_get_properties_for(expr, ZEND_PROP_PURPOSE_DEBUG)) == NULL) {
          break;
        }

        GC_PROTECT_RECURSION(Z_OBJ_P(expr));
        print_hash(buf, properties, indent, 1);
        GC_UNPROTECT_RECURSION(Z_OBJ_P(expr));

        zend_release_properties(properties);
        break;
      }
    case IS_LONG:
      smart_str_append_long(buf, Z_LVAL_P(expr));
      break;
    case IS_REFERENCE:
      zend_print_zval_r_to_buf(buf, Z_REFVAL_P(expr), indent);
      break;
    case IS_STRING:
      smart_str_append(buf, Z_STR_P(expr));
      break;
    default:
      {
        zend_string *str = zval_get_string_func(expr);
        smart_str_append(buf, str);
        zend_string_release_ex(str, 0);
      }
      break;
  }
}
/* }}} */

ZEND_API zend_string *zend_print_zval_r_to_str(zval *expr, int indent) /* {{{ */
{
  smart_str buf = {0};
  zend_print_zval_r_to_buf(&buf, expr, indent);
  smart_str_0(&buf);
  return buf.s;
}
/* }}} */

ZEND_API void zend_print_zval_r(zval *expr, int indent) /* {{{ */
{
  zend_string *str = zend_print_zval_r_to_str(expr, indent);
  zend_write(ZSTR_VAL(str), ZSTR_LEN(str));
  zend_string_release_ex(str, 0);
}
/* }}} */

static FILE *zend_fopen_wrapper(zend_string *filename, zend_string **opened_path) /* {{{ */
{
  if (opened_path) {
    *opened_path = zend_string_copy(filename);
  }
  return fopen(ZSTR_VAL(filename), "rb");
}
/* }}} */

#ifdef ZTS
static bool short_tags_default      = 1;
static uint32_t compiler_options_default = ZEND_COMPILE_DEFAULT;
#else
# define short_tags_default     1
# define compiler_options_default ZEND_COMPILE_DEFAULT
#endif

static void zend_set_default_compile_time_values(void) /* {{{ */
{
  /* default compile-time values */
  CG(short_tags) = short_tags_default;
  CG(compiler_options) = compiler_options_default;

  CG(rtd_key_counter) = 0;
}
/* }}} */

#ifdef ZEND_WIN32
static void zend_get_windows_version_info(OSVERSIONINFOEX *osvi) /* {{{ */
{
  ZeroMemory(osvi, sizeof(OSVERSIONINFOEX));
  osvi->dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
  if(!GetVersionEx((OSVERSIONINFO *) osvi)) {
    ZEND_UNREACHABLE(); /* Should not happen as sizeof is used. */
  }
}
/* }}} */
#endif

static void zend_init_exception_op(void) /* {{{ */
{
  memset(EG(exception_op), 0, sizeof(EG(exception_op)));
  EG(exception_op)[0].opcode = ZEND_HANDLE_EXCEPTION;
  ZEND_VM_SET_OPCODE_HANDLER(EG(exception_op));
  EG(exception_op)[1].opcode = ZEND_HANDLE_EXCEPTION;
  ZEND_VM_SET_OPCODE_HANDLER(EG(exception_op)+1);
  EG(exception_op)[2].opcode = ZEND_HANDLE_EXCEPTION;
  ZEND_VM_SET_OPCODE_HANDLER(EG(exception_op)+2);
}
/* }}} */

static void zend_init_call_trampoline_op(void) /* {{{ */
{
  memset(&EG(call_trampoline_op), 0, sizeof(EG(call_trampoline_op)));
  EG(call_trampoline_op).opcode = ZEND_CALL_TRAMPOLINE;
  ZEND_VM_SET_OPCODE_HANDLER(&EG(call_trampoline_op));
}
/* }}} */

static void auto_global_dtor(zval *zv) /* {{{ */
{
  free(Z_PTR_P(zv));
}
/* }}} */

#ifdef ZTS
static void function_copy_ctor(zval *zv) /* {{{ */
{
  zend_function *old_func = Z_FUNC_P(zv);
  zend_function *func;

  if (old_func->type == ZEND_USER_FUNCTION) {
    ZEND_ASSERT(old_func->op_array.fn_flags & ZEND_ACC_IMMUTABLE);
    return;
  }
  func = pemalloc(sizeof(zend_internal_function), 1);
  Z_FUNC_P(zv) = func;
  memcpy(func, old_func, sizeof(zend_internal_function));
  function_add_ref(func);
  if ((old_func->common.fn_flags & (ZEND_ACC_HAS_RETURN_TYPE|ZEND_ACC_HAS_TYPE_HINTS))
   && old_func->common.arg_info) {
    uint32_t i;
    uint32_t num_args = old_func->common.num_args + 1;
    zend_arg_info *arg_info = old_func->common.arg_info - 1;
    zend_arg_info *new_arg_info;

    if (old_func->common.fn_flags & ZEND_ACC_VARIADIC) {
      num_args++;
    }
    new_arg_info = pemalloc(sizeof(zend_arg_info) * num_args, 1);
    memcpy(new_arg_info, arg_info, sizeof(zend_arg_info) * num_args);
    for (i = 0 ; i < num_args; i++) {
      if (ZEND_TYPE_HAS_LIST(arg_info[i].type)) {
        zend_type_list *old_list = ZEND_TYPE_LIST(arg_info[i].type);
        zend_type_list *new_list = pemalloc(ZEND_TYPE_LIST_SIZE(old_list->num_types), 1);
        memcpy(new_list, old_list, ZEND_TYPE_LIST_SIZE(old_list->num_types));
        ZEND_TYPE_SET_PTR(new_arg_info[i].type, new_list);

        zend_type *list_type;
        ZEND_TYPE_LIST_FOREACH(new_list, list_type) {
          zend_string *name = zend_string_dup(ZEND_TYPE_NAME(*list_type), 1);
          ZEND_TYPE_SET_PTR(*list_type, name);
        } ZEND_TYPE_LIST_FOREACH_END();
      } else if (ZEND_TYPE_HAS_NAME(arg_info[i].type)) {
        zend_string *name = zend_string_dup(ZEND_TYPE_NAME(arg_info[i].type), 1);
        ZEND_TYPE_SET_PTR(new_arg_info[i].type, name);
      }
    }
    func->common.arg_info = new_arg_info + 1;
  }
  if (old_func->common.attributes) {
    zend_attribute *old_attr;

    func->common.attributes = NULL;

    ZEND_HASH_PACKED_FOREACH_PTR(old_func->common.attributes, old_attr) {
      uint32_t i;
      zend_attribute *attr;

      attr = zend_add_attribute(&func->common.attributes, old_attr->name, old_attr->argc, old_attr->flags, old_attr->offset, old_attr->lineno);

      for (i = 0 ; i < old_attr->argc; i++) {
        ZVAL_DUP(&attr->args[i].value, &old_attr->args[i].value);
      }
    } ZEND_HASH_FOREACH_END();
  }
}
/* }}} */

static void auto_global_copy_ctor(zval *zv) /* {{{ */
{
  zend_auto_global *old_ag = (zend_auto_global *) Z_PTR_P(zv);
  zend_auto_global *new_ag = pemalloc(sizeof(zend_auto_global), 1);

  new_ag->name = old_ag->name;
  new_ag->auto_global_callback = old_ag->auto_global_callback;
  new_ag->jit = old_ag->jit;

  Z_PTR_P(zv) = new_ag;
}
/* }}} */

static void compiler_globals_ctor(zend_compiler_globals *compiler_globals) /* {{{ */
{
  compiler_globals->compiled_filename = NULL;

  compiler_globals->function_table = (HashTable *) malloc(sizeof(HashTable));
  zend_hash_init(compiler_globals->function_table, 1024, NULL, ZEND_FUNCTION_DTOR, 1);
  zend_hash_copy(compiler_globals->function_table, global_function_table, function_copy_ctor);

  compiler_globals->class_table = (HashTable *) malloc(sizeof(HashTable));
  zend_hash_init(compiler_globals->class_table, 64, NULL, ZEND_CLASS_DTOR, 1);
  zend_hash_copy(compiler_globals->class_table, global_class_table, zend_class_add_ref);

  zend_set_default_compile_time_values();

  compiler_globals->auto_globals = (HashTable *) malloc(sizeof(HashTable));
  zend_hash_init(compiler_globals->auto_globals, 8, NULL, auto_global_dtor, 1);
  zend_hash_copy(compiler_globals->auto_globals, global_auto_globals_table, auto_global_copy_ctor);

  compiler_globals->script_encoding_list = NULL;
  compiler_globals->current_linking_class = NULL;

  /* Map region is going to be created and resized at run-time. */
  compiler_globals->map_ptr_real_base = NULL;
  compiler_globals->map_ptr_base = ZEND_MAP_PTR_BIASED_BASE(NULL);
  compiler_globals->map_ptr_size = 0;
  compiler_globals->map_ptr_last = global_map_ptr_last;
  if (compiler_globals->map_ptr_last) {
    /* Allocate map_ptr table */
    compiler_globals->map_ptr_size = ZEND_MM_ALIGNED_SIZE_EX(compiler_globals->map_ptr_last, 4096);
    void *base = pemalloc(compiler_globals->map_ptr_size * sizeof(void*), 1);
    compiler_globals->map_ptr_real_base = base;
    compiler_globals->map_ptr_base = ZEND_MAP_PTR_BIASED_BASE(base);
    memset(base, 0, compiler_globals->map_ptr_last * sizeof(void*));
  }
}
/* }}} */

static void compiler_globals_dtor(zend_compiler_globals *compiler_globals) /* {{{ */
{
  if (compiler_globals->function_table != GLOBAL_FUNCTION_TABLE) {
    zend_hash_destroy(compiler_globals->function_table);
    free(compiler_globals->function_table);
  }
  if (compiler_globals->class_table != GLOBAL_CLASS_TABLE) {
    /* Child classes may reuse structures from parent classes, so destroy in reverse order. */
    zend_hash_graceful_reverse_destroy(compiler_globals->class_table);
    free(compiler_globals->class_table);
  }
  if (compiler_globals->auto_globals != GLOBAL_AUTO_GLOBALS_TABLE) {
    zend_hash_destroy(compiler_globals->auto_globals);
    free(compiler_globals->auto_globals);
  }
  if (compiler_globals->script_encoding_list) {
    pefree((char*)compiler_globals->script_encoding_list, 1);
  }
  if (compiler_globals->map_ptr_real_base) {
    free(compiler_globals->map_ptr_real_base);
    compiler_globals->map_ptr_real_base = NULL;
    compiler_globals->map_ptr_base = ZEND_MAP_PTR_BIASED_BASE(NULL);
    compiler_globals->map_ptr_size = 0;
  }
}
/* }}} */

static void executor_globals_ctor(zend_executor_globals *executor_globals) /* {{{ */
{
  zend_startup_constants();
  zend_copy_constants(executor_globals->zend_constants, GLOBAL_CONSTANTS_TABLE);
  zend_init_rsrc_plist();
  zend_init_exception_op();
  zend_init_call_trampoline_op();
  memset(&executor_globals->trampoline, 0, sizeof(zend_op_array));
  executor_globals->capture_warnings_during_sccp = 0;
  ZVAL_UNDEF(&executor_globals->user_error_handler);
  ZVAL_UNDEF(&executor_globals->user_exception_handler);
  executor_globals->in_autoload = NULL;
  executor_globals->current_execute_data = NULL;
  executor_globals->current_module = NULL;
  executor_globals->exit_status = 0;
#if XPFPA_HAVE_CW
  executor_globals->saved_fpu_cw = 0;
#endif
  executor_globals->saved_fpu_cw_ptr = NULL;
  executor_globals->active = 0;
  executor_globals->bailout = NULL;
  executor_globals->error_handling  = EH_NORMAL;
  executor_globals->exception_class = NULL;
  executor_globals->exception = NULL;
  executor_globals->objects_store.object_buckets = NULL;
  executor_globals->current_fiber_context = NULL;
  executor_globals->main_fiber_context = NULL;
  executor_globals->active_fiber = NULL;
#ifdef ZEND_WIN32
  zend_get_windows_version_info(&executor_globals->windows_version_info);
#endif
  executor_globals->flags = EG_FLAGS_INITIAL;
  executor_globals->record_errors = false;
  executor_globals->num_errors = 0;
  executor_globals->errors = NULL;
}
/* }}} */

static void executor_globals_dtor(zend_executor_globals *executor_globals) /* {{{ */
{
  zend_ini_dtor(executor_globals->ini_directives);

  if (&executor_globals->persistent_list != global_persistent_list) {
    zend_destroy_rsrc_list(&executor_globals->persistent_list);
  }
  if (executor_globals->zend_constants != GLOBAL_CONSTANTS_TABLE) {
    zend_hash_destroy(executor_globals->zend_constants);
    free(executor_globals->zend_constants);
  }
}
/* }}} */

static void zend_new_thread_end_handler(THREAD_T thread_id) /* {{{ */
{
  zend_copy_ini_directives();
  zend_ini_refresh_caches(ZEND_INI_STAGE_STARTUP);
}
/* }}} */
#endif

#if defined(__FreeBSD__) || defined(__DragonFly__)
/* FreeBSD and DragonFly floating point precision fix */
#include <floatingpoint.h>
#endif

static void ini_scanner_globals_ctor(zend_ini_scanner_globals *scanner_globals_p) /* {{{ */
{
  memset(scanner_globals_p, 0, sizeof(*scanner_globals_p));
}
/* }}} */

static void php_scanner_globals_ctor(zend_php_scanner_globals *scanner_globals_p) /* {{{ */
{
  memset(scanner_globals_p, 0, sizeof(*scanner_globals_p));
}
/* }}} */

static void module_destructor_zval(zval *zv) /* {{{ */
{
  zend_module_entry *module = (zend_module_entry*)Z_PTR_P(zv);
  module_destructor(module);
}
/* }}} */

static bool php_auto_globals_create_globals(zend_string *name) /* {{{ */
{
  /* While we keep registering $GLOBALS as an auto-global, we do not create an
   * actual variable for it. Access to it handled specially by the compiler. */
  return 0;
}
/* }}} */

void zend_startup(zend_utility_functions *utility_functions) /* {{{ */
{
#ifdef ZTS
  zend_compiler_globals *compiler_globals;
  zend_executor_globals *executor_globals;
  extern ZEND_API ts_rsrc_id ini_scanner_globals_id;
  extern ZEND_API ts_rsrc_id language_scanner_globals_id;
#else
  extern zend_ini_scanner_globals ini_scanner_globals;
  extern zend_php_scanner_globals language_scanner_globals;
#endif

  zend_cpu_startup();

#ifdef ZEND_WIN32
  php_win32_cp_set_by_id(65001);
#endif

  start_memory_manager();

  virtual_cwd_startup(); /* Could use shutdown to free the main cwd but it would just slow it down for CGI */

#if defined(__FreeBSD__) || defined(__DragonFly__)
  /* FreeBSD and DragonFly floating point precision fix */
  fpsetmask(0);
#endif

  zend_startup_strtod();
  zend_startup_extensions_mechanism();

  /* Set up utility functions and values */
  zend_error_cb = utility_functions->error_function;
  zend_printf = utility_functions->printf_function;
  zend_write = utility_functions->write_function;
  zend_fopen = utility_functions->fopen_function;
  if (!zend_fopen) {
    zend_fopen = zend_fopen_wrapper;
  }
  zend_stream_open_function = utility_functions->stream_open_function;
  zend_message_dispatcher_p = utility_functions->message_handler;
  zend_get_configuration_directive_p = utility_functions->get_configuration_directive;
  zend_ticks_function = utility_functions->ticks_function;
  zend_on_timeout = utility_functions->on_timeout;
  zend_printf_to_smart_string = utility_functions->printf_to_smart_string_function;
  zend_printf_to_smart_str = utility_functions->printf_to_smart_str_function;
  zend_getenv = utility_functions->getenv_function;
  zend_resolve_path = utility_functions->resolve_path_function;

  zend_interrupt_function = NULL;

#ifdef HAVE_DTRACE
/* build with dtrace support */
  {
    char *tmp = getenv("USE_ZEND_DTRACE");

    if (tmp && ZEND_ATOL(tmp)) {
      zend_dtrace_enabled = 1;
      zend_compile_file = dtrace_compile_file;
      zend_execute_ex = dtrace_execute_ex;
      zend_execute_internal = dtrace_execute_internal;

      zend_observer_error_register(dtrace_error_notify_cb);
    } else {
      zend_compile_file = compile_file;
      zend_execute_ex = execute_ex;
      zend_execute_internal = NULL;
    }
  }
#else
  zend_compile_file = compile_file;
  zend_execute_ex = execute_ex;
  zend_execute_internal = NULL;
#endif /* HAVE_DTRACE */
  zend_compile_string = compile_string;
  zend_throw_exception_hook = NULL;

  /* Set up the default garbage collection implementation. */
  gc_collect_cycles = zend_gc_collect_cycles;

  zend_vm_init();

  /* set up version */
  zend_version_info = strdup(ZEND_CORE_VERSION_INFO);
  zend_version_info_length = sizeof(ZEND_CORE_VERSION_INFO) - 1;

  GLOBAL_FUNCTION_TABLE = (HashTable *) malloc(sizeof(HashTable));
  GLOBAL_CLASS_TABLE = (HashTable *) malloc(sizeof(HashTable));
  GLOBAL_AUTO_GLOBALS_TABLE = (HashTable *) malloc(sizeof(HashTable));
  GLOBAL_CONSTANTS_TABLE = (HashTable *) malloc(sizeof(HashTable));

  zend_hash_init(GLOBAL_FUNCTION_TABLE, 1024, NULL, ZEND_FUNCTION_DTOR, 1);
  zend_hash_init(GLOBAL_CLASS_TABLE, 64, NULL, ZEND_CLASS_DTOR, 1);
  zend_hash_init(GLOBAL_AUTO_GLOBALS_TABLE, 8, NULL, auto_global_dtor, 1);
  zend_hash_init(GLOBAL_CONSTANTS_TABLE, 128, NULL, ZEND_CONSTANT_DTOR, 1);

  zend_hash_init(&module_registry, 32, NULL, module_destructor_zval, 1);
  zend_init_rsrc_list_dtors();

#ifdef ZTS
  ts_allocate_fast_id(&compiler_globals_id, &compiler_globals_offset, sizeof(zend_compiler_globals), (ts_allocate_ctor) compiler_globals_ctor, (ts_allocate_dtor) compiler_globals_dtor);
  ts_allocate_fast_id(&executor_globals_id, &executor_globals_offset, sizeof(zend_executor_globals), (ts_allocate_ctor) executor_globals_ctor, (ts_allocate_dtor) executor_globals_dtor);
  ts_allocate_fast_id(&language_scanner_globals_id, &language_scanner_globals_offset, sizeof(zend_php_scanner_globals), (ts_allocate_ctor) php_scanner_globals_ctor, NULL);
  ts_allocate_fast_id(&ini_scanner_globals_id, &ini_scanner_globals_offset, sizeof(zend_ini_scanner_globals), (ts_allocate_ctor) ini_scanner_globals_ctor, NULL);
  compiler_globals = ts_resource(compiler_globals_id);
  executor_globals = ts_resource(executor_globals_id);

  compiler_globals_dtor(compiler_globals);
  compiler_globals->in_compilation = 0;
  compiler_globals->function_table = (HashTable *) malloc(sizeof(HashTable));
  compiler_globals->class_table = (HashTable *) malloc(sizeof(HashTable));

  *compiler_globals->function_table = *GLOBAL_FUNCTION_TABLE;
  *compiler_globals->class_table = *GLOBAL_CLASS_TABLE;
  compiler_globals->auto_globals = GLOBAL_AUTO_GLOBALS_TABLE;

  zend_hash_destroy(executor_globals->zend_constants);
  *executor_globals->zend_constants = *GLOBAL_CONSTANTS_TABLE;
#else
  ini_scanner_globals_ctor(&ini_scanner_globals);
  php_scanner_globals_ctor(&language_scanner_globals);
  zend_set_default_compile_time_values();
#ifdef ZEND_WIN32
  zend_get_windows_version_info(&EG(windows_version_info));
#endif
  /* Map region is going to be created and resized at run-time. */
  CG(map_ptr_real_base) = NULL;
  CG(map_ptr_base) = ZEND_MAP_PTR_BIASED_BASE(NULL);
  CG(map_ptr_size) = 0;
  CG(map_ptr_last) = 0;
#endif
  EG(error_reporting) = E_ALL & ~E_NOTICE;

  zend_interned_strings_init();
  zend_startup_builtin_functions();
  zend_register_standard_constants();
  zend_register_auto_global(zend_string_init_interned("GLOBALS", sizeof("GLOBALS") - 1, 1), 1, php_auto_globals_create_globals);

#ifndef ZTS
  zend_init_rsrc_plist();
  zend_init_exception_op();
  zend_init_call_trampoline_op();
#endif

  zend_ini_startup();

#ifdef ZEND_WIN32
  /* Uses INI settings, so needs to be run after it. */
  php_win32_cp_setup();
#endif

  zend_optimizer_startup();

#ifdef ZTS
  tsrm_set_new_thread_end_handler(zend_new_thread_end_handler);
  tsrm_set_shutdown_handler(zend_interned_strings_dtor);
#endif
}
/* }}} */

void zend_register_standard_ini_entries(void) /* {{{ */
{
  zend_register_ini_entries_ex(ini_entries, 0, MODULE_PERSISTENT);
}
/* }}} */


/* Unlink the global (r/o) copies of the class, function and constant tables,
 * and use a fresh r/w copy for the startup thread
 */
zend_result zend_post_startup(void) /* {{{ */
{
#ifdef ZTS
  zend_encoding **script_encoding_list;

  zend_compiler_globals *compiler_globals = ts_resource(compiler_globals_id);
  zend_executor_globals *executor_globals = ts_resource(executor_globals_id);
#endif

  startup_done = true;

  if (zend_post_startup_cb) {
    zend_result (*cb)(void) = zend_post_startup_cb;

    zend_post_startup_cb = NULL;
    if (cb() != SUCCESS) {
      return FAILURE;
    }
  }

#ifdef ZTS
  *GLOBAL_FUNCTION_TABLE = *compiler_globals->function_table;
  *GLOBAL_CLASS_TABLE = *compiler_globals->class_table;
  *GLOBAL_CONSTANTS_TABLE = *executor_globals->zend_constants;
  global_map_ptr_last = compiler_globals->map_ptr_last;

  short_tags_default = CG(short_tags);
  compiler_options_default = CG(compiler_options);

  zend_destroy_rsrc_list(&EG(persistent_list));
  free(compiler_globals->function_table);
  compiler_globals->function_table = NULL;
  free(compiler_globals->class_table);
  compiler_globals->class_table = NULL;
  if (compiler_globals->map_ptr_real_base) {
    free(compiler_globals->map_ptr_real_base);
  }
  compiler_globals->map_ptr_real_base = NULL;
  compiler_globals->map_ptr_base = ZEND_MAP_PTR_BIASED_BASE(NULL);
  if ((script_encoding_list = (zend_encoding **)compiler_globals->script_encoding_list)) {
    compiler_globals_ctor(compiler_globals);
    compiler_globals->script_encoding_list = (const zend_encoding **)script_encoding_list;
  } else {
    compiler_globals_ctor(compiler_globals);
  }
  free(EG(zend_constants));
  EG(zend_constants) = NULL;

  executor_globals_ctor(executor_globals);
  global_persistent_list = &EG(persistent_list);
  zend_copy_ini_directives();
#else
  global_map_ptr_last = CG(map_ptr_last);
#endif

  return SUCCESS;
}
/* }}} */

void zend_shutdown(void) /* {{{ */
{
  zend_vm_dtor();

  zend_destroy_rsrc_list(&EG(persistent_list));
  zend_destroy_modules();

  virtual_cwd_deactivate();
  virtual_cwd_shutdown();

  zend_hash_destroy(GLOBAL_FUNCTION_TABLE);
  /* Child classes may reuse structures from parent classes, so destroy in reverse order. */
  zend_hash_graceful_reverse_destroy(GLOBAL_CLASS_TABLE);

  zend_hash_destroy(GLOBAL_AUTO_GLOBALS_TABLE);
  free(GLOBAL_AUTO_GLOBALS_TABLE);

  zend_shutdown_extensions();
  free(zend_version_info);

  free(GLOBAL_FUNCTION_TABLE);
  free(GLOBAL_CLASS_TABLE);

  zend_hash_destroy(GLOBAL_CONSTANTS_TABLE);
  free(GLOBAL_CONSTANTS_TABLE);
  zend_shutdown_strtod();
  zend_attributes_shutdown();

#ifdef ZTS
  GLOBAL_FUNCTION_TABLE = NULL;
  GLOBAL_CLASS_TABLE = NULL;
  GLOBAL_AUTO_GLOBALS_TABLE = NULL;
  GLOBAL_CONSTANTS_TABLE = NULL;
  ts_free_id(executor_globals_id);
  ts_free_id(compiler_globals_id);
#else
  if (CG(map_ptr_real_base)) {
    free(CG(map_ptr_real_base));
    CG(map_ptr_real_base) = NULL;
    CG(map_ptr_base) = ZEND_MAP_PTR_BIASED_BASE(NULL);
    CG(map_ptr_size) = 0;
  }
  if (CG(script_encoding_list)) {
    free(ZEND_VOIDP(CG(script_encoding_list)));
    CG(script_encoding_list) = NULL;
    CG(script_encoding_list_size) = 0;
  }
#endif
  zend_destroy_rsrc_list_dtors();

  zend_optimizer_shutdown();
  startup_done = false;
}
/* }}} */

void zend_set_utility_values(zend_utility_values *utility_values) /* {{{ */
{
  zend_uv = *utility_values;
}
/* }}} */

/* this should be compatible with the standard zenderror */
ZEND_COLD void zenderror(const char *error) /* {{{ */
{
  CG(parse_error) = 0;

  if (EG(exception)) {
    /* An exception was thrown in the lexer, don't throw another in the parser. */
    return;
  }

  zend_throw_exception(zend_ce_parse_error, error, 0);
}
/* }}} */

ZEND_API ZEND_COLD ZEND_NORETURN void _zend_bailout(const char *filename, uint32_t lineno) /* {{{ */
{

  if (!EG(bailout)) {
    zend_output_debug_string(1, "%s(%d) : Bailed out without a bailout address!", filename, lineno);
    exit(-1);
  }
  gc_protect(1);
  CG(unclean_shutdown) = 1;
  CG(active_class_entry) = NULL;
  CG(in_compilation) = 0;
  EG(current_execute_data) = NULL;
  LONGJMP(*EG(bailout), FAILURE);
}
/* }}} */

ZEND_API size_t zend_get_page_size(void)
{
#ifdef _WIN32
  SYSTEM_INFO system_info;
  GetSystemInfo(&system_info);
  return system_info.dwPageSize;
#elif defined(__FreeBSD__)
  /* This returns the value obtained from
   * the auxv vector, avoiding a syscall. */
  return getpagesize();
#else
  return (size_t) sysconf(_SC_PAGESIZE);
#endif
}

ZEND_API void zend_append_version_info(const zend_extension *extension) /* {{{ */
{
  char *new_info;
  uint32_t new_info_length;

  new_info_length = (uint32_t)(sizeof("    with  v, , by \n")
            + strlen(extension->name)
            + strlen(extension->version)
            + strlen(extension->copyright)
            + strlen(extension->author));

  new_info = (char *) malloc(new_info_length + 1);

  snprintf(new_info, new_info_length, "    with %s v%s, %s, by %s\n", extension->name, extension->version, extension->copyright, extension->author);

  zend_version_info = (char *) realloc(zend_version_info, zend_version_info_length+new_info_length + 1);
  strncat(zend_version_info, new_info, new_info_length);
  zend_version_info_length += new_info_length;
  free(new_info);
}
/* }}} */

ZEND_API const char *get_zend_version(void) /* {{{ */
{
  return zend_version_info;
}
/* }}} */

ZEND_API void zend_activate(void) /* {{{ */
{
#ifdef ZTS
  virtual_cwd_activate();
#endif
  gc_reset();
  init_compiler();
  init_executor();
  startup_scanner();
  if (CG(map_ptr_last)) {
    memset(CG(map_ptr_real_base), 0, CG(map_ptr_last) * sizeof(void*));
  }
  zend_observer_activate();
}
/* }}} */

void zend_call_destructors(void) /* {{{ */
{
  zend_try {
    shutdown_destructors();
  } zend_end_try();
}
/* }}} */

ZEND_API void zend_deactivate(void) /* {{{ */
{
  /* we're no longer executing anything */
  EG(current_execute_data) = NULL;

  zend_try {
    shutdown_scanner();
  } zend_end_try();

  /* shutdown_executor() takes care of its own bailout handling */
  shutdown_executor();

  zend_try {
    zend_ini_deactivate();
  } zend_end_try();

  zend_try {
    shutdown_compiler();
  } zend_end_try();

  zend_destroy_rsrc_list(&EG(regular_list));

#if GC_BENCH
  fprintf(stderr, "GC Statistics\n");
  fprintf(stderr, "-------------\n");
  fprintf(stderr, "Runs:               %d\n", GC_G(gc_runs));
  fprintf(stderr, "Collected:          %d\n", GC_G(collected));
  fprintf(stderr, "Root buffer length: %d\n", GC_G(root_buf_length));
  fprintf(stderr, "Root buffer peak:   %d\n\n", GC_G(root_buf_peak));
  fprintf(stderr, "      Possible            Remove from  Marked\n");
  fprintf(stderr, "        Root    Buffered     buffer     grey\n");
  fprintf(stderr, "      --------  --------  -----------  ------\n");
  fprintf(stderr, "ZVAL  %8d  %8d  %9d  %8d\n", GC_G(zval_possible_root), GC_G(zval_buffered), GC_G(zval_remove_from_buffer), GC_G(zval_marked_grey));
#endif
}
/* }}} */

ZEND_API void zend_message_dispatcher(zend_long message, const void *data) /* {{{ */
{
  if (zend_message_dispatcher_p) {
    zend_message_dispatcher_p(message, data);
  }
}
/* }}} */

ZEND_API zval *zend_get_configuration_directive(zend_string *name) /* {{{ */
{
  if (zend_get_configuration_directive_p) {
    return zend_get_configuration_directive_p(name);
  } else {
    return NULL;
  }
}
/* }}} */

#define SAVE_STACK(stack) do { \
    if (CG(stack).top) { \
      memcpy(&stack, &CG(stack), sizeof(zend_stack)); \
      CG(stack).top = CG(stack).max = 0; \
      CG(stack).elements = NULL; \
    } else { \
      stack.top = 0; \
    } \
  } while (0)

#define RESTORE_STACK(stack) do { \
    if (stack.top) { \
      zend_stack_destroy(&CG(stack)); \
      memcpy(&CG(stack), &stack, sizeof(zend_stack)); \
    } \
  } while (0)

ZEND_API ZEND_COLD void zend_error_zstr_at(
    int orig_type, zend_string *error_filename, uint32_t error_lineno, zend_string *message)
{
  zval params[4];
  zval retval;
  zval orig_user_error_handler;
  bool in_compilation;
  zend_class_entry *saved_class_entry;
  zend_stack loop_var_stack;
  zend_stack delayed_oplines_stack;
  int type = orig_type & E_ALL;
  bool orig_record_errors;
  uint32_t orig_num_errors;
  zend_error_info **orig_errors;
  zend_result res;

  /* If we're executing a function during SCCP, count any warnings that may be emitted,
   * but don't perform any other error handling. */
  if (EG(capture_warnings_during_sccp)) {
    ZEND_ASSERT(!(type & E_FATAL_ERRORS) && "Fatal error during SCCP");
    EG(capture_warnings_during_sccp)++;
    return;
  }

  if (EG(record_errors)) {
    zend_error_info *info = emalloc(sizeof(zend_error_info));
    info->type = type;
    info->lineno = error_lineno;
    info->filename = zend_string_copy(error_filename);
    info->message = zend_string_copy(message);

    /* This is very inefficient for a large number of errors.
     * Use pow2 realloc if it becomes a problem. */
    EG(num_errors)++;
    EG(errors) = erealloc(EG(errors), sizeof(zend_error_info*) * EG(num_errors));
    EG(errors)[EG(num_errors)-1] = info;
  }

  /* Report about uncaught exception in case of fatal errors */
  if (EG(exception)) {
    zend_execute_data *ex;
    const zend_op *opline;

    if (type & E_FATAL_ERRORS) {
      ex = EG(current_execute_data);
      opline = NULL;
      while (ex && (!ex->func || !ZEND_USER_CODE(ex->func->type))) {
        ex = ex->prev_execute_data;
      }
      if (ex && ex->opline->opcode == ZEND_HANDLE_EXCEPTION &&
          EG(opline_before_exception)) {
        opline = EG(opline_before_exception);
      }
      zend_exception_error(EG(exception), E_WARNING);
      EG(exception) = NULL;
      if (opline) {
        ex->opline = opline;
      }
    }
  }

  zend_observer_error_notify(type, error_filename, error_lineno, message);

  /* if we don't have a user defined error handler */
  if (Z_TYPE(EG(user_error_handler)) == IS_UNDEF
    || !(EG(user_error_handler_error_reporting) & type)
    || EG(error_handling) != EH_NORMAL) {
    zend_error_cb(orig_type, error_filename, error_lineno, message);
  } else switch (type) {
    case E_ERROR:
    case E_PARSE:
    case E_CORE_ERROR:
    case E_CORE_WARNING:
    case E_COMPILE_ERROR:
    case E_COMPILE_WARNING:
      /* The error may not be safe to handle in user-space */
      zend_error_cb(orig_type, error_filename, error_lineno, message);
      break;
    default:
      /* Handle the error in user space */
      ZVAL_STR_COPY(&params[1], message);
      ZVAL_LONG(&params[0], type);

      if (error_filename) {
        ZVAL_STR_COPY(&params[2], error_filename);
      } else {
        ZVAL_NULL(&params[2]);
      }

      ZVAL_LONG(&params[3], error_lineno);

      ZVAL_COPY_VALUE(&orig_user_error_handler, &EG(user_error_handler));
      ZVAL_UNDEF(&EG(user_error_handler));

      /* User error handler may include() additional PHP files.
       * If an error was generated during compilation PHP will compile
       * such scripts recursively, but some CG() variables may be
       * inconsistent. */

      in_compilation = CG(in_compilation);
      if (in_compilation) {
        saved_class_entry = CG(active_class_entry);
        CG(active_class_entry) = NULL;
        SAVE_STACK(loop_var_stack);
        SAVE_STACK(delayed_oplines_stack);
        CG(in_compilation) = 0;
      }

      orig_record_errors = EG(record_errors);
      orig_num_errors = EG(num_errors);
      orig_errors = EG(errors);
      EG(record_errors) = false;
      EG(num_errors) = 0;
      EG(errors) = NULL;

      res = call_user_function(CG(function_table), NULL, &orig_user_error_handler, &retval, 4, params);

      EG(record_errors) = orig_record_errors;
      EG(num_errors) = orig_num_errors;
      EG(errors) = orig_errors;

      if (res == SUCCESS) {
        if (Z_TYPE(retval) != IS_UNDEF) {
          if (Z_TYPE(retval) == IS_FALSE) {
            zend_error_cb(orig_type, error_filename, error_lineno, message);
          }
          zval_ptr_dtor(&retval);
        }
      } else if (!EG(exception)) {
        /* The user error handler failed, use built-in error handler */
        zend_error_cb(orig_type, error_filename, error_lineno, message);
      }

      if (in_compilation) {
        CG(active_class_entry) = saved_class_entry;
        RESTORE_STACK(loop_var_stack);
        RESTORE_STACK(delayed_oplines_stack);
        CG(in_compilation) = 1;
      }

      zval_ptr_dtor(&params[2]);
      zval_ptr_dtor(&params[1]);

      if (Z_TYPE(EG(user_error_handler)) == IS_UNDEF) {
        ZVAL_COPY_VALUE(&EG(user_error_handler), &orig_user_error_handler);
      } else {
        zval_ptr_dtor(&orig_user_error_handler);
      }
      break;
  }

  if (type == E_PARSE) {
    /* eval() errors do not affect exit_status */
    if (!(EG(current_execute_data) &&
      EG(current_execute_data)->func &&
      ZEND_USER_CODE(EG(current_execute_data)->func->type) &&
      EG(current_execute_data)->opline->opcode == ZEND_INCLUDE_OR_EVAL &&
      EG(current_execute_data)->opline->extended_value == ZEND_EVAL)) {
      EG(exit_status) = 255;
    }
  }
}
/* }}} */

static ZEND_COLD void zend_error_va_list(
    int orig_type, zend_string *error_filename, uint32_t error_lineno,
    const char *format, va_list args)
{
  zend_string *message = zend_vstrpprintf(0, format, args);
  zend_error_zstr_at(orig_type, error_filename, error_lineno, message);
  zend_string_release(message);
}

static ZEND_COLD void get_filename_lineno(int type, zend_string **filename, uint32_t *lineno) {
  /* Obtain relevant filename and lineno */
  switch (type) {
    case E_CORE_ERROR:
    case E_CORE_WARNING:
      *filename = NULL;
      *lineno = 0;
      break;
    case E_PARSE:
    case E_COMPILE_ERROR:
    case E_COMPILE_WARNING:
    case E_ERROR:
    case E_NOTICE:
    case E_STRICT:
    case E_DEPRECATED:
    case E_WARNING:
    case E_USER_ERROR:
    case E_USER_WARNING:
    case E_USER_NOTICE:
    case E_USER_DEPRECATED:
    case E_RECOVERABLE_ERROR:
      if (zend_is_compiling()) {
        *filename = zend_get_compiled_filename();
        *lineno = zend_get_compiled_lineno();
      } else if (zend_is_executing()) {
        *filename = zend_get_executed_filename_ex();
        *lineno = zend_get_executed_lineno();
      } else {
        *filename = NULL;
        *lineno = 0;
      }
      break;
    default:
      *filename = NULL;
      *lineno = 0;
      break;
  }
  if (!*filename) {
    *filename = ZSTR_KNOWN(ZEND_STR_UNKNOWN_CAPITALIZED);
  }
}

ZEND_API ZEND_COLD void zend_error_at(
    int type, zend_string *filename, uint32_t lineno, const char *format, ...) {
  va_list args;

  if (!filename) {
    uint32_t dummy_lineno;
    get_filename_lineno(type, &filename, &dummy_lineno);
  }

  va_start(args, format);
  zend_error_va_list(type, filename, lineno, format, args);
  va_end(args);
}

ZEND_API ZEND_COLD void zend_error(int type, const char *format, ...) {
  zend_string *filename;
  uint32_t lineno;
  va_list args;

  get_filename_lineno(type, &filename, &lineno);
  va_start(args, format);
  zend_error_va_list(type, filename, lineno, format, args);
  va_end(args);
}

ZEND_API ZEND_COLD void zend_error_unchecked(int type, const char *format, ...) {
  zend_string *filename;
  uint32_t lineno;
  va_list args;

  get_filename_lineno(type, &filename, &lineno);
  va_start(args, format);
  zend_error_va_list(type, filename, lineno, format, args);
  va_end(args);
}

ZEND_API ZEND_COLD ZEND_NORETURN void zend_error_at_noreturn(
    int type, zend_string *filename, uint32_t lineno, const char *format, ...)
{
  va_list args;

  if (!filename) {
    uint32_t dummy_lineno;
    get_filename_lineno(type, &filename, &dummy_lineno);
  }

  va_start(args, format);
  zend_error_va_list(type, filename, lineno, format, args);
  va_end(args);
  /* Should never reach this. */
  abort();
}

ZEND_API ZEND_COLD ZEND_NORETURN void zend_error_noreturn(int type, const char *format, ...)
{
  zend_string *filename;
  uint32_t lineno;
  va_list args;

  get_filename_lineno(type, &filename, &lineno);
  va_start(args, format);
  zend_error_va_list(type, filename, lineno, format, args);
  va_end(args);
  /* Should never reach this. */
  abort();
}

ZEND_API ZEND_COLD void zend_error_zstr(int type, zend_string *message) {
  zend_string *filename;
  uint32_t lineno;
  get_filename_lineno(type, &filename, &lineno);
  zend_error_zstr_at(type, filename, lineno, message);
}

ZEND_API void zend_begin_record_errors(void)
{
  ZEND_ASSERT(!EG(record_errors) && "Error recording already enabled");
  EG(record_errors) = true;
  EG(num_errors) = 0;
  EG(errors) = NULL;
}

ZEND_API void zend_free_recorded_errors(void)
{
  if (!EG(num_errors)) {
    return;
  }

  for (uint32_t i = 0; i < EG(num_errors); i++) {
    zend_error_info *info = EG(errors)[i];
    zend_string_release(info->filename);
    zend_string_release(info->message);
    efree(info);
  }
  efree(EG(errors));
  EG(errors) = NULL;
  EG(num_errors) = 0;
}

ZEND_API ZEND_COLD void zend_throw_error(zend_class_entry *exception_ce, const char *format, ...) /* {{{ */
{
  va_list va;
  char *message = NULL;

  if (!exception_ce) {
    exception_ce = zend_ce_error;
  }

  /* Marker used to disable exception generation during preloading. */
  if (EG(exception) == (void*)(uintptr_t)-1) {
    return;
  }

  va_start(va, format);
  zend_vspprintf(&message, 0, format, va);

  //TODO: we can't convert compile-time errors to exceptions yet???
  if (EG(current_execute_data) && !CG(in_compilation)) {
    zend_throw_exception(exception_ce, message, 0);
  } else {
    zend_error(E_ERROR, "%s", message);
  }

  efree(message);
  va_end(va);
}
/* }}} */

ZEND_API ZEND_COLD void zend_type_error(const char *format, ...) /* {{{ */
{
  va_list va;
  char *message = NULL;

  va_start(va, format);
  zend_vspprintf(&message, 0, format, va);
  zend_throw_exception(zend_ce_type_error, message, 0);
  efree(message);
  va_end(va);
} /* }}} */

ZEND_API ZEND_COLD void zend_argument_count_error(const char *format, ...) /* {{{ */
{
  va_list va;
  char *message = NULL;

  va_start(va, format);
  zend_vspprintf(&message, 0, format, va);
  zend_throw_exception(zend_ce_argument_count_error, message, 0);
  efree(message);

  va_end(va);
} /* }}} */

ZEND_API ZEND_COLD void zend_value_error(const char *format, ...) /* {{{ */
{
  va_list va;
  char *message = NULL;

  va_start(va, format);
  zend_vspprintf(&message, 0, format, va);
  zend_throw_exception(zend_ce_value_error, message, 0);
  efree(message);
  va_end(va);
} /* }}} */

ZEND_API ZEND_COLD void zend_output_debug_string(bool trigger_break, const char *format, ...) /* {{{ */
{
#if ZEND_DEBUG
  va_list args;

  va_start(args, format);
# ifdef ZEND_WIN32
  {
    char output_buf[1024];

    vsnprintf(output_buf, 1024, format, args);
    OutputDebugString(output_buf);
    OutputDebugString("\n");
    if (trigger_break && IsDebuggerPresent()) {
      DebugBreak();
    }
  }
# else
  vfprintf(stderr, format, args);
  fprintf(stderr, "\n");
# endif
  va_end(args);
#endif
}
/* }}} */

ZEND_API ZEND_COLD void zend_user_exception_handler(void) /* {{{ */
{
  zval orig_user_exception_handler;
  zval params[1], retval2;
  zend_object *old_exception;

  if (zend_is_unwind_exit(EG(exception))) {
    return;
  }

  old_exception = EG(exception);
  EG(exception) = NULL;
  ZVAL_OBJ(&params[0], old_exception);
  ZVAL_COPY_VALUE(&orig_user_exception_handler, &EG(user_exception_handler));

  if (call_user_function(CG(function_table), NULL, &orig_user_exception_handler, &retval2, 1, params) == SUCCESS) {
    zval_ptr_dtor(&retval2);
    if (EG(exception)) {
      OBJ_RELEASE(EG(exception));
      EG(exception) = NULL;
    }
    OBJ_RELEASE(old_exception);
  } else {
    EG(exception) = old_exception;
  }
} /* }}} */

ZEND_API zend_result zend_execute_scripts(int type, zval *retval, int file_count, ...) /* {{{ */
{
  va_list files;
  int i;
  zend_file_handle *file_handle;
  zend_op_array *op_array;
  zend_result ret = SUCCESS;

  va_start(files, file_count);
  for (i = 0; i < file_count; i++) {
    file_handle = va_arg(files, zend_file_handle *);
    if (!file_handle) {
      continue;
    }

    if (ret == FAILURE) {
      continue;
    }

    op_array = zend_compile_file(file_handle, type);
    if (file_handle->opened_path) {
      zend_hash_add_empty_element(&EG(included_files), file_handle->opened_path);
    }
    if (op_array) {
      zend_execute(op_array, retval);
      zend_exception_restore();
      if (UNEXPECTED(EG(exception))) {
        if (Z_TYPE(EG(user_exception_handler)) != IS_UNDEF) {
          zend_user_exception_handler();
        }
        if (EG(exception)) {
          ret = zend_exception_error(EG(exception), E_ERROR);
        }
      }
      zend_destroy_static_vars(op_array);
      destroy_op_array(op_array);
      efree_size(op_array, sizeof(zend_op_array));
    } else if (type==ZEND_REQUIRE) {
      ret = FAILURE;
    }
  }
  va_end(files);

  return ret;
}
/* }}} */

#define COMPILED_STRING_DESCRIPTION_FORMAT "%s(%d) : %s"

ZEND_API char *zend_make_compiled_string_description(const char *name) /* {{{ */
{
  const char *cur_filename;
  int cur_lineno;
  char *compiled_string_description;

  if (zend_is_compiling()) {
    cur_filename = ZSTR_VAL(zend_get_compiled_filename());
    cur_lineno = zend_get_compiled_lineno();
  } else if (zend_is_executing()) {
    cur_filename = zend_get_executed_filename();
    cur_lineno = zend_get_executed_lineno();
  } else {
    cur_filename = "Unknown";
    cur_lineno = 0;
  }

  zend_spprintf(&compiled_string_description, 0, COMPILED_STRING_DESCRIPTION_FORMAT, cur_filename, cur_lineno, name);
  return compiled_string_description;
}
/* }}} */

void free_estring(char **str_p) /* {{{ */
{
  efree(*str_p);
}
/* }}} */

ZEND_API void zend_map_ptr_reset(void)
{
  CG(map_ptr_last) = global_map_ptr_last;
}

ZEND_API void *zend_map_ptr_new(void)
{
  void **ptr;

  if (CG(map_ptr_last) >= CG(map_ptr_size)) {
    /* Grow map_ptr table */
    CG(map_ptr_size) = ZEND_MM_ALIGNED_SIZE_EX(CG(map_ptr_last) + 1, 4096);
    CG(map_ptr_real_base) = perealloc(CG(map_ptr_real_base), CG(map_ptr_size) * sizeof(void*), 1);
    CG(map_ptr_base) = ZEND_MAP_PTR_BIASED_BASE(CG(map_ptr_real_base));
  }
  ptr = (void**)CG(map_ptr_real_base) + CG(map_ptr_last);
  *ptr = NULL;
  CG(map_ptr_last)++;
  return ZEND_MAP_PTR_PTR2OFFSET(ptr);
}

ZEND_API void zend_map_ptr_extend(size_t last)
{
  if (last > CG(map_ptr_last)) {
    void **ptr;

    if (last >= CG(map_ptr_size)) {
      /* Grow map_ptr table */
      CG(map_ptr_size) = ZEND_MM_ALIGNED_SIZE_EX(last, 4096);
      CG(map_ptr_real_base) = perealloc(CG(map_ptr_real_base), CG(map_ptr_size) * sizeof(void*), 1);
      CG(map_ptr_base) = ZEND_MAP_PTR_BIASED_BASE(CG(map_ptr_real_base));
    }
    ptr = (void**)CG(map_ptr_real_base) + CG(map_ptr_last);
    memset(ptr, 0, (last - CG(map_ptr_last)) * sizeof(void*));
    CG(map_ptr_last) = last;
  }
}

ZEND_API void zend_alloc_ce_cache(zend_string *type_name)
{
  if (ZSTR_HAS_CE_CACHE(type_name) || !ZSTR_IS_INTERNED(type_name)) {
    return;
  }

  if ((GC_FLAGS(type_name) & IS_STR_PERMANENT) && startup_done) {
    /* Don't allocate slot on permanent interned string outside module startup.
     * The cache slot would no longer be valid on the next request. */
    return;
  }

  if (zend_string_equals_literal_ci(type_name, "self")
      || zend_string_equals_literal_ci(type_name, "parent")) {
    return;
  }

  /* We use the refcount to keep map_ptr of corresponding type */
  uint32_t ret;
  do {
    ret = ZEND_MAP_PTR_NEW_OFFSET();
  } while (ret <= 2);
  GC_ADD_FLAGS(type_name, IS_STR_CLASS_NAME_MAP_PTR);
  GC_SET_REFCOUNT(type_name, ret);
}

Coverage Report

Created: 2023-12-13 20:06