High level conclusions

Fuzzers reach 50.48% of cyclomatic complexity.

Fuzzers reach 55.87% of all functions.

Reachability and coverage overview

Functions statically reachable by fuzzers

994 / 1779

Cyclomatic complexity statically reachable by fuzzers

7378 / 14614

Runtime code coverage of functions

731 / 1779

The following table shows data about each function in the project. The functions included in this table correspond to all functions that exist in the executables of the fuzzers. As such, there may be functions that are from third-party libraries.

For further technical details on the meaning of columns in the below table, please see the Glossary .

Func name	Functions filename	Args	Function call depth	Reached by Fuzzers	Runtime reached by Fuzzers	Combined reached by Fuzzers	Fuzzers runtime hit	Func lines hit %	I Count	BB Count	Cyclomatic complexity	Functions reached	Reached by functions	Accumulated cyclomatic complexity	Undiscovered complexity

Fuzzer: fuzz_regexp

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	217	36.5%
gold	[1:9]	4	0.67%
yellow	[10:29]	7	1.18%
greenyellow	[30:49]	1	0.16%
lawngreen	50+	364	61.3%
All colors	593	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
6	209	7 : View List ['re_emit_char', 'lre_realloc', 'rqsort', 're_emit_op_u32', 'get_u32', 're_parse_out_of_memory', 'put_u32']	6	283	re_emit_string_list	call site: 00384	/src/quickjs/libregexp.c:1223
0	18	1 : View List ['re_emit_op_u32']	0	18	re_emit_char	call site: 00402	/src/quickjs/libregexp.c:1210
0	4	1 : View List ['re_parse_error']	0	4	get_class_atom	call site: 00326	/src/quickjs/libregexp.c:1126
0	4	1 : View List ['re_parse_error']	0	4	re_emit_range	call site: 00385	/src/quickjs/libregexp.c:1171
0	2	1 : View List ['is_digit']	0	2	lre_parse_escape	call site: 00077	/src/quickjs/libregexp.c:764
0	0	None	1270	3660	re_parse_nested_class	call site: 00134	/src/quickjs/libregexp.c:1330
0	0	None	1270	3652	re_parse_nested_class	call site: 00139	/src/quickjs/libregexp.c:1388
0	0	None	21	28	rqsort	call site: 00307	/src/quickjs/cutils.c:538
0	0	None	6	1919	re_parse_disjunction	call site: 00026	/src/quickjs/libregexp.c:2359
0	0	None	6	1301	re_parse_term	call site: 00125	/src/quickjs/libregexp.c:1823
0	0	None	6	1281	re_parse_term	call site: 00416	/src/quickjs/libregexp.c:2089
0	0	None	6	722	re_parse_term	call site: 00125	/src/quickjs/libregexp.c:2024

Runtime coverage analysis

Covered functions

100

Functions that are reachable but not covered

33

Reachable functions

131

Percentage of reachable functions covered

74.81%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
fuzz/fuzz_regexp.c	4
libregexp.c	55
cutils.c	13
./cutils.h	13
./libunicode.h	7
libunicode.c	31

Fuzzer: fuzz_compile

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	4262	76.0%
gold	[1:9]	958	17.0%
yellow	[10:29]	102	1.81%
greenyellow	[30:49]	8	0.14%
lawngreen	50+	275	4.90%
All colors	5605	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
62586	154281	22 : View List ['optional_chain_test', 'emit_u32', 'emit_source_pos', 'js_parse_expr', 'get_u16', 'emit_class_field_init', 'emit_op', 'next_token', 'emit_goto', 'JS_AtomToValue', 'js_parse_expect', 'js_parse_template', 'js_parse_error', 'token_is_ident', 'emit_label', 'emit_atom', 'emit_u16', 'has_with_scope', 'get_u32', 'emit_push_const', 'JS_FreeValue.22', 'js_parse_assign_expr']	62608	154339	js_parse_postfix_expr	call site: 00000	/src/quickjs/quickjs.c:25717
62586	154281	22 : View List ['optional_chain_test', 'emit_u32', 'emit_source_pos', 'js_parse_expr', 'get_u16', 'emit_class_field_init', 'emit_op', 'next_token', 'emit_goto', 'JS_AtomToValue', 'js_parse_expect', 'js_parse_template', 'js_parse_error', 'token_is_ident', 'emit_label', 'emit_atom', 'emit_u16', 'has_with_scope', 'get_u32', 'emit_push_const', 'JS_FreeValue.22', 'js_parse_assign_expr']	62608	154339	js_parse_postfix_expr	call site: 00000	/src/quickjs/quickjs.c:26053
22495	31503	15 : View List ['__JS_AtomToUInt32', 'convert_fast_array_to_array', 'JS_NumberIsInteger', 'JS_AtomIsNumericIndex1', '__JS_NewFloat64', 'check_define_prop_flags', 'JS_IsUndefined', 'JS_ToArrayLengthFree', 'JS_CreateProperty', 'JS_IsException.30', 'get_prop_flags', 'JS_SetPropertyValue', 'JS_AutoInitProperty', '__JS_AtomIsTaggedInt', 'JS_NumberIsNegativeOrMinusZero']	54464	91162	JS_DefineProperty	call site: 00445	/src/quickjs/quickjs.c:9565
9050	9092	4 : View List ['dbuf_put_u16', 'get_closure_var', 'optimize_scope_make_ref', 'can_opt_put_ref_value']	9087	9552	resolve_scope_var	call site: 00000	/src/quickjs/quickjs.c:31882
9000	26988	9 : View List ['get_hi_surrogate', 'string_buffer_write8', 'string_buffer_end', 'unicode_from_utf8', 'string_buffer_init', 'get_lo_surrogate', 'string_buffer_putc8', 'string_buffer_free', 'string_buffer_putc16']	9000	26988	JS_NewStringLen	call site: 00389	/src/quickjs/quickjs.c:3830
8990	8990	2 : View List ['js_closure', 'JS_CallFree']	8990	8990	JS_EvalFunctionInternal	call site: 01693	/src/quickjs/quickjs.c:35705
6560	11073	2 : View List ['js_parse_error', 'js_parse_function_decl']	6560	11095	js_parse_statement_or_decl	call site: 00000	/src/quickjs/quickjs.c:28184
6560	6560	1 : View List ['js_parse_function_decl']	6560	6560	js_parse_source_element	call site: 00000	/src/quickjs/quickjs.c:30668
4796	9294	2 : View List ['add_req_module_entry', 'js_parse_with_clause']	4796	23375	js_parse_import	call site: 00000	/src/quickjs/quickjs.c:30539
4796	4796	1 : View List ['js_parse_with_clause']	4796	4796	js_parse_from_clause	call site: 00000	/src/quickjs/quickjs.c:30322
4753	4753	1 : View List ['js_std_dump_error']	4753	9573	test_one_input_init	call site: 05069	/src/quickjs/fuzz/fuzz_common.c:50
4515	4515	1 : View List ['js_parse_error_reserved_identifier']	4530	107380	js_parse_import	call site: 00000	/src/quickjs/quickjs.c:30556

Runtime coverage analysis

Covered functions

501

Functions that are reachable but not covered

626

Reachable functions

1022

Percentage of reachable functions covered

38.75%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
fuzz/fuzz_compile.c	1
quickjs.c	760
./list.h	6
./cutils.h	28
./quickjs.h	23
dtoa.c	37
cutils.c	17
./libunicode.h	9
libunicode.c	32
libregexp.c	48
fuzz/fuzz_common.c	3
quickjs-libc.c	32
/usr/include/x86_64-linux-gnu/bits/stdio.h	1

Fuzzer: fuzz_eval

Call tree

The calltree shows the control flow of the fuzzer. This is overlaid with coverage information to display how much of the potential code a fuzzer can reach is in fact covered at runtime. In the following there is a link to a detailed calltree visualisation as well as a bitmap showing a high-level view of the calltree. For further information about these topics please see the glossary for full calltree and calltree overview

Call tree overview bitmap:

The distribution of callsites in terms of coloring is

Color	Runtime hitcount	Callsite count	Percentage
red	0	3567	69.1%
gold	[1:9]	372	7.21%
yellow	[10:29]	538	10.4%
greenyellow	[30:49]	163	3.15%
lawngreen	50+	519	10.0%
All colors	5159	100

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity	Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
49961	86667	25 : View List ['__JS_AtomToUInt32', 'js_shape_prepare_update', 'JS_AtomIsNumericIndex1', 'JS_DupValue', 'js_update_property_flags', 'set_value', 'JS_ThrowTypeErrorOrFalse', 'check_define_prop_flags', 'JS_IsUndefined', 'get_shape_prop', '__JS_AtomIsTaggedInt', 'JS_AutoInitProperty', 'JS_IsFunction', 'convert_fast_array_to_array', 'JS_NumberIsInteger', '__JS_NewFloat64', 'js_same_value', 'JS_ToArrayLengthFree', 'JS_IsException.30', 'free_var_ref', 'JS_FreeValue.22', 'get_prop_flags', 'set_array_length', 'JS_SetPropertyValue', 'JS_NumberIsNegativeOrMinusZero']	49961	91162	JS_DefineProperty	call site: 00445	/src/quickjs/quickjs.c:9732
27270	154281	22 : View List ['optional_chain_test', 'emit_u32', 'emit_source_pos', 'js_parse_expr', 'get_u16', 'emit_class_field_init', 'emit_op', 'next_token', 'emit_goto', 'JS_AtomToValue', 'js_parse_expect', 'js_parse_template', 'js_parse_error', 'token_is_ident', 'emit_label', 'emit_atom', 'emit_u16', 'has_with_scope', 'get_u32', 'emit_push_const', 'JS_FreeValue.22', 'js_parse_assign_expr']	27292	154339	js_parse_postfix_expr	call site: 00000	/src/quickjs/quickjs.c:26053
17992	31503	15 : View List ['__JS_AtomToUInt32', 'convert_fast_array_to_array', 'JS_NumberIsInteger', 'JS_AtomIsNumericIndex1', '__JS_NewFloat64', 'check_define_prop_flags', 'JS_IsUndefined', 'JS_ToArrayLengthFree', 'JS_CreateProperty', 'JS_IsException.30', 'get_prop_flags', 'JS_SetPropertyValue', 'JS_AutoInitProperty', '__JS_AtomIsTaggedInt', 'JS_NumberIsNegativeOrMinusZero']	49961	91162	JS_DefineProperty	call site: 00445	/src/quickjs/quickjs.c:9565
9050	9092	4 : View List ['dbuf_put_u16', 'get_closure_var', 'optimize_scope_make_ref', 'can_opt_put_ref_value']	9050	9552	resolve_scope_var	call site: 00000	/src/quickjs/quickjs.c:31882
8990	8994	4 : View List ['JS_ConcatString2', 'JS_DupValue', 'JS_IsException.30', 'JS_FreeValue.22']	8990	22479	JS_ConcatString	call site: 02460	/src/quickjs/quickjs.c:4520
6560	97556	18 : View List ['close_scopes', 'push_scope', 'js_parse_expr', 'push_break_entry', 'dbuf_put', 'dbuf_realloc', 'emit_op', 'js_parse_var', 'js_parse_statement', 'next_token', 'emit_goto', 'js_parse_expect', 'pop_break_entry', 'emit_label', 'js_parse_expr2', 'new_label', 'is_let', 'pop_scope']	6560	97578	js_parse_statement_or_decl	call site: 00000	/src/quickjs/quickjs.c:27736
6560	11073	2 : View List ['js_parse_error', 'js_parse_function_decl']	6560	11095	js_parse_statement_or_decl	call site: 00000	/src/quickjs/quickjs.c:28184
6560	6560	1 : View List ['js_parse_object_literal']	33852	160899	js_parse_postfix_expr	call site: 00000	/src/quickjs/quickjs.c:25590
6560	6560	1 : View List ['js_parse_function_decl']	6560	6560	js_parse_source_element	call site: 00000	/src/quickjs/quickjs.c:30668
4796	9294	2 : View List ['add_req_module_entry', 'js_parse_with_clause']	4796	23375	js_parse_import	call site: 00000	/src/quickjs/quickjs.c:30539
4796	4796	1 : View List ['js_parse_with_clause']	4796	4796	js_parse_from_clause	call site: 00000	/src/quickjs/quickjs.c:30322
4753	4753	1 : View List ['js_std_dump_error']	4753	9573	test_one_input_init	call site: 05069	/src/quickjs/fuzz/fuzz_common.c:50

Runtime coverage analysis

Covered functions

670

Functions that are reachable but not covered

459

Reachable functions

958

Percentage of reachable functions covered

52.09%

NB: The sum of covered functions and functions that are reachable but not covered need not be equal to Reachable functions . This is because the reachability analysis is an approximation and thus at runtime some functions may be covered that are not included in the reachability analysis. This is a limitation of our static analysis capabilities.

Function name	source code lines	source lines hit	percentage hit

Files reached

filename	functions hit
fuzz/fuzz_eval.c	1
quickjs.c	697
./list.h	6
./cutils.h	27
./quickjs.h	23
dtoa.c	37
cutils.c	17
./libunicode.h	9
libunicode.c	32
libregexp.c	48
fuzz/fuzz_common.c	3
quickjs-libc.c	32
/usr/include/x86_64-linux-gnu/bits/stdio.h	1

Optimal target analysis

Remaining optimal interesting functions

The following table shows a list of functions that are optimal targets. Optimal targets are identified by finding the functions that in combination, yield a high code coverage.

Func name	Functions filename	Arg count	Args	Function depth	hitcount	instr count	bb count	cyclomatic complexity	Reachable functions	Incoming references	total cyclomatic complexity	Unreached complexity
__JS_EvalInternal	/src/quickjs/quickjs.c	8	['N/A', 'size_t', 'size_t', 'N/A', 'size_t', 'N/A', 'int', 'int']	96	0	385	58	20	812	0	7286	2664
js_json_stringify	/src/quickjs/quickjs.c	5	['N/A', 'size_t', 'size_t', 'int', 'N/A']	74	0	25	3	2	642	0	4783	273
js_regexp_Symbol_replace	/src/quickjs/quickjs.c	5	['N/A', 'size_t', 'size_t', 'int', 'N/A']	67	0	1027	126	51	647	0	5018	207
js_string_normalize	/src/quickjs/quickjs.c	5	['N/A', 'size_t', 'size_t', 'int', 'N/A']	66	0	190	31	13	630	0	4643	127
js_os_exec	/src/quickjs/quickjs-libc.c	5	['N/A', 'size_t', 'size_t', 'int', 'N/A']	69	0	875	161	60	629	0	4612	110
js_typed_array_indexOf	/src/quickjs/quickjs.c	6	['N/A', 'size_t', 'size_t', 'int', 'N/A', 'int']	52	0	1046	221	91	619	0	4616	108
JS_ComputeMemoryUsage	/src/quickjs/quickjs.c	2	['N/A', 'N/A']	3	0	1109	153	50	6	0	73	67
js_std_file_printf	/src/quickjs/quickjs-libc.c	5	['N/A', 'size_t', 'size_t', 'int', 'N/A']	71	0	35	6	3	622	0	4569	66
js_array_toSorted	/src/quickjs/quickjs.c	5	['N/A', 'size_t', 'size_t', 'int', 'N/A']	71	0	313	43	17	619	0	4580	63
js_object_groupBy	/src/quickjs/quickjs.c	6	['N/A', 'size_t', 'size_t', 'int', 'N/A', 'int']	67	0	435	50	21	629	0	4642	59

Implementing fuzzers that target the above functions will improve reachability such that it becomes:

Functions statically reachable by fuzzers

1256 / 1779

Cyclomatic complexity statically reachable by fuzzers

11098 / 14614

All functions overview

If you implement fuzzers for these functions, the status of all functions in the project will be:

Func name	Functions filename	Args	Function call depth	Reached by Fuzzers	Runtime reached by Fuzzers	Combined reached by Fuzzers	Fuzzers runtime hit	Func lines hit %	I Count	BB Count	Cyclomatic complexity	Functions reached	Reached by functions	Accumulated cyclomatic complexity	Undiscovered complexity

This sections provides heuristics that can be used as input to a fuzz engine when running a given fuzz target. The current focus is on providing input that is usable by libFuzzer.

fuzz/fuzz_regexp.c

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['unicode_case1', 'cr_op', 're_string_list_free', 'lre_canonicalize', 're_parse_nested_class', 'cr_op1', 're_emit_char', 'cr_regexp_canonicalize', 'get_class_atom', 're_emit_range']

fuzz/fuzz_compile.c

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['JS_CallInternal', 'lre_js_is_ident_next', 'js_std_add_helpers', 'JS_ThrowReferenceErrorNotDefined', 'JS_AddIntrinsicDate', 'JS_ReadModule', 'js_async_function_call', 'string_buffer_putc']

fuzz/fuzz_eval.c

Dictionary

Use this with the libFuzzer -dict=DICT.file flag

Fuzzer function priority

Use one of these functions as input to libfuzzer with flag: -focus_function name

-focus_function=['re_string_list_free', 'JS_CallInternal', 'JS_ConcatString3', 'js_std_add_helpers', 'JS_AddIntrinsicDate', 'js_binary_arith_slow', 'string_buffer_concat_value_free', 'JS_AddIntrinsicTypedArrays', 'round_to_d', 'ident_realloc']

This section shows analysis of runtime coverage data.

For futher technical details on how this section is generated, please see the Glossary .

Complex functions with low coverage

Func name	Function total lines	Lines covered at runtime	percentage covered	Reached by fuzzers
exchange_func	33	14	42.42%	['fuzz_regexp', 'fuzz_compile', 'fuzz_eval']
re_string_list_op	42	12	28.57%	['fuzz_regexp', 'fuzz_compile', 'fuzz_eval']
re_emit_string_list	64	9	14.06%	['fuzz_regexp', 'fuzz_compile', 'fuzz_eval']
js_os_poll	98	14	14.28%	['fuzz_compile', 'fuzz_eval']
JS_ExecutePendingJob	31	10	32.25%	['fuzz_compile', 'fuzz_eval']
JS_GetPropertyInternal	138	62	44.92%	['fuzz_compile', 'fuzz_eval']
JS_SetPropertyInternal	250	46	18.4%	['fuzz_compile', 'fuzz_eval']
JS_DefineProperty	236	35	14.83%	['fuzz_compile', 'fuzz_eval']
is_num_string	31	13	41.93%	['fuzz_compile', 'fuzz_eval']
JS_GetOwnPropertyNamesInternal	180	75	41.66%	['fuzz_compile', 'fuzz_eval']
JS_GetOwnPropertyInternal	70	18	25.71%	['fuzz_compile', 'fuzz_eval']
JS_ToStringInternal	54	20	37.03%	['fuzz_compile', 'fuzz_eval']
JS_CallInternal	2471	460	18.61%	['fuzz_compile', 'fuzz_eval']
simple_next_token	81	34	41.97%	['fuzz_compile', 'fuzz_eval']
js_host_resolve_imported_module	39	17	43.58%	['fuzz_compile', 'fuzz_eval']
js_default_module_normalize_name	46	8	17.39%	['fuzz_compile', 'fuzz_eval']
js_inner_module_linking	130	70	53.84%	['fuzz_compile', 'fuzz_eval']
JS_WriteObjectRec	134	25	18.65%	['fuzz_compile']
JS_WriteModule	44	17	38.63%	['fuzz_compile']
JS_ReadObjectRec	107	27	25.23%	['fuzz_compile']
JS_ReadModule	103	25	24.27%	['fuzz_compile']
js_string_define_own_property	32	11	34.37%	['fuzz_compile', 'fuzz_eval']
js_promise_resolve_function_call	41	19	46.34%	['fuzz_compile', 'fuzz_eval']
fulfill_or_reject_promise	33	15	45.45%	['fuzz_compile', 'fuzz_eval']
js_async_function_resume	45	20	44.44%	['fuzz_compile', 'fuzz_eval']
push_scope	32	13	40.62%	['fuzz_compile', 'fuzz_eval']
next_token	417	186	44.60%	['fuzz_compile', 'fuzz_eval']
js_parse_string	120	60	50.0%	['fuzz_compile', 'fuzz_eval']
js_parse_directives	77	22	28.57%	['fuzz_compile', 'fuzz_eval']
js_parse_postfix_expr	579	187	32.29%	['fuzz_compile', 'fuzz_eval']
js_parse_assign_expr2	233	33	14.16%	['fuzz_compile', 'fuzz_eval']
js_parse_logical_and_or	35	12	34.28%	['fuzz_compile', 'fuzz_eval']
js_parse_expr_binary	161	85	52.79%	['fuzz_compile', 'fuzz_eval']
js_parse_unary	129	45	34.88%	['fuzz_compile', 'fuzz_eval']
get_lvalue	109	49	44.95%	['fuzz_compile', 'fuzz_eval']
put_lvalue	97	34	35.05%	['fuzz_compile', 'fuzz_eval']
js_parse_import	125	29	23.20%	['fuzz_compile', 'fuzz_eval']
js_parse_statement_or_decl	626	84	13.41%	['fuzz_compile', 'fuzz_eval']
emit_return	68	17	25.0%	['fuzz_compile', 'fuzz_eval']
resolve_variables	312	128	41.02%	['fuzz_compile', 'fuzz_eval']
resolve_scope_var	382	113	29.58%	['fuzz_compile', 'fuzz_eval']
skip_dead_code	38	20	52.63%	['fuzz_compile', 'fuzz_eval']
instantiate_hoisted_definitions	112	28	25.0%	['fuzz_compile', 'fuzz_eval']
resolve_labels	773	267	34.54%	['fuzz_compile', 'fuzz_eval']
ss_check	33	17	51.51%	['fuzz_compile', 'fuzz_eval']
JS_GetPropertyValue	66	26	39.39%	['fuzz_compile', 'fuzz_eval']
JS_ToBoolFree	59	25	42.37%	['fuzz_compile', 'fuzz_eval']
JS_ToPrimitiveFree	69	34	49.27%	['fuzz_compile', 'fuzz_eval']
JS_ToInt64SatFree	38	13	34.21%	['fuzz_compile', 'fuzz_eval']
JS_ConcatString	72	13	18.05%	['fuzz_compile', 'fuzz_eval']
js_call_c_function	112	51	45.53%	['fuzz_eval']
js_closure	42	17	40.47%	['fuzz_compile', 'fuzz_eval']
js_closure2	32	11	34.37%	['fuzz_compile', 'fuzz_eval']
js_for_in_next	80	27	33.75%	['fuzz_compile', 'fuzz_eval']
js_for_in_prepare_prototype_chain_enum	52	23	44.23%	['fuzz_compile', 'fuzz_eval']
JS_GetIterator	31	12	38.70%	['fuzz_compile', 'fuzz_eval']
JS_IteratorNext2	31	17	54.83%	['fuzz_compile', 'fuzz_eval']
js_add_slow	103	22	21.35%	['fuzz_compile', 'fuzz_eval']
js_binary_arith_slow	178	36	20.22%	['fuzz_compile', 'fuzz_eval']
js_unary_arith_slow	134	27	20.14%	['fuzz_compile', 'fuzz_eval']
js_binary_logic_slow	153	29	18.95%	['fuzz_compile', 'fuzz_eval']
JS_CallConstructorInternal	40	15	37.5%	['fuzz_compile', 'fuzz_eval']
JS_ToObject	46	16	34.78%	['fuzz_compile', 'fuzz_eval']
js_compile_regexp	69	37	53.62%	['fuzz_compile', 'fuzz_eval']
js_regexp_exec	185	57	30.81%	['fuzz_eval']
js_regexp_constructor	73	25	34.24%	['fuzz_compile', 'fuzz_eval']
define_var	112	43	38.39%	['fuzz_eval']
js_parse_skip_parens_token	104	54	51.92%	['fuzz_eval']
js_parse_regexp	100	46	46.0%	['fuzz_eval']
js_parse_array_literal	84	22	26.19%	['fuzz_eval']
js_define_var	34	16	47.05%	['fuzz_eval']
optimize_scope_make_global_ref	51	27	52.94%	['fuzz_eval']
put_short_code	56	26	46.42%	['fuzz_eval']
js_array_join	50	27	54.0%	['fuzz_eval']

This section shows which files and directories are considered in this report. The main reason for showing this is fuzz introspector may include more code in the reasoning than is desired. This section helps identify if too many files/directories are included, e.g. third party code, which may be irrelevant for the threat model. In the event too much is included, fuzz introspector supports a configuration file that can exclude data from the report. See the following link for more information on how to create a config file: link

Files in report

Source file	Reached by	Covered by
	[]	[]
/src/quickjs/libregexp.c	['fuzz_regexp', 'fuzz_compile', 'fuzz_eval']	['fuzz_regexp', 'fuzz_compile', 'fuzz_eval']
/usr/include/stdlib.h	[]	[]
/src/quickjs/./cutils.h	['fuzz_regexp', 'fuzz_compile', 'fuzz_eval']	[]
/src/quickjs/libunicode.c	['fuzz_regexp', 'fuzz_compile', 'fuzz_eval']	['fuzz_regexp', 'fuzz_eval']
/src/quickjs/./quickjs.h	['fuzz_compile', 'fuzz_eval']	[]
/src/quickjs/fuzz/fuzz_compile.c	['fuzz_compile']	['fuzz_compile']
/src/quickjs/./libunicode.h	['fuzz_regexp', 'fuzz_compile', 'fuzz_eval']	[]
/src/quickjs/quickjs.c	['fuzz_compile', 'fuzz_eval']	['fuzz_compile', 'fuzz_eval']
/src/quickjs/cutils.c	['fuzz_regexp', 'fuzz_compile', 'fuzz_eval']	['fuzz_regexp', 'fuzz_compile', 'fuzz_eval']
/usr/include/x86_64-linux-gnu/sys/stat.h	[]	[]
/src/quickjs/fuzz/fuzz_regexp.c	['fuzz_regexp']	['fuzz_regexp']
/src/quickjs/fuzz/fuzz_common.c	['fuzz_compile', 'fuzz_eval']	['fuzz_compile', 'fuzz_eval']
/src/quickjs/quickjs-libc.c	['fuzz_compile', 'fuzz_eval']	['fuzz_compile', 'fuzz_eval']
/src/quickjs/./list.h	['fuzz_compile', 'fuzz_eval']	[]
/usr/include/x86_64-linux-gnu/bits/stdio.h	['fuzz_compile', 'fuzz_eval']	[]
/src/quickjs/dtoa.c	['fuzz_compile', 'fuzz_eval']	['fuzz_compile', 'fuzz_eval']
/src/quickjs/fuzz/fuzz_eval.c	['fuzz_eval']	['fuzz_eval']

Directories in report

Directory
/src/quickjs/./
/usr/include/
/src/quickjs/
/usr/include/x86_64-linux-gnu/bits/
/usr/include/x86_64-linux-gnu/sys/
/src/quickjs/fuzz/