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
2	2	1 : View List ['ones_to_twos_complement1']	2	2	dta_interpret_int8_bytes	call site: 00185	/src/readstat/src/stata/readstat_dta_read.c:483
2	2	1 : View List ['ones_to_twos_complement2']	2	2	dta_interpret_int16_bytes	call site: 00188	/src/readstat/src/stata/readstat_dta_read.c:506
2	2	1 : View List ['ones_to_twos_complement4']	2	2	dta_interpret_int32_bytes	call site: 00191	/src/readstat/src/stata/readstat_dta_read.c:529
0	7	1 : View List ['readstat_parser_free']	0	7	readstat_parser_init	call site: 00005	/src/readstat/src/readstat_parser.c:9
0	0	None	6	86	dta_handle_value_labels	call site: 00201	/src/readstat/src/stata/readstat_dta_read.c:998
0	0	None	4	78	dta_handle_row	call site: 00177	/src/readstat/src/stata/readstat_dta_read.c:604
0	0	None	2	26	dta_ctx_init	call site: 00077	/src/readstat/src/stata/readstat_dta.c:159
0	0	None	0	568	readstat_parse_dta	call site: 00093	/src/readstat/src/stata/readstat_dta_read.c:1194
0	0	None	0	568	readstat_parse_dta	call site: 00093	/src/readstat/src/stata/readstat_dta_read.c:1202
0	0	None	0	140	dta_read_data	call site: 00170	/src/readstat/src/stata/readstat_dta_read.c:704
0	0	None	0	34	dta_handle_variables	call site: 00127	/src/readstat/src/stata/readstat_dta_read.c:934
0	0	None	0	34	dta_handle_variables	call site: 00129	/src/readstat/src/stata/readstat_dta_read.c:969

Fuzzer calltree


         LLVMFuzzerTestOneInput

[function] [call site] 00000


           fuzzer_parser_init

[function] [call site] 00001


             readstat_parser_init

[function] [call site] 00002


               calloc

[call site] 00003


               calloc

[call site] 00004


               unistd_io_init

[function] [call site] 00005


                 readstat_set_open_handler

[function] [call site] 00006


                 unistd_open_handler

[function] [call site] 00007


                   open_with_unicode

[function] [call site] 00008


                     open

[call site] 00009


                 readstat_set_close_handler

[function] [call site] 00010


                 unistd_close_handler

[function] [call site] 00011


                   close

[call site] 00012


                 readstat_set_seek_handler

[function] [call site] 00013


                 unistd_seek_handler

[function] [call site] 00014


                   lseek

[call site] 00015


                 readstat_set_read_handler

[function] [call site] 00016


                 unistd_read_handler

[function] [call site] 00017


                   read

[call site] 00018


                 readstat_set_update_handler

[function] [call site] 00019


                 unistd_update_handler

[function] [call site] 00020


                   lseek

[call site] 00021


                 calloc

[call site] 00022


                 readstat_set_io_ctx

[function] [call site] 00023


               readstat_parser_free

[function] [call site] 00024


                 readstat_set_io_ctx

[function] [call site] 00025


             readstat_set_open_handler

[function] [call site] 00026


             rt_open_handler

[function] [call site] 00027


             readstat_set_close_handler

[function] [call site] 00028


             rt_close_handler

[function] [call site] 00029


             readstat_set_seek_handler

[function] [call site] 00030


             rt_seek_handler

[function] [call site] 00031


             readstat_set_read_handler

[function] [call site] 00032


             rt_read_handler

[function] [call site] 00033


             readstat_set_update_handler

[function] [call site] 00034


             rt_update_handler

[function] [call site] 00035


             readstat_set_metadata_handler

[function] [call site] 00036


             handle_metadata

[function] [call site] 00037


             readstat_set_note_handler

[function] [call site] 00038


             handle_note

[function] [call site] 00039


             readstat_set_variable_handler

[function] [call site] 00040


             handle_variable

[function] [call site] 00041


             readstat_set_fweight_handler

[function] [call site] 00042


             handle_fweight

[function] [call site] 00043


             readstat_set_value_handler

[function] [call site] 00044


             handle_value

[function] [call site] 00045


             readstat_set_value_label_handler

[function] [call site] 00046


             handle_value_label

[function] [call site] 00047


           readstat_set_io_ctx

[function] [call site] 00048


           readstat_parse_dta

[function] [call site] 00049


             dta_ctx_alloc

[function] [call site] 00050


               calloc

[call site] 00051


             snprintf

[call site] 00052


             snprintf

[call site] 00053


             strncmp

[call site] 00054


             dta_read_xmlish_header

[function] [call site] 00055


               dta_read_tag

[function] [call site] 00056


                 strlen

[call site] 00057


                 strncmp

[call site] 00058


               dta_read_tag

[function] [call site] 00059


               dta_read_chunk

[function] [call site] 00060


                 dta_read_tag

[function] [call site] 00061


                 dta_read_tag

[function] [call site] 00062


               dta_read_chunk

[function] [call site] 00063


               strncmp

[call site] 00064


               strncmp

[call site] 00065


               machine_is_little_endian

[function] [call site] 00066


               dta_read_chunk

[function] [call site] 00067


               byteswap4

[function] [call site] 00068


               dta_read_chunk

[function] [call site] 00069


               byteswap2

[function] [call site] 00070


               dta_read_chunk

[function] [call site] 00071


               byteswap8

[function] [call site] 00072


               dta_read_chunk

[function] [call site] 00073


               byteswap4

[function] [call site] 00074


             dta_ctx_init

[function] [call site] 00075


               machine_is_little_endian

[function] [call site] 00076


               readstat_calloc

[function] [call site] 00077


                 calloc

[call site] 00078


               iconv_open

[call site] 00079


               iconv_open

[call site] 00080


               strcmp

[call site] 00081


               iconv_open

[call site] 00082


               readstat_malloc

[function] [call site] 00083


               readstat_malloc

[function] [call site] 00084


               readstat_malloc

[function] [call site] 00085


               readstat_malloc

[function] [call site] 00086


               readstat_malloc

[function] [call site] 00087


               readstat_malloc

[function] [call site] 00088


             dta_read_header

[function] [call site] 00089


               machine_is_little_endian

[function] [call site] 00090


               byteswap2

[function] [call site] 00091


               byteswap4

[function] [call site] 00092


             dta_ctx_init

[function] [call site] 00093


             dta_update_progress

[function] [call site] 00094


             dta_read_label_and_timestamp

[function] [call site] 00095


               dta_read_tag

[function] [call site] 00096


               byteswap2

[function] [call site] 00097


               readstat_malloc

[function] [call site] 00098


               strlen

[call site] 00099


               readstat_malloc

[function] [call site] 00100


               readstat_convert

[function] [call site] 00101


                 __errno_location

[call site] 00102


                 __errno_location

[call site] 00103


               dta_read_tag

[function] [call site] 00104


               dta_read_tag

[function] [call site] 00105


               readstat_malloc

[function] [call site] 00106


               dta_parse_timestamp

[function] [call site] 00107


                 snprintf

[call site] 00108


               mktime

[call site] 00109


               dta_read_tag

[function] [call site] 00110


             dta_read_tag

[function] [call site] 00111


             dta_read_map

[function] [call site] 00112


               dta_read_chunk

[function] [call site] 00113


               byteswap8

[function] [call site] 00114


               byteswap8

[function] [call site] 00115


               byteswap8

[function] [call site] 00116


             dta_read_descriptors

[function] [call site] 00117


               readstat_malloc

[function] [call site] 00118


               dta_read_chunk

[function] [call site] 00119


               byteswap2

[function] [call site] 00120


               dta_read_chunk

[function] [call site] 00121


               dta_read_chunk

[function] [call site] 00122


               dta_read_chunk

[function] [call site] 00123


               dta_read_chunk

[function] [call site] 00124


               dta_read_chunk

[function] [call site] 00125


             dta_type_info

[function] [call site] 00126


             dta_handle_variables

[function] [call site] 00127


               dta_type_info

[function] [call site] 00128


               dta_init_variable

[function] [call site] 00129


                 calloc

[call site] 00130


                 strnlen

[call site] 00131


                 readstat_convert

[function] [call site] 00132


                 strnlen

[call site] 00133


                 readstat_convert

[function] [call site] 00134


                 strnlen

[call site] 00135


                 readstat_convert

[function] [call site] 00136


                 __isoc99_sscanf

[call site] 00137


                 __isoc99_sscanf

[call site] 00138


             dta_read_expansion_fields

[function] [call site] 00139


               snprintf

[call site] 00140


               dta_read_tag

[function] [call site] 00141


               memcmp

[call site] 00142


               dta_read_tag

[function] [call site] 00143


               memcmp

[call site] 00144


               byteswap2

[function] [call site] 00145


               byteswap4

[function] [call site] 00146


               readstat_realloc

[function] [call site] 00147


                 realloc

[call site] 00148


               strncmp

[call site] 00149


               __isoc99_sscanf

[call site] 00150


               dta_read_tag

[function] [call site] 00151


             dta_read_strls

[function] [call site] 00152


               snprintf

[call site] 00153


               dta_read_tag

[function] [call site] 00154


               readstat_malloc

[function] [call site] 00155


               memcmp

[call site] 00156


               dta_read_strl

[function] [call site] 00157


                 dta_118_read_strl

[function] [call site] 00158


                   byteswap4

[function] [call site] 00159


                   byteswap8

[function] [call site] 00160


                   byteswap4

[function] [call site] 00161


                 dta_117_read_strl

[function] [call site] 00162


                   byteswap4

[function] [call site] 00163


                   byteswap4

[function] [call site] 00164


                   byteswap4

[function] [call site] 00165


               readstat_realloc

[function] [call site] 00166


               readstat_malloc

[function] [call site] 00167


               memcmp

[call site] 00168


               dta_read_tag

[function] [call site] 00169


             dta_read_data

[function] [call site] 00170


               snprintf

[call site] 00171


               dta_read_tag

[function] [call site] 00172


               dta_update_progress

[function] [call site] 00173


               dta_handle_rows

[function] [call site] 00174


                 readstat_malloc

[function] [call site] 00175


                 dta_handle_row

[function] [call site] 00176


                   dta_type_info

[function] [call site] 00177


                   strnlen

[call site] 00178


                   readstat_convert

[function] [call site] 00179


                   dta_interpret_strl_vo_bytes

[function] [call site] 00180


                     byteswap4

[function] [call site] 00181


                     byteswap4

[function] [call site] 00182


                   bsearch

[call site] 00183


                   dta_compare_strls

[function] [call site] 00184


                   dta_interpret_int8_bytes

[function] [call site] 00185


                     ones_to_twos_complement1

[function] [call site] 00186


                   dta_interpret_int16_bytes

[function] [call site] 00187


                     byteswap2

[function] [call site] 00188


                     ones_to_twos_complement2

[function] [call site] 00189


                   dta_interpret_int32_bytes

[function] [call site] 00190


                     byteswap4

[function] [call site] 00191


                     ones_to_twos_complement4

[function] [call site] 00192


                   dta_interpret_float_bytes

[function] [call site] 00193


                     byteswap4

[function] [call site] 00194


                   dta_interpret_double_bytes

[function] [call site] 00195


                     byteswap8

[function] [call site] 00196


                 dta_update_progress

[function] [call site] 00197


               dta_read_tag

[function] [call site] 00198


             dta_handle_value_labels

[function] [call site] 00199


               snprintf

[call site] 00200


               dta_read_tag

[function] [call site] 00201


               byteswap2

[function] [call site] 00202


               dta_read_tag

[function] [call site] 00203


               byteswap4

[function] [call site] 00204


               readstat_realloc

[function] [call site] 00205


               strnlen

[call site] 00206


               readstat_convert

[function] [call site] 00207


               dta_read_tag

[function] [call site] 00208


               byteswap4

[function] [call site] 00209


               byteswap4

[function] [call site] 00210


               realloc

[call site] 00211


               byteswap4

[function] [call site] 00212


               dta_interpret_int32_bytes

[function] [call site] 00213


               strnlen

[call site] 00214


               readstat_convert

[function] [call site] 00215


             dta_ctx_free

[function] [call site] 00216


               iconv_close

[call site] 00217


           readstat_parser_free

[function] [call site] 00218