Fuzz introspector: libidn2_register_fuzzer
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues

Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked Calltree index Parent function Callsite Largest blocked function
53 59 mem_cd_iconveh_internal call site: 00059 utf8conv_carefully
12 230 property call site: 00230 get_idna_map
8 154 u32_to_u8 call site: 00154 u8_uctomb
7 128 mem_iconveha_notranslit call site: 00128 mem_iconveha_notranslit
6 213 u32_normalize call site: 00213 rpl_free
5 10 c_strcasecmp call site: 00010 u8_check
5 32 iconveh_open call site: 00032 iconv_open
5 180 _idn2_u8_to_u32_nfc call site: 00180 u32_normalize
5 277 _idn2_bidi call site: 00277 get_idna_map
4 115 iconveh_close call site: 00115 __errno_location
4 136 mem_iconveha call site: 00136 mem_iconveha_notranslit
4 197 u32_normalize call site: 00197 __errno_location

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 __assert_fail [call site] 00001
1 idn2_register_ul [function] [call site] 00002
2 locale_charset [function] [call site] 00003
3 nl_langinfo [call site] 00004
2 u8_strconv_from_encoding [function] [call site] 00005
3 strlen [call site] 00006
3 u8_conv_from_encoding [function] [call site] 00007
4 c_strcasecmp [function] [call site] 00008
5 c_tolower [function] [call site] 00009
5 c_tolower [function] [call site] 00010
4 u8_check [function] [call site] 00011
4 __errno_location [call site] 00012
4 u8_mblen [function] [call site] 00013
4 abort [call site] 00014
4 __errno_location [call site] 00015
4 mem_iconveha [function] [call site] 00016
5 strlen [call site] 00017
5 mmalloca [function] [call site] 00018
5 __errno_location [call site] 00019
5 mem_iconveha_notranslit [function] [call site] 00020
6 mem_iconveh [function] [call site] 00021
7 c_strcasecmp [function] [call site] 00022
7 __errno_location [call site] 00023
7 iconveh_open [function] [call site] 00024
8 iconv_open [call site] 00025
8 c_strcasecmp [function] [call site] 00026
8 iconv_open [call site] 00027
8 __errno_location [call site] 00028
8 iconv_close [call site] 00029
8 __errno_location [call site] 00030
8 c_strcasecmp [function] [call site] 00031
8 c_strcasecmp [function] [call site] 00032
8 iconv_open [call site] 00033
8 __errno_location [call site] 00034
8 iconv_close [call site] 00035
8 iconv_close [call site] 00036
8 __errno_location [call site] 00037
7 mem_cd_iconveh [function] [call site] 00038
8 mem_cd_iconveh_internal [function] [call site] 00039
9 iconv [call site] 00040
9 iconv_carefully_1 [function] [call site] 00041
10 iconv [call site] 00042
10 __errno_location [call site] 00043
9 iconv [call site] 00044
9 __errno_location [call site] 00045
9 __errno_location [call site] 00046
9 __errno_location [call site] 00047
9 abort [call site] 00048
9 realloc [call site] 00049
9 rpl_free [function] [call site] 00050
10 __errno_location [call site] 00051
10 __errno_location [call site] 00052
9 __errno_location [call site] 00053
9 abort [call site] 00054
9 rpl_free [function] [call site] 00055
9 realloc [call site] 00056
9 rpl_free [function] [call site] 00057
9 __errno_location [call site] 00058
9 iconv [call site] 00059
9 __errno_location [call site] 00060
9 realloc [call site] 00061
9 rpl_free [function] [call site] 00062
9 __errno_location [call site] 00063
9 rpl_free [function] [call site] 00064
9 iconv [call site] 00065
9 iconv [call site] 00066
9 iconv_carefully_1 [function] [call site] 00067
9 iconv [call site] 00068
9 utf8conv_carefully [function] [call site] 00069
10 u8_mbtoucr [function] [call site] 00070
10 __errno_location [call site] 00071
10 u8_mbtouc [function] [call site] 00072
10 __errno_location [call site] 00073
10 u8_uctomb [function] [call site] 00074
10 __errno_location [call site] 00075
10 __errno_location [call site] 00076
9 iconv [call site] 00077
9 __errno_location [call site] 00078
9 rpl_free [function] [call site] 00079
9 __errno_location [call site] 00080
9 abort [call site] 00081
9 __errno_location [call site] 00082
9 iconv [call site] 00083
9 utf8conv_carefully [function] [call site] 00084
9 iconv [call site] 00085
9 __errno_location [call site] 00086
9 __errno_location [call site] 00087
9 __errno_location [call site] 00088
9 u8_prev [function] [call site] 00089
9 abort [call site] 00090
9 abort [call site] 00091
9 u8_mbtouc_unsafe [function] [call site] 00092
9 iconv [call site] 00093
9 __errno_location [call site] 00094
9 iconv [call site] 00095
9 __errno_location [call site] 00096
9 __errno_location [call site] 00097
9 abort [call site] 00098
9 realloc [call site] 00099
9 rpl_free [function] [call site] 00100
9 __errno_location [call site] 00101
9 iconv [call site] 00102
9 abort [call site] 00103
9 rpl_free [function] [call site] 00104
9 rpl_free [function] [call site] 00105
9 realloc [call site] 00106
9 rpl_free [function] [call site] 00107
9 __errno_location [call site] 00108
9 rpl_free [function] [call site] 00109
9 __errno_location [call site] 00110
9 __errno_location [call site] 00111
9 realloc [call site] 00112
7 __errno_location [call site] 00113
7 iconveh_close [function] [call site] 00114
8 iconv_close [call site] 00115
8 __errno_location [call site] 00116
8 iconv_close [call site] 00117
8 iconv_close [call site] 00118
8 __errno_location [call site] 00119
8 iconv_close [call site] 00120
8 __errno_location [call site] 00121
8 iconv_close [call site] 00122
8 __errno_location [call site] 00123
8 iconv_close [call site] 00124
7 __errno_location [call site] 00125
7 iconveh_close [function] [call site] 00126
7 rpl_free [function] [call site] 00127
6 __errno_location [call site] 00128
6 streq [function] [call site] 00129
7 strcmp [call site] 00130
6 mem_iconveha_notranslit [function] [call site] 00131
7 __errno_location [call site] 00132
7 mem_iconveha_notranslit [function] [call site] 00133
8 __errno_location [call site] 00134
8 __errno_location [call site] 00135
5 freea [function] [call site] 00136
6 abort [call site] 00137
6 rpl_free [function] [call site] 00138
5 mem_iconveha_notranslit [function] [call site] 00139
4 __errno_location [call site] 00140
3 u8_strlen [function] [call site] 00141
4 strlen [call site] 00142
3 rpl_free [function] [call site] 00143
3 __errno_location [call site] 00144
2 __errno_location [call site] 00145
2 idn2_register_u8 [function] [call site] 00146
3 strlen [call site] 00147
3 _idn2_ascii_p [function] [call site] 00148
3 idn2_punycode_decode [function] [call site] 00149
4 decode_digit [function] [call site] 00150
4 adapt [function] [call site] 00151
3 u32_to_u8 [function] [call site] 00152
4 u8_uctomb [function] [call site] 00153
4 rpl_free [function] [call site] 00154
4 realloc [call site] 00155
4 rpl_free [function] [call site] 00156
4 __errno_location [call site] 00157
4 u8_uctomb [function] [call site] 00158
4 abort [call site] 00159
4 __errno_location [call site] 00160
4 realloc [call site] 00161
3 strcmp [call site] 00162
3 idn2_register_u8 [function] [call site] 00163
4 strcmp [call site] 00164
4 rpl_free [function] [call site] 00165
4 strdup [call site] 00166
4 u8_strlen [function] [call site] 00167
4 _idn2_ascii_p [function] [call site] 00168
4 strdup [call site] 00169
4 _idn2_u8_to_u32_nfc [function] [call site] 00170
5 u8_to_u32 [function] [call site] 00171
6 u8_mbtoucr [function] [call site] 00172
6 rpl_free [function] [call site] 00173
6 __errno_location [call site] 00174
6 realloc [call site] 00175
6 rpl_free [function] [call site] 00176
6 __errno_location [call site] 00177
6 realloc [call site] 00178
5 __errno_location [call site] 00179
5 _isNFC [function] [call site] 00180
6 uc_combining_class [function] [call site] 00181
6 get_nfcqc_map [function] [call site] 00182
7 bsearch [call site] 00183
7 _compare_nfcqc_map [function] [call site] 00184
5 u32_normalize [function] [call site] 00185
6 u32_mbtouc_unsafe [function] [call site] 00186
6 abort [call site] 00187
6 abort [call site] 00188
6 uc_combining_class [function] [call site] 00189
6 gl_uninorm_decompose_merge_sort_inplace [function] [call site] 00190
7 gl_uninorm_decompose_merge_sort_inplace [function] [call site] 00191
8 gl_uninorm_decompose_merge_sort_fromto [function] [call site] 00192
9 gl_uninorm_decompose_merge_sort_fromto [function] [call site] 00193
10 gl_uninorm_decompose_merge_sort_fromto [function] [call site] 00194
11 merge [function] [call site] 00195
8 merge [function] [call site] 00196
6 u32_uctomb [function] [call site] 00197
6 __errno_location [call site] 00198
6 abort [call site] 00199
6 __errno_location [call site] 00200
6 u32_cpy [function] [call site] 00201
6 realloc [call site] 00202
6 __errno_location [call site] 00203
6 u32_uctomb [function] [call site] 00204
6 __errno_location [call site] 00205
6 abort [call site] 00206
6 abort [call site] 00207
6 __errno_location [call site] 00208
6 rpl_free [function] [call site] 00209
6 __errno_location [call site] 00210
6 realloc [call site] 00211
6 abort [call site] 00212
6 rpl_free [function] [call site] 00213
6 __errno_location [call site] 00214
6 rpl_free [function] [call site] 00215
6 rpl_free [function] [call site] 00216
6 __errno_location [call site] 00217
5 rpl_free [function] [call site] 00218
5 __errno_location [call site] 00219
4 _idn2_label_test [function] [call site] 00220
5 u32_normalize [function] [call site] 00221
5 __errno_location [call site] 00222
5 memcmp [call site] 00223
5 rpl_free [function] [call site] 00224
5 uc_is_general_category [function] [call site] 00225
6 bitmap_lookup [function] [call site] 00226
5 _idn2_disallowed_p [function] [call site] 00227
6 property [function] [call site] 00228
7 bsearch [call site] 00229
7 _compare [function] [call site] 00230
5 get_idna_map [function] [call site] 00231
6 bsearch [call site] 00232
6 _compare_idna_map [function] [call site] 00233
7 _fill_map [function] [call site] 00234
6 bsearch [call site] 00235
6 _compare_idna_map [function] [call site] 00236
6 bsearch [call site] 00237
6 _compare_idna_map [function] [call site] 00238
6 _fill_map [function] [call site] 00239
5 map_is [function] [call site] 00240
5 map_is [function] [call site] 00241
5 _idn2_contextj_p [function] [call site] 00242
6 property [function] [call site] 00243
5 _idn2_contextj_rule [function] [call site] 00244
6 _idn2_contextj_p [function] [call site] 00245
6 uc_combining_class [function] [call site] 00246
6 uc_joining_type [function] [call site] 00247
7 uc_is_general_category_withtable [function] [call site] 00248
8 lookup_withtable [function] [call site] 00249
6 uc_joining_type [function] [call site] 00250
6 uc_combining_class [function] [call site] 00251
5 _idn2_contexto_p [function] [call site] 00252
6 property [function] [call site] 00253
5 _idn2_contexto_p [function] [call site] 00254
5 _idn2_contexto_with_rule [function] [call site] 00255
5 _idn2_contexto_rule [function] [call site] 00256
6 _idn2_contexto_p [function] [call site] 00257
6 _uc_script_name [function] [call site] 00258
7 uc_script [function] [call site] 00259
6 strcmp [call site] 00260
6 _uc_script_name [function] [call site] 00261
6 strcmp [call site] 00262
6 _uc_script_name [function] [call site] 00263
6 strcmp [call site] 00264
6 _uc_script_name [function] [call site] 00265
6 strcmp [call site] 00266
6 _uc_script_name [function] [call site] 00267
6 strcmp [call site] 00268
5 _idn2_unassigned_p [function] [call site] 00269
6 property [function] [call site] 00270
5 _idn2_bidi [function] [call site] 00271
6 _isBidi [function] [call site] 00272
7 uc_bidi_category [function] [call site] 00273
8 uc_bidi_class [function] [call site] 00274
6 uc_bidi_category [function] [call site] 00275
6 uc_bidi_category [function] [call site] 00276
6 uc_bidi_category [function] [call site] 00277
5 get_idna_map [function] [call site] 00278
5 map_is [function] [call site] 00279
5 map_is [function] [call site] 00280
5 map_is [function] [call site] 00281
5 map_is [function] [call site] 00282
4 rpl_free [function] [call site] 00283
4 idn2_punycode_encode [function] [call site] 00284
5 encode_digit [function] [call site] 00285
5 encode_digit [function] [call site] 00286
5 adapt [function] [call site] 00287
4 rpl_free [function] [call site] 00288
4 strdup [call site] 00289
2 rpl_free [function] [call site] 00290
1 idn2_free [function] [call site] 00291
2 rpl_free [function] [call site] 00292
1 idn2_register_ul [function] [call site] 00293
1 idn2_register_ul [function] [call site] 00294
1 idn2_free [function] [call site] 00295
1 __assert_fail [call site] 00296
1 idn2_register_ul [function] [call site] 00297
1 idn2_free [function] [call site] 00298
1 idn2_register_ul [function] [call site] 00299