Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique Reachable Functions	Function Name	Function Callsite	Blocked Branch
None	k5_json_bool_create	call site: 00045	/src/krb5/src/util/support/json.c:186
None	k5_json_array_add	call site: 00049	/src/krb5/src/util/support/json.c:241
None	k5_json_object_set	call site: 00063	/src/krb5/src/util/support/json.c:458
None	k5_json_object_set	call site: 00064	/src/krb5/src/util/support/json.c:464
None	k5_json_string_create_len	call site: 00017	/src/krb5/src/util/support/json.c:501
None	k5_json_number_create	call site: 00039	/src/krb5/src/util/support/json.c:562
None	alloc_value	call site: 00018	/src/krb5/src/util/support/json.c:149
None	parse_value	call site: 00014	/src/krb5/src/util/support/json.c:1024
None	parse_value	call site: 00019	/src/krb5/src/util/support/json.c:1049
None	parse_value	call site: 00019	/src/krb5/src/util/support/json.c:1055
None	parse_value	call site: 00019	/src/krb5/src/util/support/json.c:1061
None	parse_string	call site: 00005	/src/krb5/src/util/support/json.c:816

Fuzzer calltree


         LLVMFuzzerTestOneInput

[function] [call site] 00000


           calloc

[call site] 00001


           k5_json_decode

[function] [call site] 00002


             parse_value

[function] [call site] 00003


               white_spaces

[function] [call site] 00004


               parse_string

[function] [call site] 00005


                 is_hex_digit

[function] [call site] 00006


                   is_digit

[function] [call site] 00007


                 is_hex_digit

[function] [call site] 00008


                 hexval

[function] [call site] 00009


                   is_digit

[function] [call site] 00010


                   abort

[call site] 00011


                 hexval

[function] [call site] 00012


                 strchr

[call site] 00013


               k5_json_string_create

[function] [call site] 00014


                 strlen

[call site] 00015


                 k5_json_string_create_len

[function] [call site] 00016


                   alloc_value

[function] [call site] 00017


                     calloc

[call site] 00018


               parse_object

[function] [call site] 00019


                 white_spaces

[function] [call site] 00020


                 k5_json_object_create

[function] [call site] 00021


                   alloc_value

[function] [call site] 00022


                 parse_object_association

[function] [call site] 00023


                   parse_string

[function] [call site] 00024


                   white_spaces

[function] [call site] 00025


                   white_spaces

[function] [call site] 00026


                   parse_value

[function] [call site] 00027


                     parse_array

[function] [call site] 00028


                       white_spaces

[function] [call site] 00029


                       k5_json_array_create

[function] [call site] 00030


                         alloc_value

[function] [call site] 00031


                       parse_array_item

[function] [call site] 00032


                         parse_value

[function] [call site] 00033


                           is_digit

[function] [call site] 00034


                           parse_number

[function] [call site] 00035


                             is_digit

[function] [call site] 00036


                             is_digit

[function] [call site] 00037


                             k5_json_number_create

[function] [call site] 00038


                               alloc_value

[function] [call site] 00039


                           strncmp

[call site] 00040


                           k5_json_null_create

[function] [call site] 00041


                             alloc_value

[function] [call site] 00042


                           strncmp

[call site] 00043


                           k5_json_bool_create

[function] [call site] 00044


                             alloc_value

[function] [call site] 00045


                           strncmp

[call site] 00046


                           k5_json_bool_create

[function] [call site] 00047


                         k5_json_array_add

[function] [call site] 00048


                           realloc

[call site] 00049


                           k5_json_retain

[function] [call site] 00050


                             __assert_fail

[call site] 00051


                         k5_json_release

[function] [call site] 00052


                           __assert_fail

[call site] 00053


                       k5_json_release

[function] [call site] 00054


                       white_spaces

[function] [call site] 00055


                       white_spaces

[function] [call site] 00056


                       k5_json_release

[function] [call site] 00057


                   k5_json_object_set

[function] [call site] 00058


                     object_search

[function] [call site] 00059


                       strcmp

[call site] 00060


                     k5_json_release

[function] [call site] 00061


                     k5_json_retain

[function] [call site] 00062


                     realloc

[call site] 00063


                     strdup

[call site] 00064


                     k5_json_retain

[function] [call site] 00065


                   k5_json_release

[function] [call site] 00066


                 k5_json_release

[function] [call site] 00067


                 white_spaces

[function] [call site] 00068


                 white_spaces

[function] [call site] 00069


                 k5_json_release

[function] [call site] 00070


             white_spaces

[function] [call site] 00071


             k5_json_release

[function] [call site] 00072


           k5_json_release

[function] [call site] 00073