Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique Reachable Complexities	Unique Reachable Functions	All non-covered Complexity	All Reachable Complexity	Function Name	Function Callsite	Blocked Branch
3	1 : View List ['do_free']	0	3	protobuf_c_message_unpack	call site: 00021	/src/protobuf-c/protobuf-c/protobuf-c.c:3304
3	1 : View List ['do_free']	0	3	protobuf_c_message_unpack	call site: 00021	/src/protobuf-c/protobuf-c/protobuf-c.c:3312
3	1 : View List ['do_free']	0	3	protobuf_c_message_unpack	call site: 00021	/src/protobuf-c/protobuf-c/protobuf-c.c:3320
0	None	179	948	protobuf_c_message_pack	call site: 00000	/src/protobuf-c/protobuf-c/protobuf-c.c:1513
0	None	109	568	protobuf_c_message_get_packed_size	call site: 00000	/src/protobuf-c/protobuf-c/protobuf-c.c:738
0	None	0	420	protobuf_c_message_unpack	call site: 00004	/src/protobuf-c/protobuf-c/protobuf-c.c:3064
0	None	0	420	protobuf_c_message_unpack	call site: 00004	/src/protobuf-c/protobuf-c/protobuf-c.c:3069
0	None	0	369	protobuf_c_message_unpack	call site: 00014	/src/protobuf-c/protobuf-c/protobuf-c.c:3234
0	None	0	369	protobuf_c_message_unpack	call site: 00019	/src/protobuf-c/protobuf-c/protobuf-c.c:3256
0	None	0	156	merge_messages	call site: 00060	/src/protobuf-c/protobuf-c/protobuf-c.c:2205
0	None	0	156	merge_messages	call site: 00064	/src/protobuf-c/protobuf-c/protobuf-c.c:2276
0	None	0	145	parse_required_member	call site: 00037	/src/protobuf-c/protobuf-c/protobuf-c.c:2606

Fuzzer calltree


         LLVMFuzzerTestOneInput

[function] [call site] 00000


           foo__test_mess_sub_mess__unpack

[function] [call site] 00001


             protobuf_c_message_unpack

[function] [call site] 00002


               __assert_fail

[call site] 00003


               do_alloc

[function] [call site] 00004


               do_alloc

[function] [call site] 00005


               do_free

[function] [call site] 00006


               protobuf_c_message_init

[function] [call site] 00007


               message_init_generic

[function] [call site] 00008


               parse_tag_and_wiretype

[function] [call site] 00009


               int_range_lookup

[function] [call site] 00010


               scan_length_prefixed_data

[function] [call site] 00011


               do_alloc

[function] [call site] 00012


               is_packable_type

[function] [call site] 00013


               count_packed_elements

[function] [call site] 00014


                 max_b128_numbers

[function] [call site] 00015


               sizeof_elt_in_repeated_array

[function] [call site] 00016


                 __assert_fail

[call site] 00017


               __assert_fail

[call site] 00018


               do_alloc

[function] [call site] 00019


               do_alloc

[function] [call site] 00020


               parse_member

[function] [call site] 00021


                 do_alloc

[function] [call site] 00022


                 parse_required_member

[function] [call site] 00023


                   parse_int32

[function] [call site] 00024


                     parse_uint32

[function] [call site] 00025


                   parse_uint32

[function] [call site] 00026


                   parse_uint32

[function] [call site] 00027


                   parse_fixed_uint32

[function] [call site] 00028


                   parse_uint64

[function] [call site] 00029


                     parse_uint32

[function] [call site] 00030


                   parse_uint64

[function] [call site] 00031


                   parse_fixed_uint64

[function] [call site] 00032


                   parse_boolean

[function] [call site] 00033


                   do_free

[function] [call site] 00034


                   do_alloc

[function] [call site] 00035


                   do_free

[function] [call site] 00036


                   do_alloc

[function] [call site] 00037


                   protobuf_c_message_unpack

[function] [call site] 00038


                     do_free

[function] [call site] 00039


                     do_free

[function] [call site] 00040


                     protobuf_c_message_free_unpacked

[function] [call site] 00041


                       __assert_fail

[call site] 00042


                       do_free

[function] [call site] 00043


                       do_free

[function] [call site] 00044


                       protobuf_c_message_free_unpacked

[function] [call site] 00045


                         do_free

[function] [call site] 00046


                         do_free

[function] [call site] 00047


                         do_free

[function] [call site] 00048


                         protobuf_c_message_free_unpacked

[function] [call site] 00049


                           do_free

[function] [call site] 00050


                           do_free

[function] [call site] 00051


                           do_free

[function] [call site] 00052


                     do_free

[function] [call site] 00053


                     do_free

[function] [call site] 00054


                     do_free

[function] [call site] 00055


                     do_free

[function] [call site] 00056


                     do_free

[function] [call site] 00057


                   merge_messages

[function] [call site] 00058


                     sizeof_elt_in_repeated_array

[function] [call site] 00059


                     do_alloc

[function] [call site] 00060


                     do_free

[function] [call site] 00061


                     do_free

[function] [call site] 00062


                     int_range_lookup

[function] [call site] 00063


                     merge_messages

[function] [call site] 00064


                       sizeof_elt_in_repeated_array

[function] [call site] 00065


                   protobuf_c_message_free_unpacked

[function] [call site] 00066


                 parse_oneof_member

[function] [call site] 00067


                   int_range_lookup

[function] [call site] 00068


                   sizeof_elt_in_repeated_array

[function] [call site] 00069


                   do_free

[function] [call site] 00070


                   do_free

[function] [call site] 00071


                   protobuf_c_message_free_unpacked

[function] [call site] 00072


                   parse_required_member

[function] [call site] 00073


                 parse_optional_member

[function] [call site] 00074


                   parse_required_member

[function] [call site] 00075


                 is_packable_type

[function] [call site] 00076


                 parse_packed_repeated_member

[function] [call site] 00077


                   sizeof_elt_in_repeated_array

[function] [call site] 00078


                   scan_varint

[function] [call site] 00079


                   parse_int32

[function] [call site] 00080


                   scan_varint

[function] [call site] 00081


                   parse_uint32

[function] [call site] 00082


                   scan_varint

[function] [call site] 00083


                   parse_uint32

[function] [call site] 00084


                   scan_varint

[function] [call site] 00085


                   parse_uint64

[function] [call site] 00086


                   scan_varint

[function] [call site] 00087


                   parse_uint64

[function] [call site] 00088


                   scan_varint

[function] [call site] 00089


                   parse_boolean

[function] [call site] 00090


                   __assert_fail

[call site] 00091


                 parse_repeated_member

[function] [call site] 00092


                   sizeof_elt_in_repeated_array

[function] [call site] 00093


                   parse_required_member

[function] [call site] 00094


                 __assert_fail

[call site] 00095


           fuzzing::memory::memory_test(void const*, unsigned long)

[function] [call site] 00096


             fuzzing::memory::memory_test_asan(void const*, unsigned long)

[function] [call site] 00097


             fuzzing::memory::memory_test_msan(void const*, unsigned long)

[function] [call site] 00098


           foo__test_field_flags__unpack

[function] [call site] 00099


             protobuf_c_message_unpack

[function] [call site] 00100


           fuzzing::memory::memory_test(void const*, unsigned long)

[function] [call site] 00101


           foo__test_message_check__unpack

[function] [call site] 00102


             protobuf_c_message_unpack

[function] [call site] 00103


           fuzzing::memory::memory_test(void const*, unsigned long)

[function] [call site] 00104