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: 00148	/src/protobuf-c/protobuf-c/protobuf-c.c:1513
0	None	109	568	protobuf_c_message_get_packed_size	call site: 00104	/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: 00062	/src/protobuf-c/protobuf-c/protobuf-c.c:2205
0	None	0	156	merge_messages	call site: 00066	/src/protobuf-c/protobuf-c/protobuf-c.c:2276
0	None	0	145	parse_required_member	call site: 00039	/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


                   unzigzag32

[function] [call site] 00028


                   parse_fixed_uint32

[function] [call site] 00029


                   parse_uint64

[function] [call site] 00030


                     parse_uint32

[function] [call site] 00031


                   parse_uint64

[function] [call site] 00032


                   unzigzag64

[function] [call site] 00033


                   parse_fixed_uint64

[function] [call site] 00034


                   parse_boolean

[function] [call site] 00035


                   do_free

[function] [call site] 00036


                   do_alloc

[function] [call site] 00037


                   do_free

[function] [call site] 00038


                   do_alloc

[function] [call site] 00039


                   protobuf_c_message_unpack

[function] [call site] 00040


                     do_free

[function] [call site] 00041


                     do_free

[function] [call site] 00042


                     protobuf_c_message_free_unpacked

[function] [call site] 00043


                       __assert_fail

[call site] 00044


                       do_free

[function] [call site] 00045


                       do_free

[function] [call site] 00046


                       protobuf_c_message_free_unpacked

[function] [call site] 00047


                         do_free

[function] [call site] 00048


                         do_free

[function] [call site] 00049


                         do_free

[function] [call site] 00050


                         protobuf_c_message_free_unpacked

[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


                     do_free

[function] [call site] 00058


                     do_free

[function] [call site] 00059


                   merge_messages

[function] [call site] 00060


                     sizeof_elt_in_repeated_array

[function] [call site] 00061


                     do_alloc

[function] [call site] 00062


                     do_free

[function] [call site] 00063


                     do_free

[function] [call site] 00064


                     int_range_lookup

[function] [call site] 00065


                     merge_messages

[function] [call site] 00066


                       sizeof_elt_in_repeated_array

[function] [call site] 00067


                   protobuf_c_message_free_unpacked

[function] [call site] 00068


                 parse_oneof_member

[function] [call site] 00069


                   int_range_lookup

[function] [call site] 00070


                   sizeof_elt_in_repeated_array

[function] [call site] 00071


                   do_free

[function] [call site] 00072


                   do_free

[function] [call site] 00073


                   protobuf_c_message_free_unpacked

[function] [call site] 00074


                   parse_required_member

[function] [call site] 00075


                 parse_optional_member

[function] [call site] 00076


                   parse_required_member

[function] [call site] 00077


                 is_packable_type

[function] [call site] 00078


                 parse_packed_repeated_member

[function] [call site] 00079


                   sizeof_elt_in_repeated_array

[function] [call site] 00080


                   scan_varint

[function] [call site] 00081


                   parse_int32

[function] [call site] 00082


                   scan_varint

[function] [call site] 00083


                   parse_uint32

[function] [call site] 00084


                   unzigzag32

[function] [call site] 00085


                   scan_varint

[function] [call site] 00086


                   parse_uint32

[function] [call site] 00087


                   scan_varint

[function] [call site] 00088


                   parse_uint64

[function] [call site] 00089


                   unzigzag64

[function] [call site] 00090


                   scan_varint

[function] [call site] 00091


                   parse_uint64

[function] [call site] 00092


                   scan_varint

[function] [call site] 00093


                   parse_boolean

[function] [call site] 00094


                   __assert_fail

[call site] 00095


                 parse_repeated_member

[function] [call site] 00096


                   sizeof_elt_in_repeated_array

[function] [call site] 00097


                   parse_required_member

[function] [call site] 00098


                 __assert_fail

[call site] 00099


           foo__test_mess_sub_mess__get_packed_size

[function] [call site] 00100


             __assert_fail

[call site] 00101


             protobuf_c_message_get_packed_size

[function] [call site] 00102


               __assert_fail

[call site] 00103


               required_field_get_packed_size

[function] [call site] 00104


                 get_tag_size

[function] [call site] 00105


                 sint32_size

[function] [call site] 00106


                   zigzag32

[function] [call site] 00107


                   uint32_size

[function] [call site] 00108


                 int32_size

[function] [call site] 00109


                 uint32_size

[function] [call site] 00110


                 sint64_size

[function] [call site] 00111


                   zigzag64

[function] [call site] 00112


                   uint64_size

[function] [call site] 00113


                     uint32_size

[function] [call site] 00114


                 uint64_size

[function] [call site] 00115


                 strlen

[call site] 00116


                 uint32_size

[function] [call site] 00117


                 uint32_size

[function] [call site] 00118


                 protobuf_c_message_get_packed_size

[function] [call site] 00119


                   oneof_field_get_packed_size

[function] [call site] 00120


                     required_field_get_packed_size

[function] [call site] 00121


                       uint32_size

[function] [call site] 00122


                       __assert_fail

[call site] 00123


                   optional_field_get_packed_size

[function] [call site] 00124


                     required_field_get_packed_size

[function] [call site] 00125


                   unlabeled_field_get_packed_size

[function] [call site] 00126


                     field_is_zeroish

[function] [call site] 00127


                     required_field_get_packed_size

[function] [call site] 00128


                   repeated_field_get_packed_size

[function] [call site] 00129


                     get_tag_size

[function] [call site] 00130


                     sint32_size

[function] [call site] 00131


                     int32_size

[function] [call site] 00132


                     uint32_size

[function] [call site] 00133


                     sint64_size

[function] [call site] 00134


                     uint64_size

[function] [call site] 00135


                     strlen

[call site] 00136


                     uint32_size

[function] [call site] 00137


                     uint32_size

[function] [call site] 00138


                     protobuf_c_message_get_packed_size

[function] [call site] 00139


                       unknown_field_get_packed_size

[function] [call site] 00140


                         get_tag_size

[function] [call site] 00141


                     uint32_size

[function] [call site] 00142


                     uint32_size

[function] [call site] 00143


           foo__test_mess_sub_mess__pack

[function] [call site] 00144


             __assert_fail

[call site] 00145


             protobuf_c_message_pack

[function] [call site] 00146


               __assert_fail

[call site] 00147


               required_field_pack

[function] [call site] 00148


                 tag_pack

[function] [call site] 00149


                   uint32_pack

[function] [call site] 00150


                   uint64_pack

[function] [call site] 00151


                     uint32_pack

[function] [call site] 00152


                 sint32_pack

[function] [call site] 00153


                   zigzag32

[function] [call site] 00154


                   uint32_pack

[function] [call site] 00155


                 int32_pack

[function] [call site] 00156


                   uint32_pack

[function] [call site] 00157


                 uint32_pack

[function] [call site] 00158


                 sint64_pack

[function] [call site] 00159


                   zigzag64

[function] [call site] 00160


                   uint64_pack

[function] [call site] 00161


                 uint64_pack

[function] [call site] 00162


                 fixed32_pack

[function] [call site] 00163


                 fixed64_pack

[function] [call site] 00164


                 boolean_pack

[function] [call site] 00165


                 string_pack

[function] [call site] 00166


                   strlen

[call site] 00167


                   uint32_pack

[function] [call site] 00168


                 binary_data_pack

[function] [call site] 00169


                   uint32_pack

[function] [call site] 00170


                 prefixed_message_pack

[function] [call site] 00171


                   protobuf_c_message_pack

[function] [call site] 00172


                     oneof_field_pack

[function] [call site] 00173


                       required_field_pack

[function] [call site] 00174


                         __assert_fail

[call site] 00175


                     optional_field_pack

[function] [call site] 00176


                       required_field_pack

[function] [call site] 00177


                     unlabeled_field_pack

[function] [call site] 00178


                       field_is_zeroish

[function] [call site] 00179


                       required_field_pack

[function] [call site] 00180


                     repeated_field_pack

[function] [call site] 00181


                       tag_pack

[function] [call site] 00182


                       get_type_min_size

[function] [call site] 00183


                       uint32_size

[function] [call site] 00184


                       copy_to_little_endian_32

[function] [call site] 00185


                       copy_to_little_endian_64

[function] [call site] 00186


                       int32_pack

[function] [call site] 00187


                       sint32_pack

[function] [call site] 00188


                       sint64_pack

[function] [call site] 00189


                       uint32_pack

[function] [call site] 00190


                       uint64_pack

[function] [call site] 00191


                       boolean_pack

[function] [call site] 00192


                       __assert_fail

[call site] 00193


                       uint32_size

[function] [call site] 00194


                       __assert_fail

[call site] 00195


                       uint32_pack

[function] [call site] 00196


                       sizeof_elt_in_repeated_array

[function] [call site] 00197


                       required_field_pack

[function] [call site] 00198


                     unknown_field_pack

[function] [call site] 00199


                       tag_pack

[function] [call site] 00200


                   uint32_size

[function] [call site] 00201


                   uint32_pack

[function] [call site] 00202


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

[function] [call site] 00203


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

[function] [call site] 00204


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

[function] [call site] 00205


           foo__test_mess_sub_mess__free_unpacked

[function] [call site] 00206


             __assert_fail

[call site] 00207


             protobuf_c_message_free_unpacked

[function] [call site] 00208


           foo__test_field_flags__unpack

[function] [call site] 00209


             protobuf_c_message_unpack

[function] [call site] 00210


           foo__test_field_flags__get_packed_size

[function] [call site] 00211


             __assert_fail

[call site] 00212


             protobuf_c_message_get_packed_size

[function] [call site] 00213


           foo__test_field_flags__pack

[function] [call site] 00214


             __assert_fail

[call site] 00215


             protobuf_c_message_pack

[function] [call site] 00216


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

[function] [call site] 00217


           foo__test_field_flags__free_unpacked

[function] [call site] 00218


             __assert_fail

[call site] 00219


             protobuf_c_message_free_unpacked

[function] [call site] 00220


           foo__test_message_check__unpack

[function] [call site] 00221


             protobuf_c_message_unpack

[function] [call site] 00222


           foo__test_message_check__get_packed_size

[function] [call site] 00223


             __assert_fail

[call site] 00224


             protobuf_c_message_get_packed_size

[function] [call site] 00225


           foo__test_message_check__pack

[function] [call site] 00226


             __assert_fail

[call site] 00227


             protobuf_c_message_pack

[function] [call site] 00228


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

[function] [call site] 00229


           foo__test_message_check__free_unpacked

[function] [call site] 00230


             __assert_fail

[call site] 00231


             protobuf_c_message_free_unpacked

[function] [call site] 00232