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
14	14	2 : View List ['mhd_panic', 'pthread_mutex_unlock']	14	14	MHD_response_add_header	call site: 00031	/src/mhd2/src/mhd2/response_add_header.c:150
12	12	1 : View List ['mhd_panic']	55	93	MHD_response_destroy	call site: 00141	/src/mhd2/src/mhd2/response_destroy.c:109
2	2	1 : View List ['pthread_mutex_lock']	16	35	MHD_response_add_header	call site: 00029	/src/mhd2/src/mhd2/response_add_header.c:136
0	5	1 : View List ['mhd_response_remove_auth_digest_headers']	0	5	response_add_auth_digest_challenge_int	call site: 00120	/src/mhd2/src/mhd2/response_auth_digest.c:471
0	0	None	43	43	MHD_response_destroy	call site: 00142	/src/mhd2/src/mhd2/response_destroy.c:112
0	0	None	28	36	MHD_response_set_options	call site: 00057	/src/mhd2/src/mhd2/response_set_options.c:38
0	0	None	14	78	MHD_response_add_auth_digest_challenge	call site: 00103	/src/mhd2/src/mhd2/response_auth_digest.c:511
0	0	None	14	41	MHD_response_add_auth_basic_challenge	call site: 00090	/src/mhd2/src/mhd2/response_auth_basic.c:161
0	0	None	14	22	MHD_response_set_options	call site: 00059	/src/mhd2/src/mhd2/response_set_options.c:59
0	0	None	14	14	MHD_response_add_auth_basic_challenge	call site: 00090	/src/mhd2/src/mhd2/response_auth_basic.c:168
0	0	None	14	14	MHD_response_add_auth_basic_challenge	call site: 00090	/src/mhd2/src/mhd2/response_auth_basic.c:170
0	0	None	14	14	MHD_response_add_auth_digest_challenge	call site: 00103	/src/mhd2/src/mhd2/response_auth_digest.c:518

Fuzzer calltree


         LLVMFuzzerTestOneInput

[function] [call site] 00000


           pick_status_code(FuzzedDataProvider&)

[function] [call site] 00001


           create_response(FuzzedDataProvider&, MHD_HTTP_StatusCode)

[function] [call site] 00002


             MHD_response_from_buffer

[function] [call site] 00003


               response_create_basic

[function] [call site] 00004


                 calloc

[call site] 00005


                 calloc

[call site] 00006


             MHD_response_from_buffer

[function] [call site] 00007


             MHD_response_from_buffer_copy

[function] [call site] 00008


               response_create_basic

[function] [call site] 00009


               response_cntn_free_buf

[function] [call site] 00010


               response_create_basic

[function] [call site] 00011


             MHD_response_from_iovec

[function] [call site] 00012


               response_create_basic

[function] [call site] 00013


               calloc

[call site] 00014


               response_create_basic

[function] [call site] 00015


             mkstemp

[call site] 00016


             unlink

[call site] 00017


             write

[call site] 00018


             MHD_response_from_fd

[function] [call site] 00019


               response_create_basic

[function] [call site] 00020


             close

[call site] 00021


             pipe

[call site] 00022


             write

[call site] 00023


             close

[call site] 00024


             MHD_response_from_pipe

[function] [call site] 00025


               response_create_basic

[function] [call site] 00026


             close

[call site] 00027


           add_headers(FuzzedDataProvider&, MHD_Response*)

[function] [call site] 00028


             MHD_response_add_header

[function] [call site] 00029


               pthread_mutex_lock

[call site] 00030


               response_add_header_int

[function] [call site] 00031


                 strlen

[call site] 00032


                 strlen

[call site] 00033


                 memchr

[call site] 00034


                 memchr

[call site] 00035


                 memchr

[call site] 00036


                 memchr

[call site] 00037


                 memchr

[call site] 00038


                 memchr

[call site] 00039


                 memchr

[call site] 00040


                 response_add_header_no_check

[function] [call site] 00041


               pthread_mutex_unlock

[call site] 00042


               mhd_panic

[function] [call site] 00043


                 fprintf

[call site] 00044


                 fprintf

[call site] 00045


                 fprintf

[call site] 00046


                 abort

[call site] 00047


             safe_ascii(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, bool)

[function] [call site] 00048


             safe_ascii(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, bool)

[function] [call site] 00049


             MHD_response_add_header

[function] [call site] 00050


             safe_ascii(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, bool)

[function] [call site] 00051


             MHD_response_add_predef_header

[function] [call site] 00052


           randomise_response_options(FuzzedDataProvider&, MHD_Response*)

[function] [call site] 00053


             ToMhdBool(bool)

[function] [call site] 00054


             MHD_R_OPTION_REUSABLE(MHD_Bool)

[function] [call site] 00055


             MHD_response_set_options

[function] [call site] 00056


               pthread_mutex_lock

[call site] 00057


               pthread_mutex_unlock

[call site] 00058


               mhd_panic

[function] [call site] 00059


               response_make_reusable

[function] [call site] 00060


                 pthread_mutex_init

[call site] 00061


                 pthread_mutex_destroy

[call site] 00062


               pthread_mutex_unlock

[call site] 00063


               mhd_panic

[function] [call site] 00064


             ToMhdBool(bool)

[function] [call site] 00065


             MHD_R_OPTION_HEAD_ONLY_RESPONSE(MHD_Bool)

[function] [call site] 00066


             MHD_response_set_options

[function] [call site] 00067


             ToMhdBool(bool)

[function] [call site] 00068


             MHD_R_OPTION_CHUNKED_ENC(MHD_Bool)

[function] [call site] 00069


             MHD_response_set_options

[function] [call site] 00070


             ToMhdBool(bool)

[function] [call site] 00071


             MHD_R_OPTION_CONN_CLOSE(MHD_Bool)

[function] [call site] 00072


             MHD_response_set_options

[function] [call site] 00073


             ToMhdBool(bool)

[function] [call site] 00074


             MHD_R_OPTION_HTTP_1_0_SERVER(MHD_Bool)

[function] [call site] 00075


             MHD_response_set_options

[function] [call site] 00076


             ToMhdBool(bool)

[function] [call site] 00077


             MHD_R_OPTION_HTTP_1_0_COMPATIBLE_STRICT(MHD_Bool)

[function] [call site] 00078


             MHD_response_set_options

[function] [call site] 00079


             ToMhdBool(bool)

[function] [call site] 00080


             MHD_R_OPTION_INSANITY_HEADER_CONTENT_LENGTH(MHD_Bool)

[function] [call site] 00081


             MHD_response_set_options

[function] [call site] 00082


             MHD_R_OPTION_TERMINATION_CALLBACK(void (*)(void*, MHD_RequestEndedData const*, void*), void*)

[function] [call site] 00083


             request_ended_cb(void*, MHD_RequestEndedData const*, void*)

[function] [call site] 00084


             MHD_response_set_options

[function] [call site] 00085


           add_auth(FuzzedDataProvider&, MHD_Response*, MHD_HTTP_StatusCode)

[function] [call site] 00086


             safe_ascii(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, bool)

[function] [call site] 00087


             ToMhdBool(bool)

[function] [call site] 00088


             MHD_response_add_auth_basic_challenge

[function] [call site] 00089


               pthread_mutex_lock

[call site] 00090


               response_add_auth_basic_challenge_int

[function] [call site] 00091


                 strlen

[call site] 00092


                 memchr

[call site] 00093


                 memchr

[call site] 00094


                 mhd_str_quote

[function] [call site] 00095


                 realloc

[call site] 00096


               pthread_mutex_unlock

[call site] 00097


               mhd_panic

[function] [call site] 00098


             safe_ascii(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, bool)

[function] [call site] 00099


             ToMhdBool(bool)

[function] [call site] 00100


             ToMhdBool(bool)

[function] [call site] 00101


             MHD_response_add_auth_digest_challenge

[function] [call site] 00102


               pthread_mutex_lock

[call site] 00103


               response_add_auth_digest_challenge_int

[function] [call site] 00104


                 strlen

[call site] 00105


                 strlen

[call site] 00106


                 strlen

[call site] 00107


                 memchr

[call site] 00108


                 memchr

[call site] 00109


                 memchr

[call site] 00110


                 memchr

[call site] 00111


                 memchr

[call site] 00112


                 memchr

[call site] 00113


                 memchr

[call site] 00114


                 response_add_auth_digest_challenge_alg

[function] [call site] 00115


                   mhd_str_quote

[function] [call site] 00116


                   mhd_str_quote

[function] [call site] 00117


                   realloc

[call site] 00118


                 response_add_auth_digest_challenge_alg

[function] [call site] 00119


                 response_add_auth_digest_challenge_alg

[function] [call site] 00120


                 mhd_response_remove_auth_digest_headers

[function] [call site] 00121


               pthread_mutex_unlock

[call site] 00122


               mhd_panic

[function] [call site] 00123


             safe_ascii(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, bool)

[function] [call site] 00124


             ToMhdBool(bool)

[function] [call site] 00125


             ToMhdBool(bool)

[function] [call site] 00126


             ToMhdBool(bool)

[function] [call site] 00127


             MHD_response_add_auth_digest_challenge

[function] [call site] 00128


             safe_ascii(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, bool)

[function] [call site] 00129


             ToMhdBool(bool)

[function] [call site] 00130


             MHD_response_add_auth_basic_challenge

[function] [call site] 00131


             safe_ascii(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, bool)

[function] [call site] 00132


             ToMhdBool(bool)

[function] [call site] 00133


             MHD_response_add_auth_basic_challenge

[function] [call site] 00134


             safe_ascii(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, bool)

[function] [call site] 00135


             ToMhdBool(bool)

[function] [call site] 00136


             ToMhdBool(bool)

[function] [call site] 00137


             MHD_response_add_auth_digest_challenge

[function] [call site] 00138


           MHD_HTTP_status_code_to_string

[function] [call site] 00139


           MHD_status_code_to_string

[call site] 00140


           MHD_response_destroy

[function] [call site] 00141


             mhd_panic

[function] [call site] 00142


             response_full_deinit

[function] [call site] 00143


               mhd_response_remove_auth_digest_headers

[function] [call site] 00144


               mhd_response_remove_all_headers

[function] [call site] 00145


               mhd_response_deinit_reusable

[function] [call site] 00146


                 pthread_mutex_destroy

[call site] 00147


                 mhd_panic

[function] [call site] 00148


               mhd_response_deinit_content_data

[function] [call site] 00149


                 close

[call site] 00150


             mhd_response_dec_use_count

[function] [call site] 00151


               mhd_panic

[function] [call site] 00152


               response_full_deinit

[function] [call site] 00153