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
35	2 : View List ['coap_log_impl', 'coap_get_log_level']	0	35	coap_pdu_resize	call site: 00019	/src/libcoap/src/coap_pdu.c:271
2	1 : View List ['coap_free_type']	0	2	coap_pdu_init	call site: 00006	/src/libcoap/src/coap_pdu.c:141
0	None	2	261	coap_split_uri_sub	call site: 00080	/src/libcoap/src/coap_uri.c:103
0	None	2	24	coap_log_impl	call site: 00117	/src/libcoap/src/coap_debug.c:1204
0	None	0	70	coap_pdu_parse_header	call site: 00022	/src/libcoap/src/coap_pdu.c:1008
0	None	0	39	coap_pdu_resize	call site: 00017	/src/libcoap/src/coap_pdu.c:262
0	None	0	35	coap_pdu_parse_header	call site: 00024	/src/libcoap/src/coap_pdu.c:1017
0	None	0	35	coap_pdu_parse_header	call site: 00025	/src/libcoap/src/coap_pdu.c:1022
0	None	0	35	coap_pdu_parse_opt	call site: 00000	/src/libcoap/src/coap_pdu.c:1277
0	None	0	0	coap_option_filter_op	call site: 00034	/src/libcoap/src/coap_option.c:479
0	None	0	0	coap_pdu_resize	call site: 00021	/src/libcoap/src/coap_pdu.c:280
0	None	0	0	coap_get_data_large	call site: 00171	/src/libcoap/src/coap_pdu.c:819

Fuzzer calltree


         LLVMFuzzerTestOneInput

[function] [call site] 00000


           coap_pdu_init

[function] [call site] 00001


             __assert_fail

[call site] 00002


             __assert_fail

[call site] 00003


             __assert_fail

[call site] 00004


             coap_malloc_type

[function] [call site] 00005


             coap_malloc_type

[function] [call site] 00006


             coap_free_type

[function] [call site] 00007


             coap_pdu_clear

[function] [call site] 00008


               __assert_fail

[call site] 00009


               __assert_fail

[call site] 00010


               __assert_fail

[call site] 00011


           coap_set_log_level

[function] [call site] 00012


           coap_pdu_parse

[function] [call site] 00013


             coap_pdu_parse_header_size

[function] [call site] 00014


               __assert_fail

[call site] 00015


             coap_pdu_resize

[function] [call site] 00016


               coap_get_log_level

[function] [call site] 00017


               __assert_fail

[call site] 00018


               coap_realloc_type

[function] [call site] 00019


                 realloc

[call site] 00020


               coap_get_log_level

[function] [call site] 00021


             coap_pdu_parse_header

[function] [call site] 00022


               __assert_fail

[call site] 00023


               coap_get_log_level

[function] [call site] 00024


               __assert_fail

[call site] 00025


               __assert_fail

[call site] 00026


               coap_get_log_level

[function] [call site] 00027


               coap_get_log_level

[function] [call site] 00028


           coap_get_query

[function] [call site] 00029


             coap_option_filter_clear

[function] [call site] 00030


             coap_option_filter_set

[function] [call site] 00031


               coap_option_filter_op

[function] [call site] 00032


                 is_long_option

[function] [call site] 00033


                 coap_fls

[function] [call site] 00034


                   coap_flsll

[function] [call site] 00035


             coap_option_iterator_init

[function] [call site] 00036


               __assert_fail

[call site] 00037


               __assert_fail

[call site] 00038


               __assert_fail

[call site] 00039


             coap_option_next

[function] [call site] 00040


               __assert_fail

[call site] 00041


               opt_finished

[function] [call site] 00042


                 __assert_fail

[call site] 00043


               coap_opt_parse

[function] [call site] 00044


                 __assert_fail

[call site] 00045


                 coap_get_log_level

[function] [call site] 00046


                 coap_get_log_level

[function] [call site] 00047


                 coap_get_log_level

[function] [call site] 00048


                 coap_get_log_level

[function] [call site] 00049


               __assert_fail

[call site] 00050


               coap_option_filter_get

[function] [call site] 00051


                 coap_option_filter_op

[function] [call site] 00052


             coap_opt_length

[function] [call site] 00053


               coap_get_log_level

[function] [call site] 00054


               coap_get_log_level

[function] [call site] 00055


             coap_opt_value

[function] [call site] 00056


               coap_get_log_level

[function] [call site] 00057


               coap_get_log_level

[function] [call site] 00058


             is_unescaped_in_query

[function] [call site] 00059


               is_unescaped_in_path

[function] [call site] 00060


             coap_new_string

[function] [call site] 00061


               __assert_fail

[call site] 00062


               coap_malloc_type

[function] [call site] 00063


               coap_get_log_level

[function] [call site] 00064


             coap_option_iterator_init

[function] [call site] 00065


             coap_option_next

[function] [call site] 00066


             coap_opt_length

[function] [call site] 00067


             coap_opt_value

[function] [call site] 00068


             is_unescaped_in_query

[function] [call site] 00069


           coap_get_uri_path

[function] [call site] 00070


             coap_check_option

[function] [call site] 00071


               coap_option_filter_clear

[function] [call site] 00072


               coap_option_filter_set

[function] [call site] 00073


               coap_option_iterator_init

[function] [call site] 00074


               coap_option_next

[function] [call site] 00075


             coap_opt_value

[function] [call site] 00076


             coap_opt_length

[function] [call site] 00077


             coap_split_proxy_uri

[function] [call site] 00078


               coap_split_uri_sub

[function] [call site] 00079


                 strlen

[call site] 00080


                 coap_get_log_level

[function] [call site] 00081


                 coap_get_log_level

[function] [call site] 00082


                 coap_dtls_is_supported

[function] [call site] 00083


                 coap_get_log_level

[function] [call site] 00084


                 coap_tcp_is_supported

[function] [call site] 00085


                 coap_get_log_level

[function] [call site] 00086


                 coap_tcp_is_supported

[function] [call site] 00087


                 coap_get_log_level

[function] [call site] 00088


                 coap_ws_is_supported

[function] [call site] 00089


                   coap_tcp_is_supported

[function] [call site] 00090


                 coap_get_log_level

[function] [call site] 00091


                 coap_wss_is_supported

[function] [call site] 00092


                   coap_tls_is_supported

[function] [call site] 00093


                 coap_get_log_level

[function] [call site] 00094


                 coap_get_log_level

[function] [call site] 00095


                 __ctype_b_loc

[call site] 00096


             coap_new_string

[function] [call site] 00097


             coap_option_filter_clear

[function] [call site] 00098


             coap_option_filter_set

[function] [call site] 00099


             coap_option_iterator_init

[function] [call site] 00100


             coap_option_next

[function] [call site] 00101


             coap_opt_length

[function] [call site] 00102


             coap_opt_value

[function] [call site] 00103


             is_unescaped_in_path

[function] [call site] 00104


             coap_new_string

[function] [call site] 00105


             coap_option_iterator_init

[function] [call site] 00106


             coap_option_next

[function] [call site] 00107


             coap_opt_length

[function] [call site] 00108


             coap_opt_value

[function] [call site] 00109


             is_unescaped_in_path

[function] [call site] 00110


           coap_show_pdu

[function] [call site] 00111


             coap_get_log_level

[function] [call site] 00112


             msg_type_string

[function] [call site] 00113


             msg_code_string

[function] [call site] 00114


               snprintf

[call site] 00115


             snprintf

[call site] 00116


             coap_log_impl

[function] [call site] 00117


               vsnprintf

[call site] 00118


               coap_ticks

[function] [call site] 00119


                 clock_gettime

[call site] 00120


               print_timestamp

[function] [call site] 00121


                 coap_ticks_to_rt

[function] [call site] 00122


                 localtime

[call site] 00123


                 strftime

[call site] 00124


                 coap_ticks_to_rt_us

[function] [call site] 00125


                 snprintf

[call site] 00126


               fprintf

[call site] 00127


               coap_log_level_desc

[function] [call site] 00128


               fprintf

[call site] 00129


               vfprintf

[call site] 00130


               fflush

[call site] 00131


             msg_code_string

[function] [call site] 00132


             snprintf

[call site] 00133


             coap_log_impl

[function] [call site] 00134


             msg_code_string

[function] [call site] 00135


             snprintf

[call site] 00136


             strlen

[call site] 00137


             snprintf

[call site] 00138


             strlen

[call site] 00139


             snprintf

[call site] 00140


             coap_option_iterator_init

[function] [call site] 00141


             strlen

[call site] 00142


             snprintf

[call site] 00143


             coap_option_next

[function] [call site] 00144


             strlen

[call site] 00145


             snprintf

[call site] 00146


             coap_decode_var_bytes

[function] [call site] 00147


             snprintf

[call site] 00148


             coap_opt_value

[function] [call site] 00149


             coap_opt_length

[function] [call site] 00150


             print_readable

[function] [call site] 00151


               __assert_fail

[call site] 00152


               __ctype_b_loc

[call site] 00153


             coap_opt_value

[function] [call site] 00154


             coap_opt_length

[function] [call site] 00155


             coap_decode_var_bytes

[function] [call site] 00156


             snprintf

[call site] 00157


             coap_decode_var_bytes

[function] [call site] 00158


             snprintf

[call site] 00159


             coap_opt_value

[function] [call site] 00160


             coap_opt_length

[function] [call site] 00161


             coap_decode_var_bytes

[function] [call site] 00162


             print_content_format

[function] [call site] 00163


               snprintf

[call site] 00164


               snprintf

[call site] 00165


             coap_opt_length

[function] [call site] 00166


             coap_get_data

[function] [call site] 00167


               coap_get_data_large

[function] [call site] 00168


                 __assert_fail

[call site] 00169


                 __assert_fail

[call site] 00170


                 __assert_fail

[call site] 00171


             coap_opt_block_num

[function] [call site] 00172


               coap_opt_length

[function] [call site] 00173


               coap_opt_value

[function] [call site] 00174


               coap_opt_length

[function] [call site] 00175


               coap_decode_var_bytes

[function] [call site] 00176


               coap_opt_length

[function] [call site] 00177


             coap_opt_length

[function] [call site] 00178


             snprintf

[call site] 00179


             coap_opt_block_num

[function] [call site] 00180


             coap_opt_length

[function] [call site] 00181


             snprintf

[call site] 00182


             coap_opt_block_num

[function] [call site] 00183


             coap_opt_length

[function] [call site] 00184


             coap_opt_length

[function] [call site] 00185


             snprintf

[call site] 00186


             coap_opt_length

[function] [call site] 00187


             coap_opt_value

[function] [call site] 00188


             strlen

[call site] 00189


             snprintf

[call site] 00190


             strlen

[call site] 00191


             snprintf

[call site] 00192


             strlen

[call site] 00193


             snprintf

[call site] 00194


             strlen

[call site] 00195


             snprintf

[call site] 00196


             strlen

[call site] 00197


             snprintf

[call site] 00198


             strlen

[call site] 00199


             snprintf

[call site] 00200


             strlen

[call site] 00201


             coap_opt_length

[function] [call site] 00202


             coap_opt_value

[function] [call site] 00203


             coap_opt_length

[function] [call site] 00204


             coap_decode_var_bytes

[function] [call site] 00205


             snprintf

[call site] 00206


             coap_opt_length

[function] [call site] 00207


             coap_opt_value

[function] [call site] 00208


             strlen

[call site] 00209


             snprintf

[call site] 00210


             strlen

[call site] 00211


             coap_opt_value

[function] [call site] 00212


             coap_opt_length

[function] [call site] 00213


             print_readable

[function] [call site] 00214


             strlen

[call site] 00215


             msg_option_string

[function] [call site] 00216


               snprintf

[call site] 00217


             snprintf

[call site] 00218


             strlen

[call site] 00219


             snprintf

[call site] 00220


             coap_get_data

[function] [call site] 00221


             strlen

[call site] 00222


             snprintf

[call site] 00223


             is_binary

[function] [call site] 00224


             __ctype_b_loc

[call site] 00225


             strlen

[call site] 00226


             snprintf

[call site] 00227


             fputs

[call site] 00228


             coap_get_log_level

[function] [call site] 00229


             strlen

[call site] 00230


             snprintf

[call site] 00231


             strlen

[call site] 00232


             snprintf

[call site] 00233


             strlen

[call site] 00234


             snprintf

[call site] 00235


             coap_get_log_level

[function] [call site] 00236


             __ctype_b_loc

[call site] 00237


             strlen

[call site] 00238


             snprintf

[call site] 00239


             strlen

[call site] 00240


             snprintf

[call site] 00241


             strlen

[call site] 00242


             print_readable

[function] [call site] 00243


             strlen

[call site] 00244


             snprintf

[call site] 00245


             fputs

[call site] 00246


             coap_get_log_level

[function] [call site] 00247


           coap_pdu_encode_header

[function] [call site] 00248


             coap_get_log_level

[function] [call site] 00249


             __assert_fail

[call site] 00250


             __assert_fail

[call site] 00251


             __assert_fail

[call site] 00252


             __assert_fail

[call site] 00253


             __assert_fail

[call site] 00254


             __assert_fail

[call site] 00255


             coap_get_log_level

[function] [call site] 00256


           coap_delete_string

[function] [call site] 00257


             coap_free_type

[function] [call site] 00258


           coap_delete_string

[function] [call site] 00259


           coap_delete_pdu

[function] [call site] 00260


             coap_free_type

[function] [call site] 00261


             coap_free_type

[function] [call site] 00262