memory leak in mpca_lang function

[NotmebutWind]

there is memory leak in mpca_lang function 1、 compile the lib with asan : make CC=gcc -fsanitize=address -g 2、test.c: example/foobar.c 3、input: char* foobar = "#@$^^&^(\x00"; argv[1] = "#@$^^&^(\x00"; 4 compile and run ,find crash:

================================================================= ==2182132==ERROR: LeakSanitizer: detected memory leaks Direct leak of 72 byte(s) in 1 object(s) allocated from: #0 0x7fc4e00dc867 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145 #1 0x55a33cc0476e in mpc_malloc ../mpc.c:241 #2 0x55a33cc09120 in mpc_err_or ../mpc.c:760 #3 0x55a33cc0a6ed in mpc_err_merge ../mpc.c:878 #4 0x55a33cc0e3b8 in mpc_parse_input ../mpc.c:1318 #5 0x55a33cc1fc6b in mpca_lang_st ../mpc.c:3724 #6 0x55a33cc2068b in mpca_lang ../mpc.c:3794 #7 0x55a33cc02f7e in fuzzloop ../examples/foobar.c:11 #8 0x55a33cc2ac89 in fuzzFunction ./wrapentry.c:98 Indirect leak of 192 byte(s) in 3 object(s) allocated from: #0 0x7fc4e00dc867 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145 #1 0x55a33cc04b7f in mpc_export ../mpc.c:289 #2 0x55a33cc08b50 in mpc_err_export ../mpc.c:723 #3 0x55a33cc0e3cd in mpc_parse_input ../mpc.c:1318 #4 0x55a33cc1fc6b in mpca_lang_st ../mpc.c:3724 #5 0x55a33cc2068b in mpca_lang ../mpc.c:3794 #6 0x55a33cc02f7e in fuzzloop ../examples/foobar.c:11 #7 0x55a33cc2ac89 in fuzzFunction ./wrapentry.c:98 Indirect leak of 64 byte(s) in 1 object(s) allocated from: #0 0x7fc4e00dc867 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145 #1 0x55a33cc04b7f in mpc_export ../mpc.c:289 #2 0x55a33cc08c69 in mpc_err_export ../mpc.c:726 #3 0x55a33cc0e3cd in mpc_parse_input ../mpc.c:1318 #4 0x55a33cc1fc6b in mpca_lang_st ../mpc.c:3724 #5 0x55a33cc2068b in mpca_lang ../mpc.c:3794 #6 0x55a33cc02f7e in fuzzloop ../examples/foobar.c:11 #7 0x55a33cc2ac89 in fuzzFunction ./wrapentry.c:98 Indirect leak of 24 byte(s) in 1 object(s) allocated from: #0 0x7fc4e00dcc18 in __interceptor_realloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:164 #1 0x55a33cc04abe in mpc_realloc ../mpc.c:274 #2 0x55a33cc08ee4 in mpc_err_add_expected ../mpc.c:743 #3 0x55a33cc09a14 in mpc_err_or ../mpc.c:787 #4 0x55a33cc0a6ed in mpc_err_merge ../mpc.c:878 #5 0x55a33cc0e3b8 in mpc_parse_input ../mpc.c:1318 #6 0x55a33cc1fc6b in mpca_lang_st ../mpc.c:3724 #7 0x55a33cc2068b in mpca_lang ../mpc.c:3794 #8 0x55a33cc02f7e in fuzzloop ../examples/foobar.c:11 #9 0x55a33cc2ac89 in fuzzFunction ./wrapentry.c:98 SUMMARY: AddressSanitizer: 352 byte(s) leaked in 6 allocation(s).