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| author | Joshua Rogers <jrogers@opera.com> | 2021-04-02 22:23:11 +0000 |
|---|---|---|
| committer | Joshua Rogers <jrogers@opera.com> | 2021-04-02 22:23:11 +0000 |
| commit | 920e9402a4d6101bbbed2ef7584d85a3c3de0eaa (patch) | |
| tree | c8d8a258835b09099a30d9302ef0a9114a3ecae2 /src/afl-cc.c | |
| parent | e98cd008222aa3bfea9b696ad756163302437eb3 (diff) | |
| download | afl++-920e9402a4d6101bbbed2ef7584d85a3c3de0eaa.tar.gz | |
Add support for standalone leak-sanitizer, introducting the environment
variable AFL_USE_LSAN. AFL_USE_LSAN introduces the macro __AFL_CHECK_LEAK() which will check for a memory leak when the macro is run. This is especially helpful when using __AFL_LOOP(). If __AFL_LEAK_CHECK() is not used when AFL_USE_LSAN=1 is set, the leak checker will run when the program exits.
Diffstat (limited to 'src/afl-cc.c')
| -rw-r--r-- | src/afl-cc.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/src/afl-cc.c b/src/afl-cc.c index 5251465b..e0478503 100644 --- a/src/afl-cc.c +++ b/src/afl-cc.c @@ -758,7 +758,7 @@ static void edit_params(u32 argc, char **argv, char **envp) { if (!strncmp(cur, "-fsanitize-coverage-", 20) && strstr(cur, "list=")) have_instr_list = 1; - if (!strcmp(cur, "-fsanitize=address") || !strcmp(cur, "-fsanitize=memory")) + if (!(strcmp(cur, "-fsanitize=address") && strcmp(cur, "-fsanitize=memory"))) asan_set = 1; if (strstr(cur, "FORTIFY_SOURCE")) fortify_set = 1; @@ -817,6 +817,10 @@ static void edit_params(u32 argc, char **argv, char **envp) { } + if (getenv("AFL_USE_LSAN")) { + cc_params[cc_par_cnt++] = "-fsanitize=leak"; + } + if (getenv("AFL_USE_CFISAN")) { if (!lto_mode) { @@ -914,6 +918,13 @@ static void edit_params(u32 argc, char **argv, char **envp) { } + if (getenv("AFL_USE_LSAN")) { + cc_params[cc_par_cnt++] = "-includesanitizer/lsan_interface.h"; + } + + cc_params[cc_par_cnt++] = + "-D__AFL_CHECK_LEAK()=__lsan_do_leak_check()"; + cc_params[cc_par_cnt++] = "-D__AFL_COVERAGE_START_OFF()=int __afl_selective_coverage_start_off = " "1;"; @@ -1740,7 +1751,8 @@ int main(int argc, char **argv, char **envp) { " AFL_USE_ASAN: activate address sanitizer\n" " AFL_USE_CFISAN: activate control flow sanitizer\n" " AFL_USE_MSAN: activate memory sanitizer\n" - " AFL_USE_UBSAN: activate undefined behaviour sanitizer\n"); + " AFL_USE_UBSAN: activate undefined behaviour sanitizer\n" + " AFL_USE_LSAN: activate leak-checker sanitizer\n"); if (have_gcc_plugin) SAYF( |