1 files changed, 12 insertions, 0 deletions
diff --git a/src/afl-gcc.c b/src/afl-gcc.c
index e46fe5cd..5ead32fb 100644
--- a/src/afl-gcc.c
+++ b/src/afl-gcc.c
@@ -282,6 +282,18 @@ static void edit_params(u32 argc, char** argv) {
 
   }
 
+  if (!asan_set) {
+
+    if (getenv("AFL_USE_UBSAN")) {
+
+      cc_params[cc_par_cnt++] = "-fsanitize=undefined";
+      cc_params[cc_par_cnt++] = "-fsanitize-undefined-trap-on-error";
+      cc_params[cc_par_cnt++] = "-fno-sanitize-recover=all";
+
+    }
+
+  }
+
 #ifdef USEMMAP
   cc_params[cc_par_cnt++] = "-lrt";
 #endif