Further reduce parse depth limit in mbstring fuzzer

Depth limit of 1024 still causes optimize_node stack overflows
when running under asan.

diff --git a/sapi/fuzzer/fuzzer-mbstring.c b/sapi/fuzzer/fuzzer-mbstring.c
index 5821024ec39a4b391a8f56c4020c0c08db679458..9c00761ad0aff95ceeb3531fb47e9c28ebbdc696 100644 (file)
--- a/sapi/fuzzer/fuzzer-mbstring.c
+++ b/sapi/fuzzer/fuzzer-mbstring.c
@@ -69,7 +69,7 @@ int LLVMFuzzerInitialize(int *argc, char ***argv) {
        fuzzer_init_php();
 
        /* The default parse depth limit allows stack overflows under asan. */
-       onig_set_parse_depth_limit(1024);
+       onig_set_parse_depth_limit(512);
 
        /* fuzzer_shutdown_php(); */
        return 0;