[compiler-rt][darwin] check for strcmp to test interceptors instead of pthread_create
If `pthread_create` is not available on a platform, we won't be able to check if interceptors work. Use `strcmp` instead.
Reviewed By: yln
Differential Revision: https://reviews.llvm.org/D116989
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp
index a2fc310..b15bad7 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp
@@ -1050,13 +1050,13 @@
RAW_CHECK("execv failed" && 0);
}
- // Verify that interceptors really work. We'll use dlsym to locate
- // "pthread_create", if interceptors are working, it should really point to
- // "wrap_pthread_create" within our own dylib.
- Dl_info info_pthread_create;
- void *dlopen_addr = dlsym(RTLD_DEFAULT, "pthread_create");
- RAW_CHECK(dladdr(dlopen_addr, &info_pthread_create));
- if (internal_strcmp(info.dli_fname, info_pthread_create.dli_fname) != 0) {
+ // Verify that interceptors really work. We'll use dlsym to locate
+ // "strcmp", if interceptors are working, it should really point to
+ // "wrap_strcmp" within our own dylib.
+ Dl_info info_strcmp;
+ void *dlopen_addr = dlsym(RTLD_DEFAULT, "strcmp");
+ RAW_CHECK(dladdr(dlopen_addr, &info_strcmp));
+ if (internal_strcmp(info.dli_fname, info_strcmp.dli_fname) != 0) {
Report(
"ERROR: Interceptors are not working. This may be because %s is "
"loaded too late (e.g. via dlopen). Please launch the executable "
