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-rw-r--r--llvm/lib/Fuzzer/FuzzerLoop.cpp14
1 files changed, 12 insertions, 2 deletions
diff --git a/llvm/lib/Fuzzer/FuzzerLoop.cpp b/llvm/lib/Fuzzer/FuzzerLoop.cpp
index 6b19a15..0adbc89 100644
--- a/llvm/lib/Fuzzer/FuzzerLoop.cpp
+++ b/llvm/lib/Fuzzer/FuzzerLoop.cpp
@@ -437,9 +437,19 @@ struct MallocFreeTracer {
static thread_local MallocFreeTracer AllocTracer;
+// FIXME: The hooks only count on Linux because
+// on Mac OSX calls to malloc are intercepted before
+// thread local storage is initialised leading to
+// crashes when accessing ``AllocTracer``.
extern "C" {
-void __sanitizer_malloc_hook(void *ptr, size_t size) { AllocTracer.Mallocs++; }
-void __sanitizer_free_hook(void *ptr) { AllocTracer.Frees++; }
+void __sanitizer_malloc_hook(void *ptr, size_t size) {
+ if (!LIBFUZZER_APPLE)
+ AllocTracer.Mallocs++;
+}
+void __sanitizer_free_hook(void *ptr) {
+ if (!LIBFUZZER_APPLE)
+ AllocTracer.Frees++;
+}
} // extern "C"
void Fuzzer::ExecuteCallback(const uint8_t *Data, size_t Size) {