1 files changed, 9 insertions, 1 deletions
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp
index 721c39d..0040f79 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp
@@ -105,6 +105,10 @@ extern "C" {
     mach_msg_type_number_t *infoCnt);
 }
 
+// Weak symbol no-op when TSan is not linked
+SANITIZER_WEAK_ATTRIBUTE extern void __tsan_set_in_internal_write_call(
+    bool value) {}
+
 namespace __sanitizer {
 
 #include "sanitizer_syscall_generic.inc"
@@ -175,7 +179,11 @@ uptr internal_read(fd_t fd, void *buf, uptr count) {
 }
 
 uptr internal_write(fd_t fd, const void *buf, uptr count) {
-  return write(fd, buf, count);
+  // We need to disable interceptors when writing in TSan
+  __tsan_set_in_internal_write_call(true);
+  uptr res = write(fd, buf, count);
+  __tsan_set_in_internal_write_call(false);
+  return res;
 }
 
 uptr internal_stat(const char *path, void *buf) {