alloc.c (mark_memory): Guard the "no_address_safety_analysis" function

attribute, so we only use it if it exists in the compiler.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/alloc.c b/src/alloc.c
index 89f2c5dbed1..ac200254b8c 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -4641,12 +4641,14 @@ mark_maybe_pointer (void *p)
 
 static void
 mark_memory (void *start, void *end)
-#ifdef __clang__
+#if defined (__clang__) && defined (__has_feature)
+#if __has_feature(address_sanitizer)
   /* Do not allow -faddress-sanitizer to check this function, since it
      crosses the function stack boundary, and thus would yield many
      false positives. */
   __attribute__((no_address_safety_analysis))
 #endif
+#endif
 {
   void **pp;
   int i;