Fix Possible Control flow issues (DEADCODE)

Coverity Scan says `Execution cannot reach this statement: "poison_object(v);"`,
so do nothing when `ptr` is always 0 without address_sanitizer.

1 files changed, 8 insertions, 0 deletions

diff --git a/internal.h b/internal.h
index e986098a56..fcaffa26be 100644
--- a/internal.h
+++ b/internal.h
@@ -155,6 +155,14 @@ asan_poison_object(VALUE obj)
     asan_poison_memory_region(ptr, SIZEOF_VALUE);
 }
 
+#if !__has_feature(address_sanitizer)
+#define asan_poison_object_if(ptr, obj) ((void)(ptr), (void)(obj))
+#else
+#define asan_poison_object_if(ptr, obj) do { \
+        if (ptr) asan_poison_object(obj); \
+    } while (0)
+#endif
+
 /*!
  * This function predicates if the given object is fully addressable or not.
  *