From e1da4dc2dd55926c9d7140f830a5338512279b3f Mon Sep 17 00:00:00 2001
From: Peter Wu <peter@lekensteyn.nl>
Date: Mon, 16 Feb 2015 00:22:10 +0100
Subject: [PATCH] CheckStructHasMember: fix null deref warning (#15413)

Clang Static Analyzer is so smart that it reports a defect when this
intended null-deref is encountered.  Use sizeof instead which has no
runtime effects.
---
 Modules/CheckStructHasMember.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Modules/CheckStructHasMember.cmake b/Modules/CheckStructHasMember.cmake
index de31d2ce2..6c1520592 100644
--- a/Modules/CheckStructHasMember.cmake
+++ b/Modules/CheckStructHasMember.cmake
@@ -69,7 +69,7 @@ macro (CHECK_STRUCT_HAS_MEMBER _STRUCT _MEMBER _HEADER _RESULT)
 ${_INCLUDE_FILES}
 int main()
 {
-   (void)((${_STRUCT} *)0)->${_MEMBER};
+   (void)sizeof(((${_STRUCT} *)0)->${_MEMBER});
    return 0;
 }
 ")