From 2ba3cfa1607c36613f3b30fb1ae4ec530245ce64 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Fri, 10 Jun 2016 10:46:05 +0200
Subject: malloc: Remove __malloc_initialize_hook from the API [BZ #19564]

__malloc_initialize_hook is interposed by application code, so
the usual approach to define a compatibility symbol does not work.
This commit adds a new mechanism based on #pragma GCC poison in
<stdc-predef.h>.
---
 include/stdc-predef.h | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'include/stdc-predef.h')

diff --git a/include/stdc-predef.h b/include/stdc-predef.h
index f9f7f731d1..52cf8d10a0 100644
--- a/include/stdc-predef.h
+++ b/include/stdc-predef.h
@@ -57,4 +57,11 @@
 /* We do not support C11 <threads.h>.  */
 #define __STDC_NO_THREADS__		1
 
+/* Remove symbols from the API which can be interposed.  */
+#if defined (__GNUC__)
+# if __GNUC__ >= 4
+#  pragma GCC poison __malloc_initialize_hook
+# endif	 /* __GNUC__ >= 4 */
+#endif	/* __GNUC__ */
+
 #endif
-- 
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