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>.

1 files changed, 3 insertions, 0 deletions

diff --git a/NEWS b/NEWS
index 2341697..9d6ac56 100644
--- a/NEWS
+++ b/NEWS
@@ -33,6 +33,9 @@ Version 2.24
   group: files [SUCCESS=merge] nis
   Implemented by Stephen Gallagher (Red Hat).
 
+* The deprecated __malloc_initialize_hook variable has been removed from the
+  API.
+
 Security related changes:
 
 * An unnecessary stack copy in _nss_dns_getnetbyname_r was removed.  It