[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/libc/glibc/glibc-2.22/sysdeps/generic/malloc-sysdep.h b/ap/libc/glibc/glibc-2.22/sysdeps/generic/malloc-sysdep.h
new file mode 100644
index 0000000..a6f6489
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/sysdeps/generic/malloc-sysdep.h
@@ -0,0 +1,28 @@
+/* System-specific malloc support functions. Generic version.
+ Copyright (C) 2012-2015 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <stdbool.h>
+#include <unistd.h>
+
+/* Force an unmap when the heap shrinks in a secure exec. This ensures that
+ the old data pages immediately cease to be accessible. */
+static inline bool
+check_may_shrink_heap (void)
+{
+ return __libc_enable_secure;
+}