aarch64: blacklist gcc prior to 5.1

Linux aarch64 requires GCC 5.1 or better because prior versions perform
unsafe access to deallocated stack.

Some Linux distributions may have backported the fix, but it was never
released into earlier upstream gcc versions.

Link: https://lwn.net/Articles/842122/
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63293
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Change-Id: I72993e446f7f54f39d0f360273b68f194be8c13a

diff --git a/include/wrapper/compiler.h b/include/wrapper/compiler.h
index 4efe0cfa671fab25b6b283543512b25903668425..e0bd33f4ee860c52b5ba10a8eedcabb0eea3ae4e 100644 (file)
--- a/include/wrapper/compiler.h
+++ b/include/wrapper/compiler.h
@@ -25,6 +25,16 @@
 #   error Your gcc version produces clobbered frame accesses
 #  endif
 # endif
+
+/*
+ * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63293
+ */
+# ifdef __aarch64__
+#  if GCC_VERSION < 50100
+#   error Your gcc version performs unsafe access to deallocated stack
+#  endif
+# endif
+
 #endif
 
 /*