Index: lib/rtl/srw.c
===================================================================
--- lib/rtl/srw.c	(revision 37688)
+++ lib/rtl/srw.c	(working copy)
@@ -44,7 +44,7 @@
                              RTL_SRWLOCK_SHARED | RTL_SRWLOCK_CONTENTION_LOCK)
 #define RTL_SRWLOCK_BITS    4
 
-#if defined(__GNUC__) && !defined(_M_AMD64)
+#if (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__ < 40300) && !defined(_M_AMD64)
 /* This macro will cause the code to assert if compiled with a buggy
    version of GCC that doesn't align the wait blocks properly on the stack! */
 #define ASSERT_SRW_WAITBLOCK(ptr) \