From: Ivan Maidanski <ivmai@mail.ru>
Date: Wed, 7 Dec 2016 07:49:53 +0000 (+0300)
Subject: Enable mprotect-based incremental GC for Win64 (GCC)
X-Git-Tag: v8.0.0~1003
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b88b91895413255ec8e4fe46db7261c7978a6ed0;p=gc

Enable mprotect-based incremental GC for Win64 (GCC)

* include/private/gcconfig.h [X86_64 && MSWIN32 && __GNUC__]
(MPROTECT_VDB): Define for GCC 4.7+ too; update comment.
---

diff --git a/include/private/gcconfig.h b/include/private/gcconfig.h
index 8b26ae27..1a469d54 100644
--- a/include/private/gcconfig.h
+++ b/include/private/gcconfig.h
@@ -2548,9 +2548,10 @@
 #       define OS_TYPE "MSWIN32"
                 /* STACKBOTTOM and DATASTART are handled specially in   */
                 /* os_dep.c.                                            */
-#       if !defined(__GNUC__) || defined(__INTEL_COMPILER)
-          /* GCC does not currently support SetUnhandledExceptionFilter */
-          /* (does not generate SEH unwinding information) on x64.      */
+#       if !defined(__GNUC__) || defined(__INTEL_COMPILER) \
+           || __GNUC__ >= 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7)
+          /* Older GCC has not supported SetUnhandledExceptionFilter    */
+          /* properly on x64 (e.g. SEH unwinding information missed).   */
 #         define MPROTECT_VDB
 #       endif
 #       define GWW_VDB