From: Ian Lance Taylor <ian@gcc.gnu.org>
Date: Wed, 31 Aug 2016 13:59:03 +0000 (+0000)
Subject: runtime: make gsignal stack at least SIGSTKSZ bytes
X-Git-Tag: basepoints/gcc-8~4813
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=fc4eaccf101f7dab11074ef9af9b2ca71ea3e6b0;p=thirdparty%2Fgcc.git

runtime: make gsignal stack at least SIGSTKSZ bytes

    The default stack size for the gsignal goroutine, 32K, is not enough on
    ia64.  Make sure that the stack size is at least SIGSTKSZ.

    Reviewed-on: https://go-review.googlesource.com/28224

From-SVN: r239894
---

diff --git a/gcc/go/gofrontend/MERGE b/gcc/go/gofrontend/MERGE
index 633dfcfdd8aa..71a9f5bcd5e7 100644
--- a/gcc/go/gofrontend/MERGE
+++ b/gcc/go/gofrontend/MERGE
@@ -1,4 +1,4 @@
-394486a1cec9bbb81216311ed153179d9fe1c2c5
+c8cf90f2daf62428ca6aa0b5674572cd99f25fe3
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.
diff --git a/libgo/runtime/runtime.c b/libgo/runtime/runtime.c
index c7d33bcef4c6..9abd096555d2 100644
--- a/libgo/runtime/runtime.c
+++ b/libgo/runtime/runtime.c
@@ -272,7 +272,14 @@ runtime_tickspersecond(void)
 void
 runtime_mpreinit(M *mp)
 {
-	mp->gsignal = runtime_malg(32*1024, (byte**)&mp->gsignalstack, &mp->gsignalstacksize);	// OS X wants >=8K, Linux >=2K
+	int32 stacksize = 32 * 1024;	// OS X wants >=8K, Linux >=2K
+
+#ifdef SIGSTKSZ
+	if(stacksize < SIGSTKSZ)
+		stacksize = SIGSTKSZ;
+#endif
+
+	mp->gsignal = runtime_malg(stacksize, (byte**)&mp->gsignalstack, &mp->gsignalstacksize);
 	mp->gsignal->m = mp;
 }