commit fbfed49134bca038184dbc1a427e82647fc1f12e
author Dmitriy Vyukov <dvyukov@google.com> Wed Nov 09 23:11:48 2011 +0300
committer Dmitriy Vyukov <dvyukov@google.com> Wed Nov 09 23:11:48 2011 +0300
tree 63a64a5b3c1ff5b483371cab31d2807b7ad79e40
parent 98321731f2e09d71ea153e8c6ae8abdf6fa881bd

cgo: fix g0 stack guard
Fixes crash when cgo consumes more than 8K
of stack and makes a callback.

Fixes #1328.

R=golang-dev, rogpeppe, rsc
CC=golang-dev, mpimenov
https://golang.org/cl/5371042

misc/cgo/test/callback_c.c

diff --git a/misc/cgo/test/callback_c.c b/misc/cgo/test/callback_c.c
index 5983a5e..c296d70 100644
--- a/misc/cgo/test/callback_c.c
+++ b/misc/cgo/test/callback_c.c
@@ -8,5 +8,10 @@
 void
 callback(void *f)
 {
+	// use some stack space
+	volatile char data[64*1024];
+
+	data[0] = 0;
 	goCallback(f);
+        data[sizeof(data)-1] = 0;
 }