From: Keith Randall <khr@golang.org>
Date: Tue, 29 Jul 2014 21:38:08 +0000 (-0700)
Subject: cmd/gc: don't allow escaping arguments in the runtime package.
X-Git-Tag: go1.4beta1~993
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=d2204e6c0ee18d9a1728e01d233d03062936961c;p=gostls13.git

cmd/gc: don't allow escaping arguments in the runtime package.

This is a case that was missed in https://golang.org/cl/105280047/

LGTM=bradfitz
R=golang-codereviews, bradfitz
CC=golang-codereviews
https://golang.org/cl/120910043
---

diff --git a/src/cmd/gc/walk.c b/src/cmd/gc/walk.c
index 41d49f57b3..eb9ce11316 100644
--- a/src/cmd/gc/walk.c
+++ b/src/cmd/gc/walk.c
@@ -2356,6 +2356,8 @@ paramstoheap(Type **argin, int out)
 			continue;
 
 		// generate allocation & copying code
+		if(compiling_runtime)
+			fatal("%N escapes to heap, not allowed in runtime.", v);
 		if(v->alloc == nil)
 			v->alloc = callnew(v->type);
 		nn = list(nn, nod(OAS, v->heapaddr, v->alloc));