From: Keith Randall <khr@golang.org>
Date: Wed, 24 Jun 2015 14:23:40 +0000 (-0700)
Subject: cmd/compile/internal/gc: make sure nonzero-sized objects have nonzero alignment
X-Git-Tag: go1.5beta1~127
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=dbe9ab69d946be2c324430c8ed7717276780b533;p=gostls13.git

cmd/compile/internal/gc: make sure nonzero-sized objects have nonzero alignment

See issue #11354.

Change-Id: I6817d499e6c02e4a9c83f80bc66a2bee368a69ec
Reviewed-on: https://go-review.googlesource.com/11406
Reviewed-by: Russ Cox <rsc@golang.org>
---

diff --git a/src/cmd/compile/internal/gc/align.go b/src/cmd/compile/internal/gc/align.go
index 741c5dd76c..0fc3c2b97c 100644
--- a/src/cmd/compile/internal/gc/align.go
+++ b/src/cmd/compile/internal/gc/align.go
@@ -119,6 +119,10 @@ func dowidth(t *Type) {
 	}
 
 	if t.Width > 0 {
+		if t.Align == 0 {
+			// See issue 11354
+			Fatal("zero alignment with nonzero size %v", t)
+		}
 		return
 	}