From 6111dc4e71ffd843ac8029df4fd67d32689f8e36 Mon Sep 17 00:00:00 2001
From: Ian Lance Taylor <iant@golang.org>
Date: Tue, 21 Jan 2014 06:12:54 -0800
Subject: liblink: check for symgrow size too large

Many calls to symgrow pass a vlong value.  Change the function
to not implicitly truncate, and to instead give an error if
the value is too large.

R=golang-codereviews, gobot, rsc
CC=golang-codereviews
https://golang.org/cl/54010043
---
 src/liblink/data.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'src/liblink/data.c')

diff --git a/src/liblink/data.c b/src/liblink/data.c
index 9a481b6e5e..58d6d6b5e8 100644
--- a/src/liblink/data.c
+++ b/src/liblink/data.c
@@ -41,10 +41,16 @@ mangle(char *file)
 }
 
 void
-symgrow(Link *ctxt, LSym *s, int32 siz)
+symgrow(Link *ctxt, LSym *s, vlong lsiz)
 {
+	int32 siz;
+
 	USED(ctxt);
 
+	siz = (int32)lsiz;
+	if((vlong)siz != lsiz)
+		sysfatal("symgrow size %lld too long", lsiz);
+
 	if(s->np >= siz)
 		return;
 
-- 
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