From: Christopher Wedgwood <cw@f00f.org>
Date: Thu, 3 Dec 2009 20:46:34 +0000 (-0800)
Subject: gc: Allow allow data types up to 1GB
X-Git-Tag: weekly.2009-12-07~46
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=7e7008fa5e96cf0418b71b5b408ea2a69b522221;p=gostls13.git

gc: Allow allow data types up to 1GB

R=rsc
https://golang.org/cl/164095
---

diff --git a/src/cmd/gc/gen.c b/src/cmd/gc/gen.c
index 475058fa28..56dd752fb7 100644
--- a/src/cmd/gc/gen.c
+++ b/src/cmd/gc/gen.c
@@ -52,7 +52,7 @@ allocparams(void)
 			continue;
 		dowidth(n->type);
 		w = n->type->width;
-		if(w >= 100000000)
+		if(w >= MAXWIDTH)
 			fatal("bad width");
 		stksize += w;
 		stksize = rnd(stksize, w);
diff --git a/src/cmd/gc/go.h b/src/cmd/gc/go.h
index 87362156d3..5df0c5be85 100644
--- a/src/cmd/gc/go.h
+++ b/src/cmd/gc/go.h
@@ -53,7 +53,8 @@ enum
 	AINTER,
 	ANILINTER,
 
-	BADWIDTH	= -1000000000
+	BADWIDTH	= -1000000000,
+	MAXWIDTH        = 1<<30
 };
 
 /*
diff --git a/src/cmd/gc/subr.c b/src/cmd/gc/subr.c
index 6b73570e52..407dea023f 100644
--- a/src/cmd/gc/subr.c
+++ b/src/cmd/gc/subr.c
@@ -2431,7 +2431,7 @@ setmaxarg(Type *t)
 
 	dowidth(t);
 	w = t->argwid;
-	if(t->argwid >= 100000000)
+	if(t->argwid >= MAXWIDTH)
 		fatal("bad argwid %T", t);
 	if(w > maxarg)
 		maxarg = w;