gc: Allow allow data types up to 1GB

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

gc: Allow allow data types up to 1GB
R=rsc https://golang.org/cl/164095
7e7008fa · Christopher Wedgwood · Russ Cox · 6db683fe · 7e7008fa · 7e7008fa
Commit 7e7008fa authored Dec 03, 2009 by Christopher Wedgwood Committed by Russ Cox Dec 03, 2009
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Showing with 4 additions and 3 deletions

src/cmd/gc/gen.c src/cmd/gc/gen.c +1 -1

src/cmd/gc/go.h src/cmd/gc/go.h +2 -1

src/cmd/gc/subr.c src/cmd/gc/subr.c +1 -1

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--- 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);

--- 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
 };

 /*

--- 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;