From: Robert Griesemer <gri@golang.org>
Date: Tue, 15 Sep 2015 18:16:58 +0000 (-0700)
Subject: src/cmd/compile/internal/gc: fix type assertion in overflow check
X-Git-Tag: go1.6beta1~1071
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=dace9397b10e85db15c4760eb283ca43855d87d2;p=gostls13.git

src/cmd/compile/internal/gc: fix type assertion in overflow check

Fixes #11600.

Change-Id: I8871d4e525168fed35115855483a237bbd6e5445
Reviewed-on: https://go-review.googlesource.com/14596
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
---

diff --git a/src/cmd/compile/internal/gc/const.go b/src/cmd/compile/internal/gc/const.go
index de23190678..a6428ac427 100644
--- a/src/cmd/compile/internal/gc/const.go
+++ b/src/cmd/compile/internal/gc/const.go
@@ -434,19 +434,8 @@ func overflow(v Val, t *Type) {
 		return
 	}
 
-	if !doesoverflow(v, t) {
-		return
-	}
-
-	switch v.Ctype() {
-	case CTINT, CTRUNE:
-		Yyerror("constant %v overflows %v", v.U.(*Mpint), t)
-
-	case CTFLT:
-		Yyerror("constant %v overflows %v", Fconv(v.U.(*Mpflt), obj.FmtSharp), t)
-
-	case CTCPLX:
-		Yyerror("constant %v overflows %v", Fconv(v.U.(*Mpflt), obj.FmtSharp), t)
+	if doesoverflow(v, t) {
+		Yyerror("constant %s overflows %v", Vconv(v, 0), t)
 	}
 }