From 8fc67033914902065b6150fc6f0808b00dbe05b5 Mon Sep 17 00:00:00 2001
From: Adam Langley <agl@golang.org>
Date: Fri, 8 Apr 2011 15:43:19 -0400
Subject: [PATCH] big: don't crash when printing nil ints

"%#v" of a structure with *big.Int's tends to crash a lot otherwise.

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/4382044
---
 src/pkg/big/int.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/pkg/big/int.go b/src/pkg/big/int.go
index ecd70e03ef..f1ea7b1c2e 100755
--- a/src/pkg/big/int.go
+++ b/src/pkg/big/int.go
@@ -337,6 +337,10 @@ func fmtbase(ch int) int {
 // 'x' (hexadecimal).
 //
 func (x *Int) Format(s fmt.State, ch int) {
+	if x == nil {
+		fmt.Fprint(s, "<nil>")
+		return
+	}
 	if x.neg {
 		fmt.Fprint(s, "-")
 	}
-- 
2.48.1