From 13a2c1ca78c47a4314e32badddf6c31c4229da7f Mon Sep 17 00:00:00 2001
From: Russ Cox <rsc@golang.org>
Date: Fri, 26 Sep 2014 13:48:30 -0400
Subject: cmd/go: display program name when reporting crash

Fix by atom (from CL 89190044), comment and test by me.

Fixes #6823.

LGTM=crawshaw
R=golang-codereviews, crawshaw
CC=0xe2.0x9a.0x9b, adg, golang-codereviews, iant, r
https://golang.org/cl/148180043
---
 src/cmd/ld/pobj.c | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'src/cmd/ld/pobj.c')

diff --git a/src/cmd/ld/pobj.c b/src/cmd/ld/pobj.c
index 54c5ef2472..63460df30a 100644
--- a/src/cmd/ld/pobj.c
+++ b/src/cmd/ld/pobj.c
@@ -45,6 +45,8 @@ char*	paramspace	= "FP";
 void
 main(int argc, char *argv[])
 {
+	int i;
+
 	linkarchinit();
 	ctxt = linknew(thelinkarch);
 	ctxt->thechar = thechar;
@@ -64,6 +66,13 @@ main(int argc, char *argv[])
 	INITENTRY = 0;
 	linkmode = LinkAuto;
 	
+	// For testing behavior of go command when tools crash.
+	// Undocumented, not in standard flag parser to avoid
+	// exposing in usage message.
+	for(i=1; i<argc; i++)
+		if(strcmp(argv[i], "-crash_for_testing") == 0)
+			*(volatile int*)0 = 0;
+	
 	if(thechar == '5' && ctxt->goarm == 5)
 		debug['F'] = 1;
 
-- 
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