From f861c7f61b9503bb01d2781487c267f8c320d42d Mon Sep 17 00:00:00 2001
From: Ian Lance Taylor <iant@golang.org>
Date: Fri, 21 Aug 2009 17:41:18 -0700
Subject: [PATCH] If the compiler dumps core, bash will print a useless error
 message with the full path of the errchk script.  Catch that by wrapping the
 if statement which invokes the compiler in a subshell.  Use the $TMPOUT file
 as a flag to let the main shell know whether the subshell ran.  Since the
 compiler stdout and stderr are redirected, if the if statement produces any
 output, then the compiler crashed, and we report that.

R=r,rsc
DELTA=14  (11 added, 1 deleted, 2 changed)
OCL=33690
CL=33692
---
 test/errchk | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/test/errchk b/test/errchk
index 00694c256f..c1183868f3 100755
--- a/test/errchk
+++ b/test/errchk
@@ -34,11 +34,21 @@ rm -f $TMPOUT $TMPERR $TMPALL $TMPTMP $TMPBUG
 
 trap "rm -f $TMPOUT $TMPERR $TMPALL $TMPTMP $TMPBUG" 0 1 2 3 14 15
 
-if $* >$TMPOUT 2>$TMPERR; then
-  echo 1>&2 "BUG: errchk: command succeeded unexpectedly"
+(if $* >$TMPOUT 2>$TMPERR; then
+   echo 1>&4 "BUG: errchk: command succeeded unexpectedly"
+   cat 1>&3 $TMPOUT
+   cat 1>&4 $TMPERR
+   rm -f $TMPOUT $TMPERR
+ fi) 3>&1 4>&2 >$TMPTMP 2>&1
+
+if ! test -f $TMPOUT; then
+  exit 0
+fi
+
+if test -s $TMPTMP; then
+  echo 1>&2 BUG: errchk: compiler crashed
   cat $TMPOUT
   cat 1>&2 $TMPERR
-  rm -f $TMPOUT $TMPERR
   exit 0
 fi
 
-- 
2.48.1