gas --statistics segfault

[Dasn Clainst]

On Sun, Feb 05, 2006 at 08:09:35AM -0800, H. J. Lu wrote:
> On Sun, Feb 05, 2006 at 09:02:19PM +0800, Dasn Clainst wrote:
> > 
> > Hi, guys.
> > 
> > In my box, 'as --statistics' sometimes segfault.
> > -------------------------------------------------------------
> > $ uname -msr
> > OpenBSD 3.8 i386
> > $ echo "main(){}" > p.c
> > $ cat -n test.sh
> >  1  #!/bin/sh
> >  2  count=100;failed=0;i=0
> >  3  cc -S p.c -o p.s
> >  4  while [ $i -lt $count ]
> >  5  do
> >  6  	./as-new --statistics p.s > /dev/null 2>&1 
> >  7  	if [ $? -ne 0 ]; then
> >  8  		let failed=failed+1
> >  9  	fi
> > 10  	let i=i+1
> > 11  done
> > 12  echo "$failed/$count failed."
> > 13  rm -rf as-new.core a.out
> > $ sh test.sh
> > 100/100 failed.
> 
> You were making it harder for people to reproduce it. Please open a bug
> report at
> 
> http://www.sourceware.org/bugzilla/
> 
> with a testcase.
> 
> 
> H.J.

Usually, --statistics will cause segfault, so no need testcase. The
test.sh is used to find how often segfaults will produce (usually 100%,
sometimes 50%). IMHO, the 'bfd_close' free all frch_seg in frchain_root
before 'subsegs_print_statistics' access them.