misc/82894: lang/ruby18: -fomit-frame-pointer causes segfault

[Kris Kennaway]

The following reply was made to PR misc/82894; it has been noted by GNATS.

From: Kris Kennaway <kris at obsecurity.org>
To: Kyryll A Mirnenko <mirya at matrix.ua>
Cc: freebsd-gnats-submit at FreeBSD.org
Subject: Re: misc/82894: lang/ruby18: -fomit-frame-pointer causes segfault
Date: Sat, 2 Jul 2005 14:15:24 -0400

 On Sat, Jul 02, 2005 at 04:25:35PM +0000, Kyryll A Mirnenko wrote:
 > 
 > >Number:         82894
 > >Category:       misc
 > >Synopsis:       lang/ruby18: -fomit-frame-pointer causes segfault
 > >Confidential:   no
 > >Severity:       non-critical
 > >Priority:       low
 > >Responsible:    freebsd-bugs
 > >State:          open
 > >Quarter:        
 > >Keywords:       
 > >Date-Required:
 > >Class:          sw-bug
 > >Submitter-Id:   current-users
 > >Arrival-Date:   Sat Jul 02 16:30:15 GMT 2005
 > >Closed-Date:
 > >Last-Modified:
 > >Originator:     Kyryll A Mirnenko
 > >Release:        5.4p3
 > >Organization:
 > >Environment:
 > FreeBSD localhost 5.4-RELEASE-p3 FreeBSD 5.4-RELEASE-p3 #42: Thu Jun 30 23:16:44 EEST 2005     root at localhost:/usr/src/sys/i386/compile/MY  i386
 > >Description:
 >       When building lang/ruby18 with -fomit-frame-pointer in CFLAGS building aborts due to ruby segfault:
 > 
 > ..
 > cc -shared -Wl,-soname,libruby18.so.18  array.o  bignum.o  class.o  compar.o  dir.o  dln.o  enum.o  error.o  eval.o  file.o  gc.o  hash.o  inits.o  io.o  marshal.o  math.o  numeric.o  object.o  pack.o  parse.o  process.o  prec.o  random.o  range.o  re.o  regex.o  ruby.o  signal.o  sprintf.o  st.o  string.o  struct.o  time.o  util.o  variable.o  version.o   dmyext.o -lcrypt -lm -pthread  -o libruby18.so.18
 > ./lib/mkmf.rb:314: [BUG] Segmentation fault
 > ruby 1.8.2 (2004-12-25) [i386-freebsd5]
 > 
 > Abort trap (core dumped)
 > *** Error code 134
 > 1 error
 > *** Error code 2
 > 
 > Removing the cc option resolves the problem. Tested for
 > CFLAGS=-O3 -pipe -march=pentium2 (ok)
 > CFLAGS=-O3 -pipe -march=pentium2 -fomit-frame-pointer (fails)
 > >How-To-Repeat:
 >       try building lang/ruby18 with -fomit-frame-pointer in CFLAGS
 > >Fix:
 >       Suggest checking CFALGS in Makefile & warn if buggy cc flag is found
 
 There's already a warning in make.conf and the manpage, so this is not
 necessary.  We assume that people who choose to use nonstandard CFLAGS
 know what they're doing.
 
 Kris