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Date: Fri, 12 Aug 2022 10:11:51 +1000
From: Tony Cook <tony@develop-help.com>
To: cygwin@cygwin.com
Subject: Re: crash in newlocale()
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On Thu, Aug 11, 2022 at 09:13:21AM -0400, Ken Brown wrote:
> On 8/10/2022 9:29 PM, Tony Cook wrote:
> > While I get a SEGV from miniperl, a simple reproducer returns a
> > SIGTRAP:
> > 
> > tony@enceladus ~/dev/perl/git
> > $ cat newlocale-test.c
> > #include <locale.h>
> > #include <stdio.h>
> > 
> > int main() {
> >    locale_t st = newlocale(LC_ALL_MASK, "C", (locale_t)0);
> > 
> >    locale_t st2 = newlocale(LC_CTYPE_MASK, "en_US.UTF-8", st);
> >    printf("Done\n");
> >    return 0;
> > }
> > tony@enceladus ~/dev/perl/git
> > $ gcc -onewlocale-test -g newlocale-test.c
> > 
> > tony@enceladus ~/dev/perl/git
> > $ gdb ./newlocale-test.exe
> > GNU gdb (GDB) (Cygwin 11.2-1) 11.2
> [...]
> > Reading symbols from ./newlocale-test.exe...
> > (gdb) r
> > Starting program: /home/tony/dev/perl/git/newlocale-test.exe
> > [New Thread 9176.0x3a8c]
> > [New Thread 9176.0x2014]
> > [New Thread 9176.0x2bc4]
> > [Thread 9176.0x2014 exited with code 3221225477]
> > [Thread 9176.0x3a8c exited with code 3221225477]
> > [Thread 9176.0x2bc4 exited with code 3221225477]
> > 
> > Program terminated with signal SIGTRAP, Trace/breakpoint trap.
> > The program no longer exists.
> 
> I can't explain the SIGTRAP (but you'll find a lot of information if you
> search the internet).  But I don't think it necessarily indicates a problem
> with newlocale.  What happens if you just run your test program normally,
> not under gdb?  It works fine for me:
> 
> $ ./newlocale-test.exe
> 
> $ echo $?
> 0

Where is the "Done"?

Tony