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Re: problem printing enums as integers with dwarf2
- From: Kevin Nomura <nomura at netapp dot com>
- To: Jim Blandy <jimb at redhat dot com>
- Cc: Kevin Nomura <nomura at netapp dot com>, gdb at sources dot redhat dot com
- Date: Mon, 10 Nov 2003 16:05:06 -0800
- Subject: Re: problem printing enums as integers with dwarf2
- References: <20031107232037.GK4286@bughouse.netapp.com> <vt2n0b3pzos.fsf@zenia.home>
Thanks for looking at it!
Kevin
Date: 10 Nov 2003 23:58:00 -0000
To: nomura@netapp.com
From: gdb-gnats@sources.redhat.com
Subject: Re: exp/1445: C enum prints 129 as -127 with dwarf-2
Reply-To: gdb-gnats@sources.redhat.com, nobody@sources.redhat.com
In-Reply-To: Your message of 10 Nov 2003 23:48:04 -0000
<20031110234804.11729.qmail@sources.redhat.com>
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Thank you very much for your problem report.
It has the internal identification `exp/1445'.
The individual assigned to look at your
report is: unassigned.
>Category: exp
>Responsible: unassigned
>Synopsis: C enum prints 129 as -127 with dwarf-2
>Arrival-Date: Mon Nov 10 23:58:00 UTC 2003
On Mon, Nov 10, 2003 at 06:32:35PM -0500, Jim Blandy wrote:
>
> Not known to me, at least. Please go ahead and file a bug for this,
> and I'll take it.
>
> Kevin Nomura <nomura@netapp.com> writes:
> > Before filing a bug I'd like to check if I'm missing
> > something obvious. A C enum is defined with elements
> > x0, x1, ..., x999 starting at 0 and incrementing naturally
> > with no "=" reassignments. It is compiled on Linux redhat 8
> > (for example) which uses dwarf2 by default: gcc -g enum.c
> >
> > x129 is printed as an integer:
> >
> > (gdb) p/d x129
> > $2 = -127
> >
> > I expected 129.
> >
> > Compile with stabs explicitly and get the expected behaviour:
> >
> > [siml4]$ gcc -gstabs enum.c
> > [siml4]$ gdb a.out
> > GNU gdb Red Hat Linux (5.2.1-4)
> > Copyright 2002 Free Software Foundation, Inc.
> > GDB is free software, covered by the GNU General Public License, and you are
> > welcome to change it and/or distribute copies of it under certain conditions.
> > Type "show copying" to see the conditions.
> > There is absolutely no warranty for GDB. Type "show warranty" for details.
> > This GDB was configured as "i386-redhat-linux"...
> > (gdb) p x129
> > $1 = x129
> > (gdb) p/d x129
> > $2 = 129
> > (gdb)
> >
> > Here is a testcase generator in perl to declare the 1000 element enum.
> >
> >
> >
> > #!/usr/bin/perl -w
> > use strict
> >
> > print "enum e {\n";
> >
> > for ($i=0; $i<1000; $i++) { printf "\tx%d,\n", $i }
> > print <<EOF;
> > };
> >
> > main()
> > {
> > printf ("%d\\n", x129);
> > }
> > EOF