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To: Kevin Nomura <nomura@netapp.com>
Cc: gdb@sources.redhat.com
Subject: Re: problem printing enums as integers with dwarf2
References: <20031107232037.GK4286@bughouse.netapp.com>
From: Jim Blandy <jimb@redhat.com>
Date: Mon, 10 Nov 2003 23:34:00 -0000
In-Reply-To: <20031107232037.GK4286@bughouse.netapp.com>
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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