Re: gdb/2450: gdb core dump in user-defined stack print command

[Daniel Jacobowitz <drow@false.org>]

The following reply was made to PR gdb/2450; it has been noted by GNATS.

From: Daniel Jacobowitz <drow@false.org>
To: skip@pobox.com
Cc: gdb-gnats@sources.redhat.com
Subject: Re: gdb/2450: gdb core dump in user-defined stack print command
Date: Fri, 2 May 2008 12:39:06 -0400

 On Fri, May 02, 2008 at 01:17:16PM -0000, skip@pobox.com wrote:
 > I can define the command, but if I try to execute it
 > gdb gets an apparent assertion error and dumps core.
 > Here's the gdb backtrace:
 > 
 > #0  0xfede5f85 in _lwp_kill () from /lib/libc.so.1
 > #1  0xfede2dfe in thr_kill () from /lib/libc.so.1
 > #2  0xfed911cb in raise () from /lib/libc.so.1
 > #3  0xfed715e9 in abort () from /lib/libc.so.1
 > #4  0x0808d62b in internal_vproblem (problem=0x82f04e0,
 >     file=0x828b9cf "../../gdb/regcache.c", line=<value optimized out>,
 >     fmt=0x828b9b4 "%s: Assertion `%s' failed.",
 >     ap=0x8046a6c "G\036%\bX\237+\b2") at ../../gdb/utils.c:794
 > #5  0x0808af93 in internal_verror (file=0x828b9cf "../../gdb/regcache.c",
 >     line=164, fmt=0x828b9b4 "%s: Assertion `%s' failed.",
 >     ap=0x8046a6c "G\036%\bX\237+\b2") at ../../gdb/utils.c:809
 > #6  0x0808afc9 in internal_error (file=0x828b9cf "../../gdb/regcache.c",
 >     line=164, string=0x828b9b4 "%s: Assertion `%s' failed.")
 >     at ../../gdb/utils.c:818
 > #7  0x080e2067 in register_type (gdbarch=0x833e370, regnum=50)
 >     at ../../gdb/regcache.c:164
 > #8  0x080ecaaa in evaluate_subexp_standard (expect_type=0x0, exp=0x11461640,
 >     pos=0x80473c4, noside=EVAL_AVOID_SIDE_EFFECTS) at ../../gdb/eval.c:511
 
 If this still happens in GDB 6.8, could you try "set debug expression
 1" first?
 
 -- 
 Daniel Jacobowitz
 CodeSourcery