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Date: Fri, 01 Aug 2008 11:05:32 -0700
From: Brian Dessent <brian AT dessent DOT net>
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To: Steve Waldo <steven DOT j DOT waldo AT seagate DOT com>
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Subject: Re: seg fault produces stackdump with no stack trace
References: <loom DOT 20080801T151340-446 AT post DOT gmane DOT org> <loom DOT 20080801T174446-165 AT post DOT gmane DOT org>
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Steve Waldo wrote:

> Even the debugger didn't know where it was anymore! It's obvious in this case
> why it went off in the weeds, but I would have thought the stack would still
> be accessible.

Well of *course* the debugger doesn't know what 0x00000000 is because
that is not a valid program location.  But it can give you a backtrace,
you're just not asking for it:

$ gdb --quiet a.exe
(gdb) r
[New thread 2912.0x544]
[New thread 2912.0xaf0]

Program received signal SIGSEGV, Segmentation fault.
0x00000000 in ?? ()
(gdb) bt
#0  0x00000000 in ?? ()
#1  0x00401052 in letsCrash () at tc.c:4
#2  0x00401083 in main () at tc.c:9
(gdb)

Brian

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