From: Jeff Johnston <jjohnstn@redhat.com>
To: Daniel Jacobowitz <drow@mvista.com>
Cc: David Carlton <carlton@kealia.com>, gdb <gdb@sources.redhat.com>
Subject: Re: gdb.base/pending.exp failures
Date: Thu, 05 Feb 2004 01:03:00 -0000 [thread overview]
Message-ID: <4021965F.2010902@redhat.com> (raw)
In-Reply-To: <20040205002140.GA29659@nevyn.them.org>
Daniel Jacobowitz wrote:
>Just a note of probable-cause: Jeff, on which platforms did you test
>this testcase? I bet it wasn't i386-linux.
>
>
You're right. I tested ia64, not i386.
>On Wed, Feb 04, 2004 at 04:01:21PM -0800, David Carlton wrote:
>
>
>>(gdb) break pendfunc1
>>
>>Breakpoint 1 at 0x804839c
>>
>>(gdb) FAIL: gdb.base/pending.exp: set pending breakpoint
>>
>>
>
>This function is in a shared library that hasn't been loaded yet.
>However, on i386-linux (and many other platforms), the call will go
>through a PLT entry, and the entry in the application's symbol table
>will appear as an SHN_UNDEF symbol with a non-zero address pointing at
>the PLT entry. GDB will re-resolve the breakpoint after shared
>libraries have been loaded. This is already-existing functionality.
>
>If you don't want to use dlopen in the test, try setting breakpoints on
>a function not called directly from the executable (i.e. called from
>within the library).
>
>
>
Thanks for the explanation.
next prev parent reply other threads:[~2004-02-05 1:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-05 0:06 David Carlton
2004-02-05 0:21 ` Daniel Jacobowitz
2004-02-05 1:03 ` Jeff Johnston [this message]
2004-02-05 1:22 ` [PATCH]: " Jeff Johnston
2004-02-05 1:48 ` David Carlton
2004-02-05 4:25 ` Daniel Jacobowitz
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