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References: <CAF8BazAnV9noKDG2LzmkYKCNGRi6DKgGc-=q3TODQpa4G6OD5A@mail.gmail.com> <mvmzjgu4nqe.fsf@hawking.suse.de>
From: Aleksey Midenkov <midenok@gmail.com>
Date: Mon, 30 Jun 2014 12:00:00 -0000
Message-ID: <CAF8BazAcHapt48DKxcighBe24V=SHbi5K7bxKqBdmEeLN5aaiA@mail.gmail.com>
Subject: Re: Break on library load before main
To: Andreas Schwab <schwab@suse.de>
Cc: gdb@sourceware.org
Content-Type: text/plain; charset=UTF-8
X-SW-Source: 2014-06/txt/msg00102.txt.bz2

On Mon, Jun 30, 2014 at 3:54 PM, Andreas Schwab <schwab@suse.de> wrote:
> Aleksey Midenkov <midenok@gmail.com> writes:
>
>> I tried to stop execution before main() with following methods:
>>
>> 1. break dlopen
>> 2. catch load
>> 3. catch syscall uselib
>>
>> Nothing works! When I issue 'start', all libraries get loaded without
>> stop before main(). I should mention, that 'catch load' somehow works.
>> It stops somewhere, but very late (see attachment for output log).
>
> Try set stop-on-solib-events 1.
>

It also stops too late (after finished reading all symbols):

...
Reading symbols from /usr/lib/x86_64-linux-gnu/libogg.so.0...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libogg.so.0
Reading symbols from /lib/x86_64-linux-gnu/libresolv.so.2...Reading
symbols from /usr/lib/debug/lib/x86_64-linux-gnu/libresolv-2.19.so...done.
done.
Loaded symbols for /lib/x86_64-linux-gnu/libresolv.so.2
Stopped due to shared library event:
  Inferior loaded /usr/lib/libkdecore.so.5
    /home/midenok/src/kde/kdevelop/stable/opt/lib/libkdevplatforminterfaces.so.7
    /home/midenok/src/kde/kdevelop/stable/opt/lib/libkdevplatformshell.so.7
    /usr/lib/libktexteditor.so.4
    /usr/lib/x86_64-linux-gnu/libQtDeclarative.so.4
    /usr/lib/libkdeclarative.so.5
    /home/midenok/src/kde/kdevelop/stable/opt/lib/libsublime.so.7
    /usr/lib/libkdeui.so.5
    /usr/lib/x86_64-linux-gnu/libQtDBus.so.4
    /usr/lib/x86_64-linux-gnu/libQtCore.so.4
    /usr/lib/x86_64-linux-gnu/libQtGui.so.4
    /usr/lib/x86_64-linux-gnu/libstdc++.so.6
    /lib/x86_64-linux-gnu/libc.so.6
    /usr/lib/x86_64-linux-gnu/libQtNetwork.so.4
    /lib/x86_64-linux-gnu/libz.so.1
...

Strange message 'Inferior loaded ...'. It lists all libs loaded.
Shouldn't it stop on each lib one-by-one?