Debug info broken for gcc-4.5.0 (experimental)

Debug info broken for gcc-4.5.0 (experimental)

[Ryan Johnson]

Hi all,

I've been using gcc-4.5.0 happily for a while, but today I had to break 
out gdb to chase down a seg fault. Unfortunately, gdb was getting line 
numbers completely wrong, so I had to revert to gcc-4.3 to work through 
my bug.

Has anybody else seen this? If not, and if it's not trivial to 
reproduce, I can cook up a minimal test case.

Ryan


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Re: Debug info broken for gcc-4.5.0 (experimental)

[Corinna Vinschen]

On Jul  6 02:06, Ryan Johnson wrote:
> Hi all,
> 
> I've been using gcc-4.5.0 happily for a while, but today I had to
> break out gdb to chase down a seg fault. Unfortunately, gdb was
> getting line numbers completely wrong, so I had to revert to gcc-4.3
> to work through my bug.
> 
> Has anybody else seen this? If not, and if it's not trivial to
> reproduce, I can cook up a minimal test case.

The debug info in gcc-4.5 has changed in a way which older GDBs don't
understand.  You can build GDB 7.2 yourself, that should help.

Actually, Chris, we're still on GDB 6.8.  Any chance we can get an
official 7.2 release?


Corinna

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Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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Re: Debug info broken for gcc-4.5.0 (experimental)

[Ryan Johnson]

On 06/07/2011 3:09 AM, Corinna Vinschen wrote:
> On Jul  6 02:06, Ryan Johnson wrote:
>> Hi all,
>>
>> I've been using gcc-4.5.0 happily for a while, but today I had to
>> break out gdb to chase down a seg fault. Unfortunately, gdb was
>> getting line numbers completely wrong, so I had to revert to gcc-4.3
>> to work through my bug.
>>
>> Has anybody else seen this? If not, and if it's not trivial to
>> reproduce, I can cook up a minimal test case.
> The debug info in gcc-4.5 has changed in a way which older GDBs don't
> understand.  You can build GDB 7.2 yourself, that should help.
>
> Actually, Chris, we're still on GDB 6.8.  Any chance we can get an
> official 7.2 release?
Doh!

I wondered if that was it, but there wasn't an updated gdb available 
(experimental or otherwise). Silly thing is, I probably have a gdb-7.2 
sitting around somewhere that I didn't think to try.

Thanks,
Ryan


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Re: Debug info broken for gcc-4.5.0 (experimental)

[Yaakov (Cygwin/X)]

On Wed, 2011-07-06 at 03:14 -0400, Ryan Johnson wrote:
> I wondered if that was it, but there wasn't an updated gdb available 
> (experimental or otherwise). Silly thing is, I probably have a gdb-7.2 
> sitting around somewhere that I didn't think to try.

GCC 4.5.3 and GDB 7.2 are available in Ports in the meantime.


Yaakov



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Can't install from ports server (Was: Re: Debug info broken for gcc-4.5.0 (experimental))

[Rolf Campbell]

On 2011-07-06 04:29, Yaakov (Cygwin/X) wrote:
> GCC 4.5.3 and GDB 7.2 are available in Ports in the meantime.
> Yaakov

I don't know who maintains the ports server, but when I try to use the 
instructions on http://sourceware.org/cygwinports/ , and use 
http://downloads.sourceforge.net/cygwin-ports as my mirror, setup 
crashes right after downloading setup.bz2. If I use the ftp version as 
my mirror, things seem to work ok.


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Re: Can't install from ports server (Was: Re: Debug info broken for gcc-4.5.0 (experimental))

[Christopher Faylor]

On Wed, Jul 06, 2011 at 01:46:14PM -0400, Rolf Campbell wrote:
>On 2011-07-06 04:29, Yaakov (Cygwin/X) wrote:
>> GCC 4.5.3 and GDB 7.2 are available in Ports in the meantime.
>> Yaakov
>
>I don't know who maintains the ports server, but when I try to use the 
>instructions on http://sourceware.org/cygwinports/ , and use 
>http://downloads.sourceforge.net/cygwin-ports as my mirror, setup 
>crashes right after downloading setup.bz2. If I use the ftp version as 
>my mirror, things seem to work ok.

Please don't report cygwinports problem here.  The web page makes
that very clear.

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