Re: GDB 7.5 on OS X 10.7

[Tristan Gingold <gingold@adacore.com>]

On Aug 31, 2012, at 6:37 AM, Kaushik Srenevasan wrote:

> Is GDB (7.5) known to work on OS X 10.7? I compiled it from GIT with
> all defaults except the prefix but don't seem to be able to get even
> the basic commands (bt, break) to work.

Yes, it is known to work (I use it every days).  However there is still many issues because it is not heavily used.
In particular, I rarely debug dylibs.

Tristan.

> 
>  file ~/src/jdk7/build/macosx-x86_64-debug/bin/java
>  set args -classpath ~/src/tmp helloworld
>  catch load libjvm
> 
> Catchpoint 1
>  Inferior loaded
> /Users/ks/src/jdk7/build/macosx-x86_64-debug/lib/server/libjvm.dylib
> 0x00007fff5fc0b269 in ?? ()
> (gdb) bt
> #0  0x00007fff5fc0b269 in ?? ()
> #1  0x00007fff5fc0b24d in ?? ()
> #2  0x00000001000d1a50 in ?? ()
> #3  0x00007fff5fc3b560 in ?? ()
> #4  0x00000001000d1f20 in ?? ()
> #5  0x00007fff5fc0540e in ?? ()
> #6  0x0000000101800000 in ?? ()
> #7  0x0000000100200300 in ?? ()
> #8  0x0000000050403138 in ?? ()
> #9  0x00007fff5fc052ea in ?? ()
> #10 0x0000000100200260 in ?? ()
> #11 0x00000001000d1ae8 in ?? ()
> #12 0x0000000000000000 in ?? ()
> (gdb) break LRG::set_mask
> Cannot access memory at address 0x141be0
> 
> It looks like break was able to find the symbol's address. The address
> however looks suspect to me. The target (if that matters) is a debug
> build of the OpenJDK.
> 
>            --- Kaushik