[Bug gdb/30207] GDB crashes on processing Apache2 crash dump

["simon.marchi at polymtl dot ca" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=30207

Simon Marchi <simon.marchi at polymtl dot ca> changed:

           What    |Removed                     |Added
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                 CC|                            |simon.marchi at polymtl dot ca

--- Comment #5 from Simon Marchi <simon.marchi at polymtl dot ca> ---
(In reply to Erlandas from comment #4)
> Have removed version 12.1 which comes with "apt install gdb"
> 
> Built version 13.1 from source. But I do not see gdb-dbgsym executable. Am I
> missing something or did I have to build it with some additional config?

If you build it from source, you wouldn't use the dbgsym package.  The dbgsym
packages contain debug info matching the binaries distributed in the distro
packages.

When configuring (./configure) GDB, pass:

  CFLAGS="-g -O0" CXXFLAGS="-g -O0"

That will make it build with no optimizations (it will be slower, but easier to
debug) and with debug info directly inside the binary.

Btw, since you are using Ubuntu 22.04, you could have also configured the
top-level GDB to use debuginfod, as described here:

https://wiki.ubuntu.com/Debug%20Symbol%20Packages#Debuginfod

This is pretty cool, it makes GDB download debug info for distro packages
transparently, when it needs it.

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