Re: Build failure with probe patch

[Sergio Durigan Junior <sergiodj@redhat.com>]

On Wednesday, February 18 2015, Steve Ellcey wrote:

> Is anyone else seeing this error when building the top-of-tree gdb:
>
>
> cc1: warnings being treated as errors
> /scratch/sellcey/gdb-bug/src/gdb/gdb/dtrace-probe.c: In function 'dtrace_get_probes':
> /scratch/sellcey/gdb-bug/src/gdb/gdb/dtrace-probe.c:624: warning: dereferencing type-punned pointer will break strict-aliasing rules
> make[1]: *** [dtrace-probe.o] Error 1

Thanks for your report.

I don't see anything like this in any of our builders here:

  <http://gdb-build.sergiodj.net/waterfall>

> I get this when building gdb on a CentOS 5 system with GCC 4.1.2 but I do not
> see it when building on a Ubuntu 12.04 system with GCC 4.6.3.  I am not sure
> if this is due to the old GCC or if it is a legitimate error.

According to:

  <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=41874>

This warning has been removed from GCC.  And by looking at the code
referenced by it, I don't see anything wrong there.  So I'd say you can
ignore this (and probably update your GCC).

-- 
Sergio
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