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Re: Build failure with probe patch
- From: Sergio Durigan Junior <sergiodj at redhat dot com>
- To: "Steve Ellcey " <sellcey at imgtec dot com>
- Cc: <jose dot marchesi at oracle dot com>, <gdb-patches at sourceware dot org>
- Date: Wed, 18 Feb 2015 18:57:51 -0500
- Subject: Re: Build failure with probe patch
- Authentication-results: sourceware.org; auth=none
- References: <bac100bc-73de-4bf6-86b5-912ad6887c5a at BAMAIL02 dot ba dot imgtec dot org>
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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