[Bug c++/36778] New: [feature request] -Wfatal-warnings

[Bug c++/36778] New: [feature request] -Wfatal-warnings

[gcc-bugzilla at contacts dot eelis dot net]

Gcc has a versatile set of warning/error flags that let one tune its behavior,
but there is one thing that it seems is currently not supported: the ability to
have gcc abort on the first diagnostic, without losing information about
whether that diagnostic is a warning or an error.

One can use -Werror -Wfatal-errors to get abortion on the first diagnostic, but
then warnings like "suggest parentheses around && within ||" are reported as
errors.

Ideally, there would be a flag -Wfatal-warnings, which would cause the compiler
to abort compilation on the first warning. One could then use -Wfatal-errors
-Wfatal-warnings to get abortion on the first diagnostic without losing
information about whether that diagnostic is a warning or an error.

While I believe this feature would be more generally useful, the particular use
case I'm requesting this for is geordi ( http://www.eelis.net/geordi/ ), a
popular educational IRC C++ bot which compiles C++ code snippets with gcc and
reports the first diagnostic (if any). Since only the first diagnostic is
needed, geordi uses -Werror -Wfatal-errors to reduce its response time, but
this means it misreports warnings like the one mentioned above, as errors.
Having -Wfatal-warnings would trivially solve this without imposing a
responsiveness penalty.

I realize this request might be a bit of a stretch, but I thought I'd give it a
shot. Thanks for your time.


-- 
           Summary: [feature request] -Wfatal-warnings
           Product: gcc
           Version: 4.3.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: gcc-bugzilla at contacts dot eelis dot net


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36778

[Bug c++/36778] [feature request] -Wfatal-warnings

[pinskia at gcc dot gnu dot org]

-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |enhancement


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36778

[Bug c++/36778] [feature request] -Wfatal-warnings

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36778

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
                 CC|gcc-bugs at gcc dot gnu.org |
         Resolution|                            |INVALID

--- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-10-01 09:18:32 UTC ---
Seems unnecessary, see: http://gcc.gnu.org/ml/gcc/2011-10/msg00001.html