Experimental Physics and
Industrial Control System

"Ernest L. Williams Jr." <[email protected]> · Thu, 26 Oct 2006 11:30:53 -0400

On Thu, 2006-10-26 at 09:24 -0600, Jeff Hill wrote:
> > I have reveived a bundle of patches to EPICS Base 3.14 that supposedly
> > fixes (most of) the GCC 4 warnings.
> 
> I don't think that we have gcc 4.0 installed here yet. Is it being provided
> with the latest Linux? I just checked and it isn't provided yet by the
> cygwin installer.
> 

The latest enterprise level linux from RedHat does not use GCC4.
==================================================================================
[williams@dragon cdrom]$ more /etc/redhat-release
Red Hat Enterprise Linux WS release 4 (Nahant Update 4)
[williams@dragon cdrom]$ gcc -v
Reading specs from /usr/lib/gcc/x86_64-redhat-linux/3.4.6/specs
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --
infodir=/usr/share/info --enable-shared --enable-threads=posix --
disable-checking --with-system-zlib --enable-__cxa_atexit --disable-
libunwind-exceptions --enable-java-awt=gtk --host=x86_64-redhat-linux
Thread model: posix
gcc version 3.4.6 20060404 (Red Hat 3.4.6-3)
=================================================================================

However, if you want to claim support for Fedora and other linux distros
which moved ahead with GCC 4.x, then the warnings should be addressed.

Thanks,
Ernest

> > I have reveived a bundle of patches to EPICS Base 3.14 that supposedly
> > fixes (most of) the GCC 4 warnings.
> > 
> > Do you want me to ...
> > - commit them after quick review?
> > - commit them straight away?
> > - keep them for my own viewing pleasure?
> > 
> > Should I
> > - create a special branch?
> > - tag this commit somehow specially?
> > - commit them to the 3.14 branch only?
> > - commit them to both 3.14 branch and 3.15 trunk?
> > 
> > I'd like to hear your comments before completely messing things up
> > (which I'm going to do anyway, be assured).
> 
> I am happy for you to commit a fix Ralph. It seems that it would be a waste
> to commit your fix to R3.14 w/o doing a merge of the R3.14 updates onto the
> main trunk also.
> 
> Two concerns:
> 1) We need to be very careful not to add any new bugs to R3.14
> 2) There is always the peril that, when suppressing compiler warnings, we
> end up sweeping the dust bunnies under the carpet rather than eradicating
> them, and it might be better to have them in site (flagged by compiler
> warnings) as opposed to having them lurk in dark places (suppressed by casts
> etc).
> 
> Jeff
> 
> > -----Original Message-----
> > From: Ralph Lange [mailto:[email protected]]
> > Sent: Thursday, October 26, 2006 6:24 AM
> > To: EPICS Core Talk
> > Subject: GCC 4 warnings in EPICS Base
> > 
> > Hi all,
> > 
> > I have reveived a bundle of patches to EPICS Base 3.14 that supposedly
> > fixes (most of) the GCC 4 warnings.
> > 
> > Do you want me to ...
> > - commit them after quick review?
> > - commit them straight away?
> > - keep them for my own viewing pleasure?
> > 
> > Should I
> > - create a special branch?
> > - tag this commit somehow specially?
> > - commit them to the 3.14 branch only?
> > - commit them to both 3.14 branch and 3.15 trunk?
> > 
> > I'd like to hear your comments before completely messing things up
> > (which I'm going to do anyway, be assured).
> > 
> > Cheers,
> > Ralph
> 

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System