[Gmsh] Bug report in gmsh 2.4.2

[David Colignon]

Patrick Farrell wrote:
> On Tue, Oct 06, 2009 at 09:30:10AM +0100, David Colignon wrote:
>> Hi Patrick,
>>
>> this is disturbing...
>>
>> can you try it with the precompiled binary from our website ( http://geuz.org/gmsh/bin/Linux/gmsh-2.4.2-Linux.tgz ) ?
> 
> That works.
> 
>> And can you recompile your version without optimization flags ?
> 
> Sorry to be a pain, but can you explain how to compile without it?
> Previously, I just took the debian package from unstable and compiled
> it on my ubuntu machine. I took a quick look, but I couldn't convince
> cmake to not add -O2 to the command line. Is there any documentation
> on how to build gmsh?

I would first try

cmake -DCMAKE_BUILD_TYPE=Debug  path_to_gmsh
make

to remove all optimization flags.
If this still doesn't work, could you try compiling in 32 bit mode ?

export CXXFLAGS="-m32"
export CFLAGS="-m32"
cmake -DCMAKE_BUILD_TYPE=Debug  path_to_gmsh
make

Dave


> 
> Even if it works when compiled in a different manner, there might
> still be a bug; it's just it happens to be overwriting memory
> which isn't used later, or something else is different so that
> it doesn't have any visible effects.
> 
> Cheerio
> 
> Patrick