Bug#749679: gmsh: Multiple and conflicting definitions of function CClinkern_flipper_flip

[Christophe Geuzaine]

On 29 May 2014, at 04:24, Michael Tautschnig <mt at debian.org> wrote:

> Package: gmsh
> Version: 2.8.4+dfsg-1
> Usertags: goto-cc
> 
> During a rebuild of all Debian packages in a clean sid chroot (using cowbuilder
> and pbuilder) the build failed with the following error. Please note that we
> use our research compiler tool-chain (using tools from the cbmc package), which
> permits extended reporting on type inconsistencies at link time.
> 
> [...]
> Linking CXX executable gmsh
> /usr/bin/cmake -E cmake_link_script CMakeFiles/gmsh.dir/link.txt --verbose=1
> /usr/bin/mpicxx   -DMPICH_SKIP_MPICXX -DOMPI_SKIP_MPICXX -lmpi -fPIC -Wall -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security   -Wl,-z,relro -Wl,--as-needed CMakeFiles/gmsh.dir/Fltk/Main.cpp.o CMakeFiles/gmsh.dir/Common/Gmsh.cpp.o ...
> 
> error: conflicting function declarations "CClinkern_flipper_flip"
> old definition in module flip_ll8 file /srv/jenkins-slave/workspace/sid-goto-cc-gmsh/gmsh-2.8.4+dfsg/contrib/blossom/concorde97/LINKERN/flip_ll8.c line 331
> void (signed int xprev, signed int x, signed int y, signed int ynext)
> new definition in module linkern file /srv/jenkins-slave/workspace/sid-goto-cc-gmsh/gmsh-2.8.4+dfsg/contrib/blossom/concorde97/INCLUDE/linkern.h line 94
> void (signed int, signed int)
> CMakeFiles/gmsh.dir/build.make:19876: recipe for target 'gmsh' failed
> make[4]: *** [gmsh] Error 1
> make[4]: Leaving directory '/srv/jenkins-slave/workspace/sid-goto-cc-gmsh/gmsh-2.8.4+dfsg/debian/build'
> CMakeFiles/Makefile2:1055: recipe for target 'CMakeFiles/gmsh.dir/all' failed
> make[3]: *** [CMakeFiles/gmsh.dir/all] Error 2
> 
> It seems several definitions of CClinkern_flipper_flip exist, and the linker is
> going to pick one of them. If it happens to pick the variant taking four
> arguments, the behaviour will be undefined for all call sites only passing two
> arguments.

Dear Michael,

Thanks for the report. This is now fixed in the Gmsh SVN.

Christophe



> 
> Best,
> Michael
> 

-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://www.montefiore.ulg.ac.be/~geuzaine