If there really is a problem here, it looks like it comes from the
structure returned by a call to the readdir function which is implemented
by the system libraries. So if there's a problem here, I don't think it's
CMake's fault.
On Sat, Sep 22, 2012 at 9:57 PM, Sean McBride s...@rogue-research.comwrote:
Hi all,
My dashboards used to build CMake with clang's -fcatch-undefined-behavior,
but now they've given it more smarts (to catch more bugs) and now one can't
build CMake with this flag.
Here's the build failure:
http://open.cdash.org/viewBuildError.php?buildid=2562276
It seems, near the end of the build, that the just-built cpack is run to
do something or other. This process dies:
$ gdb --args ../bin/cpack --help-full
/Users/builder/external/CMake-clang-dbg-x86_64/Docs/cpack.txt --help-full
/Users/builder/external/CMake-clang-dbg-x86_64/Docs/cpack.html --help-full
/Users/builder/external/CMake-clang-dbg-x86_64/Docs/cpack.1 --help-full
/Users/builder/external/CMake-clang-dbg-x86_64/Docs/cpack.docbook
(gdb) r
Starting program: /Users/builder/external/CMake-clang-dbg-x86_64/bin/cpack
--help-full /Users/builder/external/CMake-clang-dbg-x86_64/Docs/cpack.txt
--help-full /Users/builder/external/CMake-clang-dbg-x86_64/Docs/cpack.html
--help-full /Users/builder/external/CMake-clang-dbg-x86_64/Docs/cpack.1
--help-full
/Users/builder/external/CMake-clang-dbg-x86_64/Docs/cpack.docbook
Reading symbols for shared libraries
++ done
Program received signal EXC_BAD_INSTRUCTION, Illegal instruction/operand.
0x000100fac2e9 in cmsys::Directory::Load (this=0x7fff5fbfba90,
name=0x101f51c28 /Users/builder/external/CMake/Modules/) at
/Users/builder/external/CMake/Source/kwsys/Directory.cxx:223
223 this-Internal-Files.push_back(d-d_name);
(gdb) bt
#0 0x000100fac2e9 in cmsys::Directory::Load (this=0x7fff5fbfba90,
name=0x101f51c28 /Users/builder/external/CMake/Modules/) at
/Users/builder/external/CMake/Source/kwsys/Directory.cxx:223
#1 0x000100fb158e in cmsys::Glob::ProcessDirectory
(this=0x7fff5fbfc170, start=0, dir=@0x7fff5fbfbbf0) at
/Users/builder/external/CMake/Source/kwsys/Glob.cxx:302
#2 0x000100fb451a in cmsys::Glob::FindFiles (this=0x7fff5fbfc170,
inexpr=@0x7fff5fbfc168) at
/Users/builder/external/CMake/Source/kwsys/Glob.cxx:464
#3 0x000100653545 in cmDocumentation::getDocumentedModulesListInDir
(this=0x7fff5fbfe8f8, path=@0x7fff5fbfcab8, globExpr=@0x7fff5fbfcab0,
docedModuleList=@0x7fff5fbfcae8) at
/Users/builder/external/CMake/Source/cmDocumentation.cxx:771
#4 0x0001fc9e in main (argc=9, argv=0x7fff5fbff920) at
/Users/builder/external/CMake/Source/CPack/cpack.cxx:554
(gdb) p name
$1 = 0x101f51c28 /Users/builder/external/CMake/Modules/
(gdb) p *this
$2 = {
Internal = 0x101f51a80
}
(gdb) p d
$3 = (struct dirent *) 0x102010664
(gdb) p *d
$4 = {
d_ino = 387485515,
d_seekoff = 1769662337112866820,
d_reclen = 48,
d_namlen = 20,
d_type = 8 '\b',
d_name = AutomocInfo.cmake.in
\000\000\000\000\000\000\000?\032?\030\000\000\000\000\005\000\000\000?\032?\030D\000+\000\
bBasicConfigVersion-AnyNewerVersion.cmake.in
\000\000\000\000?\032?\030\000\000\000\000\006\000\000\000?\032?\030D\000(\000\
bBasicConfigVersion-ExactVersion.cmake.in
\000\000\000\000\000\000\000?\032?\030\000\000\000\000\a\000\000\000???\032H\000,\000\bBasicConfigVersi...
}
It might be a false positive, though I have yet to see any from this tool.
I'm hoping someone that knows the code can see the problem.
Cheers,
--
Sean McBride, B. Eng s...@rogue-research.com
Rogue Researchwww.rogue-research.com
Mac Software Developer Montréal, Québec, Canada
--
Powered by www.kitware.com
Visit other Kitware open-source projects at
http://www.kitware.com/opensource/opensource.html
Please keep messages on-topic and check the CMake FAQ at:
http://www.cmake.org/Wiki/CMake_FAQ
Follow this link to subscribe/unsubscribe:
http://www.cmake.org/mailman/listinfo/cmake
--
Powered by www.kitware.com
Visit other Kitware open-source projects at
http://www.kitware.com/opensource/opensource.html
Please keep messages on-topic and check the CMake FAQ at:
http://www.cmake.org/Wiki/CMake_FAQ
Follow this link to subscribe/unsubscribe:
http://www.cmake.org/mailman/listinfo/cmake
