Re: [cmake-developers] Rogue7 dashboards and clang undefined behaviour
On Tue, 4 Jun 2013 13:45:34 -0400, Brad King said:
'CTestTestFdSetSize' is superficially happening in an OS header's macro:
static __inline int
__darwin_fd_isset(int _n, const struct fd_set *_p)
{
return (_p-fds_bits[_n/__DARWIN_NFDBITS] (1(_n %
__DARWIN_NFDBITS)));
}
where right right-hand side of the is apparently 31.
__DARWIN_NFDBITS is 32.
Alas, gdb refuses to give me a backtrace. But there are only 9
FD_ISSET() in
CMake, anyone familiar with this test/code?
The test covers CTest's ability to drive many child processes at once
so the file descriptor set is getting filled up. The FD_ISSET calls
in Source/kwsys/ProcessUNIX.c will be the ones triggering this. It
looks to me like the bug is in the OS header macro because the 1
should be 1u.
Agreed. I'll suppress both these tests and unsuppress them when the libarchive
and Apple people fix their respective bugs.
Cheers,
--
Sean McBride, B. Eng s...@rogue-research.com
Rogue Researchwww.rogue-research.com
Mac Software Developer Montréal, Québec, Canada
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[cmake-developers] Rogue7 dashboards and clang undefined behaviour
Hi all,
I recently tweaked my Rogue7 dashboard's undefined behaviour checks and now
there are two test failures:
http://open.cdash.org/viewTest.php?onlyfailedbuildid=2926604
'ExternalProject' is a libarchive bug which I filed here:
http://code.google.com/p/libarchive/issues/detail?id=320
'CTestTestFdSetSize' is superficially happening in an OS header's macro:
static __inline int
__darwin_fd_isset(int _n, const struct fd_set *_p)
{
return (_p-fds_bits[_n/__DARWIN_NFDBITS] (1(_n %
__DARWIN_NFDBITS)));
}
where right right-hand side of the is apparently 31. __DARWIN_NFDBITS is 32.
Alas, gdb refuses to give me a backtrace. But there are only 9 FD_ISSET() in
CMake, anyone familiar with this test/code?
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
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Re: [cmake-developers] Rogue7 dashboards and clang undefined behaviour
On 06/04/2013 01:30 PM, Sean McBride wrote:
'CTestTestFdSetSize' is superficially happening in an OS header's macro:
static __inline int
__darwin_fd_isset(int _n, const struct fd_set *_p)
{
return (_p-fds_bits[_n/__DARWIN_NFDBITS] (1(_n %
__DARWIN_NFDBITS)));
}
where right right-hand side of the is apparently 31. __DARWIN_NFDBITS is
32.
Alas, gdb refuses to give me a backtrace. But there are only 9 FD_ISSET() in
CMake, anyone familiar with this test/code?
The test covers CTest's ability to drive many child processes at once
so the file descriptor set is getting filled up. The FD_ISSET calls
in Source/kwsys/ProcessUNIX.c will be the ones triggering this. It
looks to me like the bug is in the OS header macro because the 1
should be 1u.
-Brad
--
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http://www.kitware.com/opensource/opensource.html
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