Re: [Boost-users] [Regex] problems compiling with gcc 4.4

On Sun, Dec 14, 2008 at 6:13 PM, John Maddock wrote:

Aonghus Lawlor wrote:

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Thanks for the suggestion- I tried this line:

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const std::locale locale; const std::messages<char>& msgs = std::use_facet< std::messages<char> >( locale );

but it makes no difference- the program still crashes only with gcc-4.4, and not previous versions.

I don't follow: does the above code run OK, but regex still crashes?

no, it doesnt run- it crashes with the same backtrace as before: (gdb) bt #0 0x90d90b9e in __kill () #1 0x90d90b91 in kill$UNIX2003 () #2 0x90e07ec2 in raise () #3 0x90e1747f in abort () #4 0x0026792c in __gnu_cxx::__verbose_terminate_handler () #5 0x00265239 in __cxxabiv1::__terminate () #6 0x0026527d in std::terminate () #7 0x0026539c in __cxa_throw () #8 0x001eeb00 in std::__throw_bad_cast () #9 0x00370d25 in std::use_facet () #10 0x00127c93 in boost::re_detail::basic_regex_implementation

::basic_regex_implementation () #11 0x001256a6 in boost::basic_regex >::do_assign () #12 0x00001d6a in boost::basic_regex >::assign () #13 0x00001d3e in boost::basic_regex >::assign () #14 0x00001c9f in boost::basic_regex >::basic_regex () #15 0x00001b05 in main ()

This is the compile command I am using (on osx):

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g++-mp-4.4 -g -o boost_test_regex boost_test_regex.C -I/opt/local/include/boost -L/opt/local/lib -lboost_regex-mt

and it terminates like this:

$ ./boost_test_regex terminate called after throwing an instance of 'std::bad_cast' what(): std::bad_cast Abort trap

The gcc-4.4 is from macports, and was working fine with the rest of my code, until I ran into this problem with boost:

$ g++-mp-4.4 -v Using built-in specs. Target: i386-apple-darwin9.5.0 Configured with: ../gcc-4.4-20081128/configure --prefix=/opt/local --enable-languages=c,c++,objc,obj-c++ --libdir=/opt/local/lib/gcc44 --includedir=/opt/local/include/gcc44 --infodir=/opt/local/share/info --mandir=/opt/local/share/man --with-local-prefix=/opt/local --with-system-zlib --disable-nls --program-suffix=-mp-4.4 --with-gxx-include-dir=/opt/local/include/gcc44/c++/ --with-gmp=/opt/local --with-mpfr=/opt/local Thread model: posix gcc version 4.4.0 20081128 (experimental) (GCC)

I'm not really familiar with the usage of locale's and use_facet's , so I'm grateful for any other suggestions you might have,

None at present, other than use a released version of gcc rather than the current 4.4 development branch. Probably your best bet is to report this as a bug to the gcc folks - if you need help in figuring out a test case let me know - but as I don't have access to that platform you'll have to do most of the work!

fair enough- I figured it might have been a bug in boost- but I'll report it to the gcc list anyway, thanks, a

Cheers, John. _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users