#21 Segmentation fault

[George Matveev]

Segmentation fault on start up. Observed on Debian x86_64 GNU/Linux, gcc 4.6/4.7.

geo@fermi:~/RW/mpi/launchmon/launchmon-1.0-release$ launchmon
Segmentation fault
geo@fermi:~/RW/mpi/launchmon/launchmon-1.0-release$
geo@fermi:~/RW/mpi/launchmon/launchmon-1.0-release$ gdb launchmon
GNU gdb (GDB) 7.4.1-debian
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License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
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<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/geo/RW/mpi/launchmon/launchmon-1.0-release/lmon-srun/bin/launchmon...done.
(gdb) run
Starting program: /home/geo/RW/mpi/launchmon/launchmon-1.0-release/lmon-srun/bin/launchmon

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff777df4b in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::string const&) ()
from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
(gdb) bt
#0 0x00007ffff777df4b in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::string const&) ()
from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
#1 0x00000000004136cb in __static_initialization_and_destruction_1 (__initialize_p=<optimized out>, __priority=<optimized out>) at sdbg_linux_ttracer_impl.hxx:77
#2 _GLOBAL__sub_I__ZN17linux_launchmon_t8init_APIEP11opts_args_t () at sdbg_linux_launchmon.cxx:3398
#3 0x0000000000438d2d in __libc_csu_init ()
#4 0x00007ffff6ebce40 in __libc_start_main (main=<optimized out>, argc=<optimized out>, ubp_av=<optimized out>, init=0x438cd0 <__libc_csu_init>,
fini=0x7ffff7220320 <initial>, rtld_fini=0x7ffff79a7c90 <typeinfo for std::locale::facet>, stack_end=0x7fffffffdc28) at libc-start.c:187
#5 0x0000000000413e81 in _start ()
(gdb)

[George Matveev]

This is because of std::string module_name and module_symbol which requires basic_string(std::string const&) before strings could be used. Solution: replace std::string with const char*. Tested on same Debian x86_64 GNU/Linux. Patch is submitted.

[George Matveev]

svn diff with fix