From the gdb backtrace, we see that the std::char_traits<char>::length
method with argument \"http:\\\\/\\\\/localhostr.com\\\\/files\\\\/.+?\"
is triggering the segmentation fault. g++ 4.3.2 introduced new Stack Smashing Protection features, which may interfere with the strlen length computation.
Recompile/relink your code with a recent g++ compiler and see if you solve this error. This sample code does not reproduce such error:
user@workstation ~
$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/i686-pc-cygwin/4.5.3/lto-wrapper.exe
Target: i686-pc-cygwin
Configured with: /gnu/gcc/releases/respins/4.5.3-3/gcc4-4.5.3-3/src/gcc-4.5.3/configure --srcdir=/gnu/gcc/releases/respins/4.5.3-3/gcc4-4.5.3-3/src/gcc-4.5.3 --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --libexecdir=/usr/lib --datadir=/usr/share --localstatedir=/var --sysconfdir=/etc --datarootdir=/usr/share --docdir=/usr/share/doc/gcc4 -C --datadir=/usr/share --infodir=/usr/share/info --mandir=/usr/share/man -v --with-gmp=/usr --with-mpfr=/usr --enable-bootstrap --enable-version-specific-runtime-libs --libexecdir=/usr/lib --enable-static --enable-shared --enable-shared-libgcc --disable-__cxa_atexit --with-gnu-ld --with-gnu-as --with-dwarf2 --disable-sjlj-exceptions --enable-languages=ada,c,c++,fortran,java,lto,objc,obj-c++ --enable-graphite --enable-lto --enable-java-awt=gtk --disable-symvers --enable-libjava --program-suffix=-4 --enable-libgomp --enable-libssp --enable-libada --enable-threads=posix --with-arch=i686 --with-tune=generic --enable-libgcj-sublibs CC=gcc-4 CXX=g++-4 CC_FOR_TARGET=gcc-4 CXX_FOR_TARGET=g++-4 GNATMAKE_FOR_TARGET=gnatmake GNATBIND_FOR_TARGET=gnatbind --with-ecj-jar=/usr/share/java/ecj.jar
Thread model: posix
gcc version 4.5.3 (GCC)
user@workstation ~
$ cat test.cc
#include <iostream>
#include <string>
int main(int argc, char *argv[]) {
char * a = "\"http:\\\\/\\\\/localhostr.com\\\\/files\\\\/.+?\"";
int t = std::char_traits<char>::length (a);
std::cout << t << std::endl;
}
user@workstation ~
$ g++ -g test.cc
test.cc: In function ‘int main(int, char**)’:
test.cc:6:14: warning: deprecated conversion from string constant to ‘char*’
user@workstation ~
$ gdb a.exe
Reading symbols from /home/user/a.exe...done.
(gdb) b std::char_traits<char>::length
Breakpoint 1 at 0x4017f6: file /usr/lib/gcc/i686-pc-cygwin/4.5.3/include/c++/bits/char_traits.h, line 263.
(gdb) r
Starting program: /home/user/a.exe
[New Thread 764.0x5e4]
[New Thread 764.0x100c]
Breakpoint 1, std::char_traits<char>::length (__s=0x402080 "\"http:\\\\/\\\\/localhostr.com\\\\/files\\\\/.+?\"") at /usr/lib/gcc/i686-pc-cygwin/4.5.3/include/c++/bits/char_traits.h:263
263 { return __builtin_strlen(__s); }
(gdb) c
Continuing.
41
[Inferior 1 (process 764) exited normally]
(gdb)
libboost_thread
, which doesn't refer to symbols likexxx@@GLIBC_2.2.5
– Feildd /path/to/libboost_regex.so
. – n. 1.8e9-where's-my-share m.test.cpp
. That's the origin of the crash, and inside yourmain
function. – Some programmer dude