trigger signal: 11
./test_cario(_Z14signal_handleri+0x5e) [0x400e4b]
/lib64/libc.so.6(+0x35270) [0x7fc0c1e59270]
./test_cario(_Z4add2PKc+0x1f) [0x400f04]
./test_cario(_Z3addPKc+0x18) [0x400f61]
./test_cario(main+0xbc) [0x40101f]
/lib64/libc.so.6(__libc_start_main+0xf5) [0x7fc0c1e45c05]
./test_cario() [0x400d29]

[root@localhost debug]$ addr2line -e a.out 0x400e4b
/home/root/test/main.cpp:13
[root@localhost debug]$ addr2line -e a.out 0x400f04
/home/root/test/main.cpp:30
[root@localhost debug]$ addr2line -e a.out 0x400f61
/home/root/test/main.cpp:36
[root@localhost debug]$ addr2line -e a.out 0x40101f
/home/root/test/main.cpp:56

#include <iostream>
#include <zconf.h>
#include <signal.h>
#include <execinfo.h>#include <stdio.h>
#include <stdlib.h>void signal_handler( int s ) {fprintf( stderr, "trigger signal: %d\n", s );void* pszstack[256] = {NULL};int stacknum = backtrace( pszstack, 256 );if ( stacknum > 0 ) {char** stacktrace = backtrace_symbols( pszstack, stacknum );for ( int i = 0; i < stacknum; ++i ) {fprintf( stderr, "%s\n", stacktrace[i] );}free( stacktrace );} else {fprintf( stderr, "no stack trace: %d", stacknum );}exit(0);
}void add2( const char* psz )
{int a = 0;int b = 1;std::cout << a+b << "data: " << psz[0] << std::endl;
}void add( const char* psz )
{add2( psz );
}int main() {signal( SIGPIPE, SIG_IGN );signal( SIGSEGV, signal_handler );signal( SIGABRT, signal_handler );signal( SIGFPE, signal_handler );signal( SIGSYS, signal_handler );signal( SIGIO, signal_handler );char* psztemp = NULL;for ( int i = 0; i < 5; ++i ){std::cout << "sleep: " << i << std::endl;sleep( 1 );}add(psztemp);for ( int i = 0; i < 5; ++i ){std::cout << "sleep2: " << i << std::endl;sleep( 1 );}return 0;
}