Hi gcc-help,
Our system crashed which was compiled by GCC. While, we can not say
that GCC compiler is the root cause.
But the strange thing is that I created a sample test code and
compiled it with GCC. It worked fine when I chose O0 as the
optimization level but it crashed when I chose other optimization
levels.
It did not crashed when I used SUN CC compiler no matter which
optimization level I chose.
Below please find my test code and Makefile. The code is very simple
and the only thing I did is let it link to a library
/usr/lib/64/libicuio.so.3.
Thanks,
James
BTW: change -m64 to -m32 could also let the core dump go away.
GCC version: 4.0.1
Target: i386-pc-solaris2.10
Thread model: posix
*******************************main.cc***************************************
#include <iostream>
using namespace std;
void* th_test(void* arg)
{
cout << "this is a thread: " << pthread_self() << endl;
pthread_exit(0);
}
int main (int argc, char* argv[])
{
pthread_attr_t thread_attr;
pthread_t thread;
pthread_attr_init(&thread_attr);
pthread_attr_setdetachstate(&thread_attr, PTHREAD_CREATE_DETACHED);
pthread_create(&thread, &thread_attr, th_test, NULL);
sleep(1);
cout << "this is main: " << pthread_self() << endl;
}
*****************************Makefile*******************************************
all : test
CC = g++ -g -fPIC -O3 -ggdb3 -m64 -Wno-deprecated
.cc.o:
$(CC) -c -o $@ $< -I .
test : main.o
$(CC) main.o -o test -licutu
clean :
rm -rf *.o test core
******************************End************************************************
