Package: gdb
Version: 6.8-1
Severity: normal
Tags: upstream
Hello,
please note I am not the original reporter of this bug, I just confirmed
it.
If I compile the attached source, start debugging, break in print_pokus()
and then run a lot of steps (eg. run step and hold enter), the program
jumps somewhere out of the code and segfaults.
According to the original reproter, this is because gdb installs a
breakpoint (int 3) in a function, then the threads switch and the other
thread uses the code with the breakpoint (which is corrupted).
Also, it didn't happen with gdb 6.7 and lower.
Regards
Jiri Palecek#include <pthread.h>
#include <stdio.h>
#include <unistd.h>
void* print_pokus(void *unused)
{
while(1)
{
printf(" %s\n", (char *)unused);
}
return(NULL);
}
int main()
{
pthread_t thread_id1;
pthread_t thread_id2;
pthread_t thread_id3;
pthread_create(&thread_id1, NULL, &print_pokus, "1");
pthread_create(&thread_id2, NULL, &print_pokus, "2");
pthread_create(&thread_id3, NULL, &print_pokus, "3");
while(1)
{
sleep(1);
}
return(0);
}
