On Mon, Nov 26, 2001, Oleg Goldshmidt wrote about "threads question":
> static void* start(void* arg)
> {
> int c = *((int*)arg);
> free(arg);
> .....
> }
>
> int main(void)
> {
> int* arg = NULL;
>
> if ((arg = (int*)malloc(sizeof(*arg))) == NULL)
>...
> if (pthread_create(NULL, NULL, start, arg) != 0)
> {
> free(arg);
> fprintf(stderr,"Error: %s\n",strerror(errno));
> return EXIT_FAILURE;
> }
>
> return EXIT_SUCCESS;
> }
>
What is this last return statement?? Returning from main? That's not something
you're supposed to do in a multithreaded program. It might, for example,
free the entire malloc pool, including arg which is later freed in the
second thread, causing a segmentation fault.
To reiterate - any thread might simply 'return', but the main thread may
not.
Try replacing "return EXIT_SUCCESS" by "pause()" (for example) and see
if it now works.
--
Nadav Har'El | Monday, Nov 26 2001, 12 Kislev 5762
[EMAIL PROTECTED] |-----------------------------------------
Phone: +972-53-245868, ICQ 13349191 |I before E except after C. We live in a
http://nadav.harel.org.il |weird society!
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