The run-time cannot unwind properly after thread cancelation.

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May 21, 2011 11:30 AM PDT



The following test case does not work when compiled with Intel compiler 12.0. The exception handling is incorrect and the run-time cannot unwind properly after thread cancelation. The Intel compiler 11.1 works correctly.

$ cat testcase.cpp
#include <pthread.h>
#include <stdio.h>

int counter=0;

class Guard {
     public:
     Guard() {
         ++counter;
     }

     ~Guard() {
         --counter;
     }
};

void *handler_with_guard(void *)
{
    Guard l;
    pthread_exit(NULL);
}

int main(int argc, char *argv[])
{
    pthread_t t;
    int result = pthread_create(&t, 0, handler_with_guard, 0);
    printf("pthread_create result = %d\n", result);

    result = pthread_join(t, NULL);
    printf("pthread_join result = %d\n", result);
    printf("counter = %d\n", counter);

    return 0;
}




$ icc -c testcase.cpp
$ icc -lpthread testcase.o
$ ./a.out
pthread_create result = 0
terminate called without an active exception
Aborted (core dumped)

$ icc -c -O0 testcase.cpp
$ icc -lpthread testcase.o
$ ./a.out
pthread_create result = 0
pthread_join result = 0
counter = 0

The above testcase is from http://software.intel.com/en-us/forums/showthread.php?t=80459&p=1


Solution:

The issue has been resolve in Intel Compiler 12.0 update 4.


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This article applies to: Intel® C++ Compiler for Linux* Knowledge Base