Ticket #9 (defect)

Opened 1 year ago

Last modified 11 months ago

pointer_to_shared_neg incorrectly expects compilation error, and runtime error should never occur

Status: closed (invalid)

Reported by: gary Assigned to: apokayi
Priority: major Milestone: milestone1
Component: component1 Version: 1.0
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When compiled with GCC/UPC 4.0.3.4, the pointer_to_shared_neg fails as follows: 

-------------->      Working on unit -- pointer_to_shared_neg\n

ERROR: The NEGATIVE unit [pointer_to_shared_neg] pass the compilation phase
The unit will not be run!!!
TEST 31m1mFAILED0m for the unit [pointer_to_shared_neg]

The body of the test appears as follows: 

        /*
         * To check that pointers to shared objects cannot be cast to
         * pointers to local objects, provided that the shared object
         * does not have affinity to the executing thread
         * the compiler MUST raise an ERROR here !!! 
         */ 
        
        int *p1;

        if(MYTHREAD == 0) { 
                control_int_variable = 55;
                s1 = &control_int_variable; 
                p1 = (int*) s1;
        }

The test above should never fail at runtime, because the conversion to a local pointer will only be executed on thread 0, and the shared address of any variable will always have affinity to thread 0.

If the conversion to local pointer were moved outside of the 'if' statement, it is still very unlikely the compiler would detect this possible error condition at compile-time, and the spec. does not require such behavior. Further, the spec. doesn't require the check be made at runtime either.

Change History

09/06/07 16:31:53: Modified by sbahra

  • owner changed from somebody to apokayi.

09/25/07 18:13:54: Modified by apokayi

  • status changed from new to closed.
  • resolution set to fixed.

test case is dropped because of an incorrect compiler ERROR check

09/29/07 13:26:45: Modified by finomeneres

  • cc set to Edson.
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  • status changed from closed to reopened.
  • type set to defect.
  • resolution deleted.
  • milestone set to milestone1.

10/26/07 06:28:28: Modified by sbahra

  • status changed from reopened to closed.
  • resolution set to invalid.