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[Bug fortran/51591] New: Strange output from STOP statement in OpenMP region
- From: "longb at cray dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 16 Dec 2011 22:08:47 +0000
- Subject: [Bug fortran/51591] New: Strange output from STOP statement in OpenMP region
- Auto-submitted: auto-generated
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51591
Bug #: 51591
Summary: Strange output from STOP statement in OpenMP region
Classification: Unclassified
Product: gcc
Version: 4.6.2
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: fortran
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: longb@cray.com
> cat testc.c
#include <unistd.h>
/* extern unsigned int sleep (unsigned int __seconds); */
int sleepc_ (unsigned int *sec)
{
sleep(*sec);
return 0;
}
> cat test.f90
use omp_lib
implicit none
integer i
print *,"Hello World"
call omp_set_num_threads(5)
!$omp parallel
!$omp do schedule(static,1)
do i=1,omp_get_num_threads()
!$omp critical
print *, "I am",omp_get_thread_num()," of",omp_get_num_threads()
!$omp end critical
select case (omp_get_thread_num())
case (0)
call sleep (1)
stop 0
case (1)
stop 1
case (2)
stop 2
case (3)
stop 3
case default
stop
end select
enddo
!$omp end do
!$omp barrier
!$omp end parallel
end
> cc -c testc.c
> ftn -fopenmp test.f90 testc.o
Sometimes output looks OK:
> aprun -n1 -d5 ./a.out
Hello World
STOP 1
I am 1 of 5
I am 2 of 5
Application 5777837 exit codes: 1
Application 5777837 resources: utime ~0s, stime ~0s
But more often there is some garbled text output:
> aprun -n1 -d5 ./a.out
Hello World
STOP 1
I am 1 of 5
0im `m5 <<<<----- What's this?
Application 5777838 exit codes: 1
Application 5777838 resources: utime ~0s, stime ~0s
<Nice to see that the STOP 1 results in an exit code of 1, though - new F08
feature.>