[Bug fortran/54822] New: OpenMP - Firstprivate optional dummy arguments crash if not present
roger.ferrer at bsc dot es
gcc-bugzilla@gcc.gnu.org
Fri Oct 5 09:05:00 GMT 2012
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54822
Bug #: 54822
Summary: OpenMP - Firstprivate optional dummy arguments crash
if not present
Classification: Unclassified
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: roger.ferrer@bsc.es
The following program
SUBROUTINE S(X)
IMPLICIT NONE
INTEGER, OPTIONAL :: X
!$OMP TASK FIRSTPRIVATE(X)
IF (PRESENT(X)) THEN
X = X + 1
END IF
!$OMP END TASK
END SUBROUTINE S
PROGRAM MAIN
IMPLICIT NONE
INTERFACE
SUBROUTINE S(X)
IMPLICIT NONE
INTEGER, OPTIONAL :: X
END SUBROUTINE S
END INTERFACE
CALL S()
END PROGRAM MAIN
crashes at runtime using gfortran 4.7.1
$ gfortran -o bug bug.f90 -fopenmp
$ ./bug
Program received signal SIGSEGV: Segmentation fault - invalid memory reference.
Backtrace for this error:
#0 0x7FC7C9245667
#1 0x7FC7C9245C34
#2 0x7FC7C83DE4EF
#3 0x4007B2 in s_._omp_cpyfn.1 at bug.f90:0
#4 0x7FC7C8DA2875
#5 0x40074D in s_
#6 0x40075D in MAIN__ at bug.f90:0
Violació de segment
I think that the initialization of the firstprivate X using the non-present
dummy argument X is causing the crash.
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