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| author | Harald Anlauf <anlauf@gmx.de> | 2021-11-23 21:39:36 +0100 |
|---|---|---|
| committer | Harald Anlauf <anlauf@gmx.de> | 2021-11-23 22:02:40 +0100 |
| commit | 16e95050f71e9fa408e9bd8ccd415b0e7adc66e5 (patch) | |
| tree | 681a333788af11cdfafca9e03231c6052297ec2c | |
| parent | 4b1d3d8d732bea86c7b2aba46c2a437461020824 (diff) | |
| download | gcc-16e95050f71e9fa408e9bd8ccd415b0e7adc66e5.tar.gz | |
Fortran: do not attempt simplification of [LU]BOUND for pointer/allocatable
gcc/fortran/ChangeLog:
PR fortran/103392
* simplify.c (simplify_bound): Do not try to simplify
LBOUND/UBOUND for arrays with POINTER or ALLOCATABLE attribute.
gcc/testsuite/ChangeLog:
PR fortran/103392
* gfortran.dg/bound_simplification_7.f90: New test.
| -rw-r--r-- | gcc/fortran/simplify.c | 6 | ||||
| -rw-r--r-- | gcc/testsuite/gfortran.dg/bound_simplification_7.f90 | 18 |
2 files changed, 24 insertions, 0 deletions
diff --git a/gcc/fortran/simplify.c b/gcc/fortran/simplify.c index 6a6b3fbd037..c9e13b59da9 100644 --- a/gcc/fortran/simplify.c +++ b/gcc/fortran/simplify.c @@ -4266,6 +4266,12 @@ simplify_bound (gfc_expr *array, gfc_expr *dim, gfc_expr *kind, int upper) || (as->type == AS_ASSUMED_SHAPE && upper))) return NULL; + /* 'array' shall not be an unallocated allocatable variable or a pointer that + is not associated. */ + if (array->expr_type == EXPR_VARIABLE + && (gfc_expr_attr (array).allocatable || gfc_expr_attr (array).pointer)) + return NULL; + gcc_assert (!as || (as->type != AS_DEFERRED && array->expr_type == EXPR_VARIABLE diff --git a/gcc/testsuite/gfortran.dg/bound_simplification_7.f90 b/gcc/testsuite/gfortran.dg/bound_simplification_7.f90 new file mode 100644 index 00000000000..3efecdff769 --- /dev/null +++ b/gcc/testsuite/gfortran.dg/bound_simplification_7.f90 @@ -0,0 +1,18 @@ +! { dg-do compile } +! PR fortran/103392 - ICE in simplify_bound + +program p + integer, allocatable :: a(1:1) ! { dg-error "deferred shape or assumed rank" } + integer :: b(1) = lbound(a) ! { dg-error "does not reduce" } + integer :: c(1) = ubound(a) ! { dg-error "does not reduce" } +end + +subroutine s(x, y) + type t + integer :: i(3) + end type t + type(t), pointer :: x(:) + type(t), allocatable :: y(:) + integer, parameter :: m(1) = ubound (x(1)% i) + integer :: n(1) = ubound (y(1)% i) +end subroutine s |