[og10] Fortran: %re/%im fixes for OpenMP/OpenACC + gfc_is_simplify_contiguous

gcc/fortran/ChangeLog:

	* expr.c (gfc_is_simplify_contiguous): Handle REF_INQUIRY, i.e.
	%im and %re which are EXPR_VARIABLE.
	* openmp.c (resolve_omp_clauses): Diagnose %re/%im explicitly.

gcc/testsuite/ChangeLog:

	* gfortran.dg/goacc/ref_inquiry.f90: New test.
	* gfortran.dg/gomp/ref_inquiry.f90: New test.

(cherry picked from commit 799478b8914c438f7a33eb319efbae69c81f2111)

6 files changed, 120 insertions, 0 deletions

diff --git a/gcc/fortran/ChangeLog.omp b/gcc/fortran/ChangeLog.omp
index 09c2bb855c8..f99a11316f5 100644
--- a/gcc/fortran/ChangeLog.omp
+++ b/gcc/fortran/ChangeLog.omp
@@ -2,6 +2,14 @@
 
 	Backport from mainline
 
+	* expr.c (gfc_is_simplify_contiguous): Handle REF_INQUIRY, i.e.
+	%im and %re which are EXPR_VARIABLE.
+	* openmp.c (resolve_omp_clauses): Diagnose %re/%im explicitly.
+
+2021-02-24  Tobias Burnus  <tobias@codesourcery.com>
+
+	Backport from mainline
+
 	* openmp.c (resolve_omp_clauses): Explicitly diagnose
 	substrings as not permitted.
 
diff --git a/gcc/fortran/expr.c b/gcc/fortran/expr.c
index 569f4d9bf06..6cda947cd56 100644
--- a/gcc/fortran/expr.c
+++ b/gcc/fortran/expr.c
@@ -5837,6 +5837,8 @@ gfc_is_simply_contiguous (gfc_expr *expr, bool strict, bool permit_element)
 	part_ref  = ref;
       else if (ref->type == REF_SUBSTRING)
 	return false;
+      else if (ref->type == REF_INQUIRY)
+	return false;
       else if (ref->u.ar.type != AR_ELEMENT)
 	ar = &ref->u.ar;
     }
diff --git a/gcc/fortran/openmp.c b/gcc/fortran/openmp.c
index a7592f0545d..8d77f9e7351 100644
--- a/gcc/fortran/openmp.c
+++ b/gcc/fortran/openmp.c
@@ -4984,6 +4984,14 @@ resolve_omp_clauses (gfc_code *code, gfc_omp_clauses *omp_clauses,
 				&& array_ref->next->type == REF_SUBSTRING)))
 		      gfc_error ("Unexpected substring reference in %s clause "
 				 "at %L", name, &n->where);
+		    else if (array_ref && array_ref->type == REF_INQUIRY)
+		      {
+			gcc_assert (array_ref->u.i == INQUIRY_RE
+				    || array_ref->u.i == INQUIRY_IM);
+			gfc_error ("Unexpected complex-parts designator "
+				   "reference in %s clause at %L",
+				   name, &n->where);
+		      }
 		    else if (!resolved
 			|| n->expr->expr_type != EXPR_VARIABLE
 			|| array_ref->next
diff --git a/gcc/testsuite/ChangeLog.omp b/gcc/testsuite/ChangeLog.omp
index d012e9e75b4..25798189098 100644
--- a/gcc/testsuite/ChangeLog.omp
+++ b/gcc/testsuite/ChangeLog.omp
@@ -2,6 +2,13 @@
 
 	Backport from mainline
 
+	* gfortran.dg/goacc/ref_inquiry.f90: New test.
+	* gfortran.dg/gomp/ref_inquiry.f90: New test.
+
+2021-02-24  Tobias Burnus  <tobias@codesourcery.com>
+
+	Backport from mainline
+
 	* gfortran.dg/goacc/substring.f90: New test.
 	* gfortran.dg/gomp/substring.f90: New test.
 
diff --git a/gcc/testsuite/gfortran.dg/goacc/ref_inquiry.f90 b/gcc/testsuite/gfortran.dg/goacc/ref_inquiry.f90
new file mode 100644
index 00000000000..69dd38e5197
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/goacc/ref_inquiry.f90
@@ -0,0 +1,56 @@
+! Check for <var>%re, ...%im, ...%kind, ...%len
+! Cf. also OpenMP's ../gomp/ref_inquiry.f90
+! Cf. OpenACC spec issue 346
+! 
+implicit none
+type t
+  integer :: i
+  character :: c
+  complex :: z
+  complex :: zz(5)
+end type t
+
+integer :: i
+character(kind=4, len=5) :: c
+complex :: z, zz(5)
+type(t) :: x
+
+print *, is_contiguous(zz(:)%re)
+
+! inquiry function; expr_type != EXPR_VARIABLE:
+!$acc enter data copyin(i%kind, c%len)     ! { dg-error "not a proper array section" }
+!$acc enter data copyin(x%i%kind)          ! { dg-error "not a proper array section" }
+!$acc enter data copyin(x%c%len)           ! { dg-error "not a proper array section" }
+!$acc update self(i%kind, c%len)           ! { dg-error "not a proper array section" }
+!$acc update self(x%i%kind)                ! { dg-error "not a proper array section" }
+!$acc update self(x%c%len)                 ! { dg-error "not a proper array section" }
+
+! EXPR_VARIABLE
+!$acc enter data copyin(z%re)    ! { dg-error "Unexpected complex-parts designator" }
+!$acc enter data copyin(z%im)    ! { dg-error "Unexpected complex-parts designator" }
+!$acc enter data copyin(zz%re)   ! { dg-error "not a proper array section" }
+                                 ! { dg-error "Array is not contiguous" "" { target *-*-* } .-1 }
+!$acc enter data copyin(zz%im)   ! { dg-error "not a proper array section" }
+                                 ! { dg-error "Array is not contiguous" "" { target *-*-* } .-1 }
+
+!$acc enter data copyin(x%z%re)  ! { dg-error "Unexpected complex-parts designator" }
+!$acc enter data copyin(x%z%im)  ! { dg-error "Unexpected complex-parts designator" }
+!$acc enter data copyin(x%zz%re) ! { dg-error "not a proper array section" }
+                                 ! { dg-error "Array is not contiguous" "" { target *-*-* } .-1 }
+!$acc enter data copyin(x%zz%im) ! { dg-error "not a proper array section" }
+                                 ! { dg-error "Array is not contiguous" "" { target *-*-* } .-1 }
+
+!$acc update self(z%re)         ! { dg-error "Unexpected complex-parts designator" }
+!$acc update self(z%im)         ! { dg-error "Unexpected complex-parts designator" }
+!$acc update self(zz%re)        ! { dg-error "not a proper array section" }
+                                ! { dg-error "Array is not contiguous" "" { target *-*-* } .-1 }
+!$acc update self(zz%im)        ! { dg-error "not a proper array section" }
+                                ! { dg-error "Array is not contiguous" "" { target *-*-* } .-1 }
+
+!$acc update self(x%z%re)       ! { dg-error "Unexpected complex-parts designator" }
+!$acc update self(x%z%im)       ! { dg-error "Unexpected complex-parts designator" }
+!$acc update self(x%zz%re)      ! { dg-error "is not a proper array section" }
+                                ! { dg-error "Array is not contiguous" "" { target *-*-* } .-1 }
+!$acc update self(x%zz%im)      ! { dg-error "is not a proper array section" }
+                                ! { dg-error "Array is not contiguous" "" { target *-*-* } .-1 }
+end
diff --git a/gcc/testsuite/gfortran.dg/gomp/ref_inquiry.f90 b/gcc/testsuite/gfortran.dg/gomp/ref_inquiry.f90
new file mode 100644
index 00000000000..37461040560
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/gomp/ref_inquiry.f90
@@ -0,0 +1,39 @@
+! Check for <var>%re, ...%im, ...%kind, ...%len
+! Cf. also OpenACC's ../goacc/ref_inquiry.f90
+! Cf. also OpenMP spec issue 2661
+implicit none
+type t
+  integer :: i
+  character :: c
+  complex :: z
+  complex :: zz(5)
+end type t
+
+integer :: i
+character(kind=4, len=5) :: c
+complex :: z, zz(5)
+type(t) :: x
+
+print *, is_contiguous(zz(:)%re)
+
+! inquiry function; expr_type != EXPR_VARIABLE:
+!$omp target enter data map(to: i%kind, c%len)     ! { dg-error "not a proper array section" }
+!$omp target enter data map(to: x%i%kind)          ! { dg-error "not a proper array section" }
+!$omp target enter data map(to: x%c%len)           ! { dg-error "not a proper array section" }
+
+! EXPR_VARIABLE
+!$omp target enter data map(to: z%re)    ! { dg-error "Unexpected complex-parts designator" }
+!$omp target enter data map(to: z%im)    ! { dg-error "Unexpected complex-parts designator" }
+!$omp target enter data map(to: zz%re)   ! { dg-error "not a proper array section" }
+                                         ! { dg-error "Array is not contiguous" "" { target *-*-* } .-1 }
+!$omp target enter data map(to: zz%im)   ! { dg-error "not a proper array section" }
+                                         ! { dg-error "Array is not contiguous" "" { target *-*-* } .-1 }
+
+!$omp target enter data map(to: x%z%re)  ! { dg-error "Unexpected complex-parts designator" }
+!$omp target enter data map(to: x%z%im)  ! { dg-error "Unexpected complex-parts designator" }
+!$omp target enter data map(to: x%zz%re) ! { dg-error "not a proper array section" }
+                                         ! { dg-error "Array is not contiguous" "" { target *-*-* } .-1 }
+!$omp target enter data map(to: x%zz%im) ! { dg-error "not a proper array section" }
+                                         ! { dg-error "Array is not contiguous" "" { target *-*-* } .-1 }
+
+end