[gcc r12-6864] Fortran: optional argument DIM for intrinsics NORM2, PARITY must be scalar

[Harald Anlauf]

https://gcc.gnu.org/g:34e8dafb76240f69c729c11cfc8c8fc4f717bc17

commit r12-6864-g34e8dafb76240f69c729c11cfc8c8fc4f717bc17
Author: Harald Anlauf <anlauf@gmx.de>
Date:   Mon Jan 24 21:40:41 2022 +0100

    Fortran: optional argument DIM for intrinsics NORM2, PARITY must be scalar
    
    gcc/fortran/ChangeLog:
    
            PR fortran/104212
            * check.cc (gfc_check_norm2): Check that optional argument DIM is
            scalar.
            (gfc_check_parity): Likewise.
    
    gcc/testsuite/ChangeLog:
    
            PR fortran/104212
            * gfortran.dg/argument_checking_26.f90: New test.

Diff:
---
 gcc/fortran/check.cc                               |  6 ++++++
 gcc/testsuite/gfortran.dg/argument_checking_26.f90 | 14 ++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/gcc/fortran/check.cc b/gcc/fortran/check.cc
index 5fe8d452413..4fa05ee7e9b 100644
--- a/gcc/fortran/check.cc
+++ b/gcc/fortran/check.cc
@@ -4338,6 +4338,9 @@ gfc_check_norm2 (gfc_expr *array, gfc_expr *dim)
   if (!array_check (array, 0))
     return false;
 
+  if (!dim_check (dim, 1, false))
+    return false;
+
   if (!dim_rank_check (dim, array, false))
     return false;
 
@@ -4476,6 +4479,9 @@ gfc_check_parity (gfc_expr *mask, gfc_expr *dim)
   if (!array_check (mask, 0))
     return false;
 
+  if (!dim_check (dim, 1, false))
+    return false;
+
   if (!dim_rank_check (dim, mask, false))
     return false;
 
diff --git a/gcc/testsuite/gfortran.dg/argument_checking_26.f90 b/gcc/testsuite/gfortran.dg/argument_checking_26.f90
new file mode 100644
index 00000000000..2b765c5f866
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/argument_checking_26.f90
@@ -0,0 +1,14 @@
+! { dg-do compile }
+! PR fortran/104212 - ICE in transformational_result
+! Contributed by G.Steinmetz
+
+program p
+  logical, parameter :: a(*,*) = reshape([.true.,.false.], shape=[1,2])
+  real,    parameter :: r(*,*) = reshape([1.,2.], shape=[1,2])
+  print *, parity(a)
+  print *, parity(a, dim=1)
+  print *, parity(a, dim=[1]) ! { dg-error "must be a scalar" }
+  print *, norm2 (r)
+  print *, norm2 (r, dim=1)
+  print *, norm2 (r, dim=[1]) ! { dg-error "must be a scalar" }
+end