[PATCH] PR fortran/93834 - [9/10/11/12 Regression] ICE in trans_caf_is_present, at fortran/trans-intrinsic.c:8469

[Harald Anlauf via Gcc-patches]

Dear Fortranners,

here's a pretty obvious one: we didn't properly check the arguments
for intrinsics when these had to be ALLOCATABLE and in the case that
argument was a coarray object.  Simple solution: just reuse a check
that was used for pointer etc.

Regtested on x86_64-pc-linux-gnu.  OK for mainline / backports?

Thanks,
Harald


Fortran - extend allocatable_check to coarrays

gcc/fortran/ChangeLog:

        PR fortran/93834
        * check.c (allocatable_check): A coindexed array element is not an
        allocatable object.

gcc/testsuite/ChangeLog:

        PR fortran/93834
        * gfortran.dg/coarray_allocated.f90: New test.


diff --git a/gcc/fortran/check.c b/gcc/fortran/check.c
index 851af1b30dc..a293a7b9592 100644
--- a/gcc/fortran/check.c
+++ b/gcc/fortran/check.c
@@ -983,6 +983,14 @@ allocatable_check (gfc_expr *e, int n)
       return false;
     }

+  if (attr.codimension && gfc_is_coindexed (e))
+    {
+      gfc_error ("%qs argument of %qs intrinsic at %L shall not be "
+		 "coindexed", gfc_current_intrinsic_arg[n]->name,
+		 gfc_current_intrinsic, &e->where);
+      return false;
+    }
+
   return true;
 }

diff --git a/gcc/testsuite/gfortran.dg/coarray_allocated.f90 b/gcc/testsuite/gfortran.dg/coarray_allocated.f90
new file mode 100644
index 00000000000..70e865c94ac
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/coarray_allocated.f90
@@ -0,0 +1,9 @@
+! { dg-do compile }
+! { dg-options "-fcoarray=lib" }
+! PR fortran/93834 - ICE in trans_caf_is_present
+
+program p
+  integer, allocatable :: a[:]
+  print *, allocated (a)
+  print *, allocated (a[1]) ! { dg-error "shall not be coindexed" }
+end