re PR fortran/78672 (Gfortran test suite failures with a sanitized compiler)

gcc/fortran/ChangeLog:

2016-12-14  Andre Vehreschild  <vehre@gcc.gnu.org>

	PR fortran/78672
	* array.c (gfc_find_array_ref): Add flag to return NULL when no ref is
	found instead of erroring out.
	* data.c (gfc_assign_data_value): Only constant expressions are valid
	for initializers.
	* gfortran.h: Reflect change of gfc_find_array_ref's signature.
	* interface.c (compare_actual_formal): Access the non-elemental
	array-ref.  Prevent taking a REF_COMPONENT for a REF_ARRAY.  Correct
	indentation.
	* module.c (load_omp_udrs): Clear typespec before reading into it.
	* trans-decl.c (gfc_build_qualified_array): Prevent accessing the array
	when it is a coarray.
	* trans-expr.c (gfc_conv_cst_int_power): Use wi::abs()-function instead
	of crutch preventing sanitizer's bickering here.
	* trans-stmt.c (gfc_trans_deallocate): Only get data-component when it
	is a descriptor-array here.

From-SVN: r243647

1 files changed, 7 insertions, 2 deletions

diff --git a/gcc/fortran/array.c b/gcc/fortran/array.c
index 154b860..c531522 100644
--- a/gcc/fortran/array.c
+++ b/gcc/fortran/array.c
@@ -2563,7 +2563,7 @@ cleanup:
    characterizes the reference.  */
 
 gfc_array_ref *
-gfc_find_array_ref (gfc_expr *e)
+gfc_find_array_ref (gfc_expr *e, bool allow_null)
 {
   gfc_ref *ref;
 
@@ -2573,7 +2573,12 @@ gfc_find_array_ref (gfc_expr *e)
       break;
 
   if (ref == NULL)
-    gfc_internal_error ("gfc_find_array_ref(): No ref found");
+    {
+      if (allow_null)
+	return NULL;
+      else
+	gfc_internal_error ("gfc_find_array_ref(): No ref found");
+    }
 
   return &ref->u.ar;
 }