re PR middle-end/85956 (ICE in wide_int_to_tree_1, at tree.c:1549)

	PR middle-end/85956
	PR lto/88733
	* tree-inline.h (struct copy_body_data): Add adjust_array_error_bounds
	field.
	* tree-inline.c (remap_type_1): Formatting fix.  If TYPE_MAX_VALUE of
	ARRAY_TYPE's TYPE_DOMAIN is newly error_mark_node, replace it with
	a dummy "omp dummy var" variable if id->adjust_array_error_bounds.
	* omp-low.c (new_omp_context): Set cb.adjust_array_error_bounds.
fortran/
	* trans-openmp.c: Include attribs.h.
	(gfc_walk_alloc_comps, gfc_omp_clause_linear_ctor): Handle
	VAR_DECL max bound with "omp dummy var" attribute like NULL or
	error_mark_node - recompute number of elts independently.
testsuite/
	* c-c++-common/gomp/pr85956.c: New test.
	* g++.dg/gomp/pr88733.C: New test.

From-SVN: r267858

gcc/ChangeLog

+2019-01-11  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/85956
+	PR lto/88733
+	* tree-inline.h (struct copy_body_data): Add adjust_array_error_bounds
+	field.
+	* tree-inline.c (remap_type_1): Formatting fix.  If TYPE_MAX_VALUE of
+	ARRAY_TYPE's TYPE_DOMAIN is newly error_mark_node, replace it with
+	a dummy "omp dummy var" variable if id->adjust_array_error_bounds.
+	* omp-low.c (new_omp_context): Set cb.adjust_array_error_bounds.
+
 2019-01-11  Vladimir Makarov  <vmakarov@redhat.com>
 
 	PR rtl-optimization/87305

gcc/fortran/ChangeLog

+2019-01-11  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/85956
+	PR lto/88733
+	* trans-openmp.c: Include attribs.h.
+	(gfc_walk_alloc_comps, gfc_omp_clause_linear_ctor): Handle
+	VAR_DECL max bound with "omp dummy var" attribute like NULL or
+	error_mark_node - recompute number of elts independently.
+
 2019-01-11  Thomas Koenig  <tkoenig@gcc.gnu.org>
 
 	PR fortran/59345
-	* trans-array.c (gfc_conv_parameter_array):  Temporary
+	* trans-array.c (gfc_conv_parameter_array): Temporary
 	arrays generated for expressions do not need to be repacked.
 
 2019-01-10  Steven G. Kargl  <kargl@gcc.gnu.org>
@@ -103,7 +112,7 @@
 
 2019-01-01  Steven G. Kargl  <kargl@gcc.gnu.org>
 
-	* parse.c (decode_statement):  Suppress "Unclassifiable statement"
+	* parse.c (decode_statement): Suppress "Unclassifiable statement"
 	error if previous error messages were emittes.
 
 2019-01-01  Thomas Koenig  <tkoenig@gcc.gnu.org>

gcc/fortran/trans-openmp.c

@@ -43,6 +43,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "diagnostic-core.h"
 #undef GCC_DIAG_STYLE
 #define GCC_DIAG_STYLE __gcc_gfc__
+#include "attribs.h"
 
 int ompws_flags;
 
@@ -297,10 +298,19 @@ gfc_walk_alloc_comps (tree decl, tree dest, tree var,
 	}
       else
 	{
+	  bool compute_nelts = false;
 	  if (!TYPE_DOMAIN (type)
 	      || TYPE_MAX_VALUE (TYPE_DOMAIN (type)) == NULL_TREE
 	      || TYPE_MIN_VALUE (TYPE_DOMAIN (type)) == error_mark_node
 	      || TYPE_MAX_VALUE (TYPE_DOMAIN (type)) == error_mark_node)
+	    compute_nelts = true;
+	  else if (VAR_P (TYPE_MAX_VALUE (TYPE_DOMAIN (type))))
+	    {
+	      tree a = DECL_ATTRIBUTES (TYPE_MAX_VALUE (TYPE_DOMAIN (type)));
+	      if (lookup_attribute ("omp dummy var", a))
+		compute_nelts = true;
+	    }
+	  if (compute_nelts)
 	    {
 	      tem = fold_build2 (EXACT_DIV_EXPR, sizetype,
 				 TYPE_SIZE_UNIT (type),
@@ -912,11 +922,20 @@ gfc_omp_clause_linear_ctor (tree clause, tree dest, tree src, tree add)
       && (!GFC_DECL_GET_SCALAR_ALLOCATABLE (OMP_CLAUSE_DECL (clause))
 	  || !POINTER_TYPE_P (type)))
     {
+      bool compute_nelts = false;
       gcc_assert (TREE_CODE (type) == ARRAY_TYPE);
       if (!TYPE_DOMAIN (type)
 	  || TYPE_MAX_VALUE (TYPE_DOMAIN (type)) == NULL_TREE
 	  || TYPE_MIN_VALUE (TYPE_DOMAIN (type)) == error_mark_node
 	  || TYPE_MAX_VALUE (TYPE_DOMAIN (type)) == error_mark_node)
+	compute_nelts = true;
+      else if (VAR_P (TYPE_MAX_VALUE (TYPE_DOMAIN (type))))
+	{
+	  tree a = DECL_ATTRIBUTES (TYPE_MAX_VALUE (TYPE_DOMAIN (type)));
+	  if (lookup_attribute ("omp dummy var", a))
+	    compute_nelts = true;
+	}
+      if (compute_nelts)
 	{
 	  nelems = fold_build2 (EXACT_DIV_EXPR, sizetype,
 				TYPE_SIZE_UNIT (type),

gcc/omp-low.c

@@ -872,6 +872,7 @@ new_omp_context (gimple *stmt, omp_context *outer_ctx)
     }
 
   ctx->cb.decl_map = new hash_map<tree, tree>;
+  ctx->cb.adjust_array_error_bounds = true;
 
   return ctx;
 }

gcc/testsuite/ChangeLog

+2019-01-11  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/85956
+	PR lto/88733
+	* c-c++-common/gomp/pr85956.c: New test.
+	* g++.dg/gomp/pr88733.C: New test.
+
 2019-01-11  Tobias Burnus  <burnus@net-b.de>
 
 	PR C++/88114

gcc/testsuite/c-c++-common/gomp/pr85956.c

+/* PR middle-end/85956 */
+/* { dg-do compile } */
+/* { dg-additional-options "-O2 -Wall" } */
+
+void
+foo (int n, void *p)
+{
+  int (*a)[n] = (int (*)[n]) p;
+  #pragma omp parallel shared(a) default(none)
+  #pragma omp master
+    a[-1][-1] = 42;	/* { dg-warning "array subscript -1 is below array bounds" } */
+}

gcc/testsuite/g++.dg/gomp/pr88733.C

+// PR lto/88733
+// { dg-do compile }
+// { dg-additional-options "-flto -ffat-lto-objects" { target lto } }
+
+struct A { int f; } a;
+
+__attribute__((noipa)) void
+bar (A **x, int)
+{
+  x[0] = &a;
+}
+
+int
+foo (int n)
+{
+  int g;
+  A *j[n];
+  bar (j, n);
+#pragma omp parallel
+#pragma omp single
+  g = j[0]->f;
+  return g;
+}
+
+int
+main ()
+{
+  foo (0);
+}

gcc/tree-inline.c

@@ -523,11 +523,27 @@ remap_type_1 (tree type, copy_body_data *id)
 
       if (TYPE_MAIN_VARIANT (new_tree) != new_tree)
 	{
-	  gcc_checking_assert (TYPE_DOMAIN (type) == TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)));
+	  gcc_checking_assert (TYPE_DOMAIN (type)
+			       == TYPE_DOMAIN (TYPE_MAIN_VARIANT (type)));
 	  TYPE_DOMAIN (new_tree) = TYPE_DOMAIN (TYPE_MAIN_VARIANT (new_tree));
 	}
       else
-	TYPE_DOMAIN (new_tree) = remap_type (TYPE_DOMAIN (new_tree), id);
+        {
+	  TYPE_DOMAIN (new_tree) = remap_type (TYPE_DOMAIN (new_tree), id);
+	  /* For array bounds where we have decided not to copy over the bounds
+	     variable which isn't used in OpenMP/OpenACC region, change them to
+	     an uninitialized VAR_DECL temporary.  */
+	  if (TYPE_MAX_VALUE (TYPE_DOMAIN (new_tree)) == error_mark_node
+	      && id->adjust_array_error_bounds
+	      && TYPE_MAX_VALUE (TYPE_DOMAIN (type)) != error_mark_node)
+	    {
+	      tree v = create_tmp_var (TREE_TYPE (TYPE_DOMAIN (new_tree)));
+	      DECL_ATTRIBUTES (v)
+		= tree_cons (get_identifier ("omp dummy var"), NULL_TREE,
+			     DECL_ATTRIBUTES (v));
+	      TYPE_MAX_VALUE (TYPE_DOMAIN (new_tree)) = v;
+	    }
+        }
       break;
 
     case RECORD_TYPE:

gcc/tree-inline.h

@@ -122,6 +122,10 @@ struct copy_body_data
   /* True if the location information will need to be reset.  */
   bool reset_location;
 
+  /* Replace error_mark_node as upper bound of array types with
+     an uninitialized VAR_DECL temporary.  */
+  bool adjust_array_error_bounds;
+
   /* A function to be called when duplicating BLOCK nodes.  */
   void (*transform_lang_insert_block) (tree);