tree.c (fld_simplified_type): Temporarily disable array simplification.

	* tree.c (fld_simplified_type): Temporarily disable array
	simplification.

	* gcc.c-torture/pr88140.c: New testcase.

From-SVN: r267398

gcc/ChangeLog

 2018-12-24  Jan Hubicka  <hubicka@ucw.cz>
+	
+	PR lto/88140
+	* tree.c (fld_simplified_type): Temporarily disable array
+	simplification.
+
+2018-12-24  Jan Hubicka  <hubicka@ucw.cz>
 
 	* lto-symtab.c (lto_symtab_merge_decls_2): Do not report ODR violations
 	for method whose basetype was already reported.

gcc/testsuite/ChangeLog

+2018-12-24  Jan Hubicka  <hubicka@ucw.cz>
+	
+	PR lto/88140
+	* gcc.c-torture/pr88140.c: New testcase.
+
 2018-12-24  Iain Sandoe  <iain@sandoe.co.uk>
 
 	PR testsuite/67974

gcc/testsuite/gcc.c-torture/pr88140.c

+typedef struct {
+} a;
+
+typedef struct {
+  a *b[0];
+} c;
+
+void d() { ((c *)0)->b[0] = 0; }
+
+typedef struct {
+} a;
+
+typedef struct {
+  a *b[0];
+} c;
+
+void d() { ((c *)0)->b[0] = 0; }
+
+

gcc/tree.c

@@ -5372,7 +5372,8 @@ fld_simplified_type (tree t, struct free_lang_data_d *fld)
     return t;
   if (POINTER_TYPE_P (t))
     return fld_incomplete_type_of (t, fld);
-  if (TREE_CODE (t) == ARRAY_TYPE)
+  /* FIXME: This triggers verification error, see PR88140.  */
+  if (TREE_CODE (t) == ARRAY_TYPE && 0)
     return fld_process_array_type (t, fld_simplified_type (TREE_TYPE (t), fld),
 				   fld_simplified_types, fld);
   return t;