re PR lto/91572 (lto1: error: type variant has different ‘TREE_TYPE’ since r269862)

	PR lto/91572
	* tree.c (find_decls_types_in_node): Also walk TREE_PURPOSE of
	GIMPLE_ASM TREE_LIST operands.

	* g++.dg/lto/pr91572_0.C: New test.

From-SVN: r275266

gcc/ChangeLog

+2019-09-01  Jakub Jelinek  <jakub@redhat.com>
+
+	PR lto/91572
+	* tree.c (find_decls_types_in_node): Also walk TREE_PURPOSE of
+	GIMPLE_ASM TREE_LIST operands.
+
 2019-08-31  Gerald Pfeifer  <gerald@pfeifer.com>
 
 	* doc/generic.texi (Unary and Binary Expressions): Mark up

gcc/testsuite/ChangeLog

+2019-09-01  Jakub Jelinek  <jakub@redhat.com>
+
+	PR lto/91572
+	* g++.dg/lto/pr91572_0.C: New test.
+
 2019-08-30  Steven G. Kargl  <kargl@gcc.gnu.org>
 
 	PR fortran/91587

gcc/testsuite/g++.dg/lto/pr91572_0.C

+// PR lto/91572
+// { dg-lto-do link }
+// { dg-lto-options { { -O -fPIC -flto } } }
+// { dg-require-effective-target shared }
+// { dg-require-effective-target fpic }
+// { dg-extra-ld-options "-shared" }
+
+void foo (char);
+namespace N {
+  class A { A (); };
+  A::A () { asm ("" : : "g" (0)); }
+}

gcc/tree.c

@@ -6142,6 +6142,13 @@ find_decls_types_in_node (struct cgraph_node *n, class free_lang_data_d *fld)
 	    {
 	      tree arg = gimple_op (stmt, i);
 	      find_decls_types (arg, fld);
+	      /* find_decls_types doesn't walk TREE_PURPOSE of TREE_LISTs,
+		 which we need for asm stmts.  */
+	      if (arg
+		  && TREE_CODE (arg) == TREE_LIST
+		  && TREE_PURPOSE (arg)
+		  && gimple_code (stmt) == GIMPLE_ASM)
+		find_decls_types (TREE_PURPOSE (arg), fld);
 	    }
 	}
     }