re PR c++/84446 (ICE with broken lambda)

/cp
2018-02-20  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84446
	* parser.c (cp_parser_init_declarator): Don't call start_lambda_scope
	on error_mark_node.

/testsuite
2018-02-20  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84446
	* g++.dg/cpp0x/lambda/lambda-ice27.C: New.

From-SVN: r257841

gcc/cp/ChangeLog

+2018-02-20  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/84446
+	* parser.c (cp_parser_init_declarator): Don't call start_lambda_scope
+	on error_mark_node.
+
 2018-02-20  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/84445

gcc/cp/parser.c

@@ -19650,12 +19650,12 @@ cp_parser_init_declarator (cp_parser* parser,
 	     member templates.  The former involves deferring
 	     parsing of the initializer until end of class as with default
 	     arguments.  So right here we only handle the latter.  */
-	  if (!member_p && processing_template_decl)
+	  if (!member_p && processing_template_decl && decl != error_mark_node)
 	    start_lambda_scope (decl);
 	  initializer = cp_parser_initializer (parser,
 					       &is_direct_init,
 					       &is_non_constant_init);
-	  if (!member_p && processing_template_decl)
+	  if (!member_p && processing_template_decl && decl != error_mark_node)
 	    finish_lambda_scope ();
 	  if (initializer == error_mark_node)
 	    cp_parser_skip_to_end_of_statement (parser);

gcc/testsuite/ChangeLog

+2018-02-20  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/84446
+	* g++.dg/cpp0x/lambda/lambda-ice27.C: New.
+
 2018-02-20  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/84445

gcc/testsuite/g++.dg/cpp0x/lambda/lambda-ice27.C

+// PR c++/84446
+// { dg-do compile { target c++11 } }
+
+template<int> void foo()
+{
+  int i,
+  i = [] { virtual }();  // { dg-error "redeclaration|expected" }
+}