From: Jason Merrill <jason@redhat.com>
Date: Fri, 17 Jun 2011 20:07:45 +0000 (-0400)
Subject: parser.c (cp_parser_lambda_expression): Clear LAMBDA_EXPR_THIS_CAPTURE after parsing.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=806010b9faf8e87d4bbdb01f0912801796f30708;p=gcc.git

parser.c (cp_parser_lambda_expression): Clear LAMBDA_EXPR_THIS_CAPTURE after parsing.

	* parser.c (cp_parser_lambda_expression): Clear
	LAMBDA_EXPR_THIS_CAPTURE after parsing.
	* pt.c (tsubst_copy_and_build): Make sure it isn't set.

From-SVN: r175156
---

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index e90d12da42c..baa4899743c 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,5 +1,9 @@
 2011-06-17  Jason Merrill  <jason@redhat.com>
 
+	* parser.c (cp_parser_lambda_expression): Clear
+	LAMBDA_EXPR_THIS_CAPTURE after parsing.
+	* pt.c (tsubst_copy_and_build): Make sure it isn't set.
+
 	* cp-tree.h (struct tree_lambda_expr): Change common to typed.
 	Move non-pointers to end of struct.
 
diff --git a/gcc/cp/cp-tree.h b/gcc/cp/cp-tree.h
index ee303fec883..cf1c5927cb0 100644
--- a/gcc/cp/cp-tree.h
+++ b/gcc/cp/cp-tree.h
@@ -625,7 +625,8 @@ enum cp_lambda_default_capture_mode_type {
 #define LAMBDA_EXPR_CAPTURE_LIST(NODE) \
   (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->capture_list)
 
-/* The node in the capture-list that holds the 'this' capture.  */
+/* During parsing of the lambda, the node in the capture-list that holds
+   the 'this' capture.  */
 #define LAMBDA_EXPR_THIS_CAPTURE(NODE) \
   (((struct tree_lambda_expr *)LAMBDA_EXPR_CHECK (NODE))->this_capture)
 
diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c
index 5ea04b56cb5..a9cedcf38ab 100644
--- a/gcc/cp/parser.c
+++ b/gcc/cp/parser.c
@@ -7430,6 +7430,9 @@ cp_parser_lambda_expression (cp_parser* parser)
 
   pop_deferring_access_checks ();
 
+  /* This field is only used during parsing of the lambda.  */
+  LAMBDA_EXPR_THIS_CAPTURE (lambda_expr) = NULL_TREE;
+
   if (ok)
     return build_lambda_object (lambda_expr);
   else
diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index 308aff7bc48..ca4f955cc12 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -13498,10 +13498,9 @@ tsubst_copy_and_build (tree t,
 	  = (LAMBDA_EXPR_DISCRIMINATOR (t));
 	LAMBDA_EXPR_CAPTURE_LIST (r)
 	  = RECUR (LAMBDA_EXPR_CAPTURE_LIST (t));
-	LAMBDA_EXPR_THIS_CAPTURE (r)
-	  = RECUR (LAMBDA_EXPR_THIS_CAPTURE (t));
 	LAMBDA_EXPR_EXTRA_SCOPE (r)
 	  = RECUR (LAMBDA_EXPR_EXTRA_SCOPE (t));
+	gcc_assert (LAMBDA_EXPR_THIS_CAPTURE (t) == NULL_TREE);
 
 	/* Do this again now that LAMBDA_EXPR_EXTRA_SCOPE is set.  */
 	determine_visibility (TYPE_NAME (type));