From: Jason Merrill <jason@redhat.com>
Date: Thu, 1 Apr 2021 19:17:40 +0000 (-0400)
Subject: c++: variadic lambda noexcept-specifier [PR99583]
X-Git-Tag: upstream/12.2.0~9001
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0cf4813202f19768e31666f6aa82bde4dce4065a;p=platform%2Fupstream%2Fgcc.git

c++: variadic lambda noexcept-specifier [PR99583]

The tree-walk looking for parameter packs didn't find this one because we
weren't stepping into TYPE_RAISES_EXCEPTIONS.

gcc/cp/ChangeLog:

	PR c++/99583
	PR c++/99584
	* tree.c (cp_walk_subtrees) [FUNCTION_TYPE]: Walk into
	TYPE_RAISES_EXCEPTIONS.

gcc/testsuite/ChangeLog:

	PR c++/99583
	* g++.dg/cpp0x/lambda/lambda-variadic12.C: New test.
---

diff --git a/gcc/cp/tree.c b/gcc/cp/tree.c
index dca947b..13cc61c 100644
--- a/gcc/cp/tree.c
+++ b/gcc/cp/tree.c
@@ -5415,6 +5415,11 @@ cp_walk_subtrees (tree *tp, int *walk_subtrees_p, walk_tree_fn func,
 	}
       break;
 
+    case FUNCTION_TYPE:
+    case METHOD_TYPE:
+      WALK_SUBTREE (TYPE_RAISES_EXCEPTIONS (*tp));
+      break;
+
     default:
       return NULL_TREE;
     }
diff --git a/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-variadic12.C b/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-variadic12.C
new file mode 100644
index 0000000..6746157
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/lambda/lambda-variadic12.C
@@ -0,0 +1,9 @@
+// PR c++/99583
+// { dg-do compile { target c++11 } }
+
+void f(...);
+
+template <bool... B>
+void g() {
+ f([]() noexcept(B) {} ...);
+}