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C++ PATCH for c++/51416 (ICE on invalid auto)
- From: Jason Merrill <jason at redhat dot com>
- To: gcc-patches List <gcc-patches at gcc dot gnu dot org>
- Date: Fri, 16 Dec 2011 22:26:31 -0500
- Subject: C++ PATCH for c++/51416 (ICE on invalid auto)
When there are no arguments for a parameter pack, an expansion between
parens in a variable initializer reduces to value-initialization. This
isn't valid for auto. Fixed by checking for incomplete type.
Tested x86_64-pc-linux-gnu, applying to trunk.
commit 380724b25cd317ea8b6434cdd1215e831ac2dcde
Author: Jason Merrill <jason@redhat.com>
Date: Fri Dec 16 18:31:01 2011 -0500
PR c++/51416
* init.c (build_value_init_noctor): Check for incomplete type.
diff --git a/gcc/testsuite/g++.dg/cpp0x/auto31.C b/gcc/testsuite/g++.dg/cpp0x/auto31.C
new file mode 100644
index 0000000..26a6560
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/auto31.C
@@ -0,0 +1,12 @@
+// PR c++/51416
+// { dg-do compile { target c++11 } }
+
+template<typename T, typename... U> void foo(T, U... u)
+{
+ auto foo(u...); // { dg-error "auto" }
+}
+
+void bar()
+{
+ foo(0);
+}
diff --git a/gcc/testsuite/g++.dg/cpp0x/variadic103.C b/gcc/testsuite/g++.dg/cpp0x/variadic103.C
index 6d12331..9d6b5ea 100644
--- a/gcc/testsuite/g++.dg/cpp0x/variadic103.C
+++ b/gcc/testsuite/g++.dg/cpp0x/variadic103.C
@@ -5,7 +5,7 @@ T&& create();
template<class T, class... Args>
void test() {
- T t(create<Args>()...); // { dg-error "unknown bound" }
+ T t(create<Args>()...); // { dg-error "incomplete" }
(void) t;
}