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[pushed] c++: Add testcase for already fixed PR [PR94102]

Message ID 20210429173805.322473-1-polacek@redhat.com
State New
Headers show
Series [pushed] c++: Add testcase for already fixed PR [PR94102] | expand

Commit Message

Marek Polacek April 29, 2021, 5:38 p.m. UTC 
We correctly accept this testcase since r11-1571.

Tested x86_64-pc-linux-gnu, applying to trunk.

gcc/testsuite/ChangeLog:

	PR c++/94102
	* g++.dg/cpp1z/class-deduction87.C: New test.
---
 gcc/testsuite/g++.dg/cpp1z/class-deduction87.C | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/cpp1z/class-deduction87.C


base-commit: fb9f5e1028df0fe6f2ff9d220efd75970e46bff0
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Patch

diff --git a/gcc/testsuite/g++.dg/cpp1z/class-deduction87.C b/gcc/testsuite/g++.dg/cpp1z/class-deduction87.C
new file mode 100644
index 00000000000..37296a435c4
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp1z/class-deduction87.C
@@ -0,0 +1,15 @@ 
+// PR c++/94102
+// { dg-do compile { target c++17 } }
+
+namespace std {
+  template <typename _Tp> using decay_t = _Tp;
+}
+template <typename... B> struct Merged : B... {
+  template <typename... T> Merged(T... t) : B(t)... {}
+};
+template <typename... T> Merged(T...) -> Merged<std::decay_t<T>...>;
+int main() {
+  auto l1 = [] {};
+  auto l2 = [](int i) { return i; };
+  Merged(l1, l2);
+}