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[committed] C++ PATCH to add test for c++/83856
- From: Marek Polacek <polacek at redhat dot com>
- To: GCC Patches <gcc-patches at gcc dot gnu dot org>
- Date: Sat, 1 Dec 2018 17:00:16 -0500
- Subject: [committed] C++ PATCH to add test for c++/83856
Tested x86_64-linux, applying to trunk.
2018-12-01 Marek Polacek <polacek@redhat.com>
PR c++/83856
* g++.dg/cpp1y/lambda-generic-83856.C: New test.
diff --git gcc/testsuite/g++.dg/cpp1y/lambda-generic-83856.C gcc/testsuite/g++.dg/cpp1y/lambda-generic-83856.C
new file mode 100644
index 00000000000..ab82b6241aa
--- /dev/null
+++ gcc/testsuite/g++.dg/cpp1y/lambda-generic-83856.C
@@ -0,0 +1,30 @@
+// PR c++/83856
+// { dg-do compile { target c++14 } }
+
+namespace std {
+template <typename _Tp> _Tp declval();
+template <class _E> class initializer_list {
+ _E *_M_len;
+
+public:
+ unsigned long size;
+ _E begin();
+};
+template <typename, unsigned> struct array { void operator[](long); };
+} // namespace std
+
+template <class> struct simd {
+ static int size();
+ template <class F> simd(F, decltype(std::declval<F>()(0)) * = nullptr) {}
+};
+template <class V, class... F>
+void test_tuples(std::initializer_list<std::array<float, 1>> data,
+ F... fun_pack) {
+ auto it = data.begin();
+ const int remaining = V::size();
+ [](...) {}((fun_pack([&](auto) { it[remaining]; }), 0)...);
+}
+
+void f() {
+ test_tuples<simd<float>>({}, [](simd<float>) {});
+}