re PR c++/69057 ([C++14] constexpr static variable template assertion segmentation fault)

2017-10-18  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/69057
	* g++.dg/cpp1y/auto-fn45.C: New.

From-SVN: r253844

gcc/testsuite/ChangeLog

 2017-10-18  Paolo Carlini  <paolo.carlini@oracle.com>
 
+	PR c++/69057
+	* g++.dg/cpp1y/auto-fn45.C: New.
+
+2017-10-18  Paolo Carlini  <paolo.carlini@oracle.com>
+
 	PR c++/68884
 	* g++.dg/cpp0x/variadic-crash4.C: New.
 

gcc/testsuite/g++.dg/cpp1y/auto-fn45.C

+// PR c++/69057
+// { dg-do compile { target c++14 } }
+
+#include <cassert>
+
+using GLenum = unsigned int;
+
+template <typename T>
+inline constexpr auto from_enum(const T& x) noexcept
+{
+    // Comment this line to prevent segmentation fault:
+    assert(true);
+    // ------------------------------------------------
+
+    return (GLenum)x;
+}
+
+enum class buffer_target : GLenum
+{
+    array
+};
+
+struct vbo
+{
+    static constexpr GLenum target_value{from_enum(buffer_target::array)};
+    GLenum x{target_value};
+};