From 7b09b2c7959801e13e05dbf0c0cc81b3dc31c274 Mon Sep 17 00:00:00 2001
From: James Folberth <jamesfolberth@gmail.com>
Date: Sun, 6 Feb 2022 00:11:21 -0700
Subject: [PATCH] provide overload in test_dist_deduction_guides.cpp for GCC-8

---
 test/test_dist_deduction_guides.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/test/test_dist_deduction_guides.cpp b/test/test_dist_deduction_guides.cpp
index ac8f0b133f..f169d85d21 100644
--- a/test/test_dist_deduction_guides.cpp
+++ b/test/test_dist_deduction_guides.cpp
@@ -54,6 +54,14 @@ void test_deduction_guide(Types... types)
    static_assert(std::is_same<typename decltype(d)::value_type, PromType>::value);
 }
 
+// GCC-8 doesn't like deduction guides + empty variadic template? Handjam this overload
+template <template<class, class> class DistType, class PromType = double>
+void test_deduction_guide()
+{
+   DistType d;
+   static_assert(std::is_same<typename decltype(d)::value_type, PromType>::value);
+}
+
 int main()
 {
    using namespace boost::math;