From 351793f93fb25a486b3a5806e93ca3bc3ffdff52 Mon Sep 17 00:00:00 2001
From: jzmaddock <john@johnmaddock.co.uk>
Date: Tue, 10 May 2016 18:06:15 +0100
Subject: [PATCH] Prevent mpfr_float compiling when there variable digits and
 allocation is allocate_stack.

---
 include/boost/multiprecision/mpfr.hpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/include/boost/multiprecision/mpfr.hpp b/include/boost/multiprecision/mpfr.hpp
index 591469b5..a04a3f2f 100644
--- a/include/boost/multiprecision/mpfr.hpp
+++ b/include/boost/multiprecision/mpfr.hpp
@@ -30,6 +30,9 @@ namespace backends{
 template <unsigned digits10, mpfr_allocation_type AllocationType = allocate_dynamic>
 struct mpfr_float_backend;
 
+template <>
+struct mpfr_float_backend<0, allocate_stack>;
+
 } // namespace backends
 
 template <unsigned digits10, mpfr_allocation_type AllocationType>