From 39645390ffc265b28ee9c8265c1f7e4736e3148c Mon Sep 17 00:00:00 2001
From: Soonho Kong <soonhok@cs.cmu.edu>
Date: Mon, 6 Oct 2014 22:36:22 -0700
Subject: [PATCH] chore(util/*): add cstddef header before including
 gmp.h/mpfr.h
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Reference: https://gcc.gnu.org/gcc-4.9/porting_to.html

------

Header <cstddef> changes

The <cstddef> header was updated for C++11 support and this breaks some
libraries which misuse macros meant for internal use by GCC only. For
instance with GMP versions up to 5.1.3, you may see:

/usr/include/c++/4.9.0/cstddef:51:11: error: ‘::max_align_t’ has not been declared
   using ::max_align_t;
           ^
Another possible error is:

someheader.h:99:13: error: ‘ptrdiff_t’ does not name a type

A workaround until libraries get updated is to include <cstddef> or
<stddef.h> before any headers from that library.
---
 src/util/interval/interval.cpp    | 1 +
 src/util/numerics/double.h        | 1 +
 src/util/numerics/float.h         | 1 +
 src/util/numerics/init_module.cpp | 1 +
 src/util/numerics/mpfp.h          | 1 +
 src/util/numerics/mpz.h           | 1 +
 6 files changed, 6 insertions(+)

diff --git a/src/util/interval/interval.cpp b/src/util/interval/interval.cpp
index 36fcde31e..6fc5000fd 100644
--- a/src/util/interval/interval.cpp
+++ b/src/util/interval/interval.cpp
@@ -6,6 +6,7 @@ Author: Leonardo de Moura
         Soonho Kong
 */
 #pragma once
+#include <cstddef>
 #include <gmp.h>
 #include <mpfr.h>
 #include <utility>
diff --git a/src/util/numerics/double.h b/src/util/numerics/double.h
index 4a908f411..34d4e84e6 100644
--- a/src/util/numerics/double.h
+++ b/src/util/numerics/double.h
@@ -5,6 +5,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Author: Soonho Kong
 */
 #pragma once
+#include <cstddef>
 #include <mpfr.h>
 #include "util/numerics/mpfp.h"
 
diff --git a/src/util/numerics/float.h b/src/util/numerics/float.h
index c9cd5796e..7a11d842e 100644
--- a/src/util/numerics/float.h
+++ b/src/util/numerics/float.h
@@ -5,6 +5,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Author: Soonho Kong
 */
 #pragma once
+#include <cstddef>
 #include <mpfr.h>
 #include "util/numerics/mpfp.h"
 
diff --git a/src/util/numerics/init_module.cpp b/src/util/numerics/init_module.cpp
index c3ae5aa21..4ad081f3e 100644
--- a/src/util/numerics/init_module.cpp
+++ b/src/util/numerics/init_module.cpp
@@ -4,6 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 
 Author: Leonardo de Moura
 */
+#include <cstddef>
 #include <gmp.h>
 #include "util/memory.h"
 #include "util/numerics/mpz.h"
diff --git a/src/util/numerics/mpfp.h b/src/util/numerics/mpfp.h
index 0c0c37218..ab9f9deb1 100644
--- a/src/util/numerics/mpfp.h
+++ b/src/util/numerics/mpfp.h
@@ -6,6 +6,7 @@ Author: Soonho Kong
 */
 #pragma once
 #include <stdint.h>
+#include <cstddef>
 #include <mpfr.h>
 #include "util/numerics/mpz.h"
 #include "util/numerics/mpq.h"
diff --git a/src/util/numerics/mpz.h b/src/util/numerics/mpz.h
index c872e6207..84ccb7915 100644
--- a/src/util/numerics/mpz.h
+++ b/src/util/numerics/mpz.h
@@ -5,6 +5,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Author: Leonardo de Moura
 */
 #pragma once
+#include <cstddef>
 #include <gmp.h>
 #include <iostream>
 #include "util/debug.h"