From a74979ff72d7ab86faf463c509591f5c2e080ce9 Mon Sep 17 00:00:00 2001
From: fishpepper <fishpepper@gmail.com>
Date: Tue, 15 Aug 2017 21:07:14 +0200
Subject: [PATCH] fix dangerous MIN/MAX/ABS definitions

---
 src/main/common/maths.h | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/src/main/common/maths.h b/src/main/common/maths.h
index 5a0bdcb596..fea305032b 100644
--- a/src/main/common/maths.h
+++ b/src/main/common/maths.h
@@ -37,9 +37,17 @@
 
 #define CM_S_TO_KM_H(centimetersPerSecond) (centimetersPerSecond * 36 / 1000)
 
-#define MIN(a, b) ((a) < (b) ? (a) : (b))
-#define MAX(a, b) ((a) > (b) ? (a) : (b))
-#define ABS(x) ((x) > 0 ? (x) : -(x))
+#define MIN(a,b) \
+  __extension__ ({ __typeof__ (a) _a = (a); \
+  __typeof__ (b) _b = (b); \
+  _a < _b ? _a : _b; })
+#define MAX(a,b) \
+  __extension__ ({ __typeof__ (a) _a = (a); \
+  __typeof__ (b) _b = (b); \
+  _a > _b ? _a : _b; })
+#define ABS(x) \
+  __extension__ ({ __typeof__ (x) _x = (x); \
+  _x > 0 ? _x : -_x; })
 
 #define Q12 (1 << 12)