From 45d0cbb4c722d84eb178515a205f58d4b4434c87 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Konstantin=20K=C3=A4fer?= <mail@kkaefer.com>
Date: Fri, 26 Jun 2015 19:37:11 +0200
Subject: [PATCH] add assert_always() macro for release build assertions

---
 src/mbgl/util/assert.hpp      | 13 +++++++++++++
 test/miscellaneous/assert.cpp |  9 +++++++++
 test/test.gypi                |  1 +
 3 files changed, 23 insertions(+)
 create mode 100644 src/mbgl/util/assert.hpp
 create mode 100644 test/miscellaneous/assert.cpp

diff --git a/src/mbgl/util/assert.hpp b/src/mbgl/util/assert.hpp
new file mode 100644
index 000000000..0c2f63f8f
--- /dev/null
+++ b/src/mbgl/util/assert.hpp
@@ -0,0 +1,13 @@
+#ifndef MBGL_UTIL_ASSERT
+#define MBGL_UTIL_ASSERT
+
+#include <cassert>
+
+// Based on FreeBSD's src/include/assert.h
+// Licensed under the original BSD license
+#define assert_always(expr)                                                                        \
+    ((void)((expr) ? ((void)0) : ((void)fprintf(stderr, "%s:%u: failed assertion `%s'\n",          \
+                                                __FILE__, __LINE__, #expr),                        \
+                                  abort())))
+
+#endif
diff --git a/test/miscellaneous/assert.cpp b/test/miscellaneous/assert.cpp
new file mode 100644
index 000000000..f3eba009f
--- /dev/null
+++ b/test/miscellaneous/assert.cpp
@@ -0,0 +1,9 @@
+#include "../fixtures/util.hpp"
+
+#include <mbgl/util/assert.hpp>
+
+using namespace mbgl;
+
+TEST(Assert, Always) {
+    EXPECT_DEATH(assert_always(true == false), "failed assertion `true == false'");
+}
diff --git a/test/test.gypi b/test/test.gypi
index 374e81344..f3d6976dd 100644
--- a/test/test.gypi
+++ b/test/test.gypi
@@ -41,6 +41,7 @@
 
         'headless/headless.cpp',
 
+        'miscellaneous/assert.cpp',
         'miscellaneous/clip_ids.cpp',
         'miscellaneous/binpack.cpp',
         'miscellaneous/bilinear.cpp',