# HG changeset patch
# User Jonathan G Rennison <j.g.rennison@gmail.com>
# Date 2016-09-05 00:18:09
# Node ID 0dbd28aa2fc47458aed6761ee7a4760dcacd0bf9
# Parent  f038998948c2f414188416a45c4b045afc92e528

Codechange: Add support for verbose asserts

diff --git a/src/openttd.cpp b/src/openttd.cpp
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -129,7 +129,7 @@ void CDECL usererror(const char *s, ...)
 void CDECL error(const char *s, ...)
 {
 	va_list va;
-	char buf[512];
+	char buf[2048];
 
 	va_start(va, s);
 	vseprintf(buf, lastof(buf), s, va);
diff --git a/src/stdafx.h b/src/stdafx.h
--- a/src/stdafx.h
+++ b/src/stdafx.h
@@ -430,6 +430,9 @@ void NORETURN CDECL error(const char *st
 /* Asserts are enabled if NDEBUG isn't defined or WITH_ASSERT is defined. */
 #if !defined(NDEBUG) || defined(WITH_ASSERT)
 #	define OTTD_ASSERT
+#	define assert_msg(expression, msg, ...) if (!(expression)) error("Assertion failed at line %i of %s: %s\n\t" msg, __LINE__, __FILE__, #expression, __VA_ARGS__);
+#else
+#	define assert_msg(expression, msg, ...)
 #endif
 
 #if defined(OPENBSD)