From: Vincent van Ravesteijn <vfr@lyx.org>
Date: Fri, 5 Nov 2010 16:51:09 +0000 (+0000)
Subject: Add a static assert to prevent compilation on platforms where int/usigned int are... 
X-Git-Tag: 2.0.0~1991
X-Git-Url: https://git.lyx.org/gitweb/?a=commitdiff_plain;h=a4fd2943735e25594961d60493e3bd7f003f6551;p=features.git

Add a static assert to prevent compilation on platforms where int/usigned int are not 32-bits/4-bytes.

This is added to be sure that the to-be-added author hash is always 32-bit.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@36126 a592a061-630c-0410-9148-cb99ea01b6c8
---

diff --git a/src/support/os.cpp b/src/support/os.cpp
index 6984d2c748..820f4e9a66 100644
--- a/src/support/os.cpp
+++ b/src/support/os.cpp
@@ -18,6 +18,15 @@
 #include "support/os_unix.cpp"
 #endif
 
+// Static assert to break compilation on platforms where
+// int/unsigned int is not 4 bytes. Added to make sure that
+// e.g., the author hash is always 32-bit.
+template<bool Condition> struct static_assert_helper;
+template <> struct static_assert_helper<true> {};
+enum { 
+	dummy = sizeof(static_assert_helper<sizeof(int) == 4>)
+};
+
 namespace lyx {
 namespace support {
 namespace os {