Add a static assert to prevent compilation on platforms where int/usigned int are...

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 6984d2c7480fbfd43fe0079716d7eab4252a370d..820f4e9a66be3b8c32b4362843657b530230c629 100644 (file)
--- 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 {