particular, this is why we define a struct and not an object (which would
result in a warning about unused variable) and a named struct (otherwise we'd
get a warning about an unnamed struct not used to define an object!).
- The _n__ part is to stop VC++ 7 being confused since it encloses __LINE++ in
- parentheses. Unfortunately this does not work with other compilers, so
- we will only enable it when we know the _precise_ symbols to test for.
*/
-#define wxMAKE_ASSERT_NAME_HELPER(line) wxAssert_ ## line
-#define wxMAKE_ASSERT_NAME(line) wxMAKE_ASSERT_NAME_HELPER(line)
-#if 0
-#define wxMAKE_UNIQUE_ASSERT_NAME wxMAKE_ASSERT_NAME(_n___ ## __LINE__)
-#else
-#define wxMAKE_UNIQUE_ASSERT_NAME wxMAKE_ASSERT_NAME(__LINE__)
-#endif
-#define wxMAKE_UNIQUE_ASSERT_NAME2(text) wxMAKE_ASSERT_NAME(text)
+#define wxMAKE_UNIQUE_ASSERT_NAME wxMAKE_UNIQUE_NAME(wxAssert_)
/*
The second argument of this macro must be a valid C++ identifier and not a
#define wxCOMPILE_TIME_ASSERT(expr, msg) \
struct wxMAKE_UNIQUE_ASSERT_NAME { unsigned int msg: expr; }
+/*
+ When using VC++ 6 with "Edit and Continue" on, the compiler completely
+ mishandles __LINE__ and so wxCOMPILE_TIME_ASSERT() doesn't work, provide a
+ way to make "unique" assert names by specifying a unique prefix explicitly
+ */
+#define wxMAKE_UNIQUE_ASSERT_NAME2(text) wxCONCAT(wxAssert_, text)
+
#define wxCOMPILE_TIME_ASSERT2(expr, msg, text) \
struct wxMAKE_UNIQUE_ASSERT_NAME2(text) { unsigned int msg: expr; }