Merge remote-tracking branch 'origin/DRTVWR-543-maint_cmake' into DRTVWR-543-maint_cmake

1 files changed, 7 insertions, 0 deletions

diff --git a/indra/llcommon/stdtypes.h b/indra/llcommon/stdtypes.h
index 887f6ab733..b07805b628 100644
--- a/indra/llcommon/stdtypes.h
+++ b/indra/llcommon/stdtypes.h
@@ -42,10 +42,17 @@ typedef unsigned int			U32;
 // Windows wchar_t is 16-bit, whichever way /Zc:wchar_t is set. In effect,
 // Windows wchar_t is always a typedef, either for unsigned short or __wchar_t.
 // (__wchar_t, available either way, is Microsoft's native 2-byte wchar_t type.)
+// The version of clang available with VS 2019 also defines wchar_t as __wchar_t
+// which is also 16 bits.
 // In any case, llwchar should be a UTF-32 type.
 typedef U32				llwchar;
 #else
 typedef wchar_t				llwchar;
+// What we'd actually want is a simple module-scope 'if constexpr' to test
+// std::is_same<wchar_t, llwchar>::value and use that to define, or not
+// define, string conversion specializations. Since we don't have that, we'll
+// have to rely on #if instead. Sorry, Dr. Stroustrup.
+#define LLWCHAR_IS_WCHAR_T 1
 #endif
 
 #if LL_WINDOWS