Fix T71273: Bad encoding of utf-8 for Text objects

`BLI_strncpy_wchar_from_utf8` internally assumes `wchar_t` is 32 bits
which is not the case on windows.

The solution is to replace `wchar_t` with `char32_t`.

Thanks to @robbott for compatibility on macOS.

Differential Revision: https://developer.blender.org/D6198

1 files changed, 9 insertions, 0 deletions

diff --git a/source/blender/blenlib/BLI_sys_types.h b/source/blender/blenlib/BLI_sys_types.h
index a82e6a562e0..354d27385a2 100644
--- a/source/blender/blenlib/BLI_sys_types.h
+++ b/source/blender/blenlib/BLI_sys_types.h
@@ -72,6 +72,15 @@ typedef uint64_t u_int64_t;
 #include <stddef.h> /* size_t define */
 #include <stdbool.h>
 
+#ifndef __cplusplus
+#  if defined(__APPLE__)
+/* The <uchar.h> standard header is missing on macOS. */
+typedef unsigned int char32_t;
+#  else
+#    include <uchar.h>
+#  endif
+#endif
+
 typedef unsigned int uint;
 typedef unsigned short ushort;
 typedef unsigned long ulong;