Akihiro Sagawa : shlwapi: Fix wnsprintfA/wvnsprintfA %C conversion.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 5ddca3dc0f920c29d8ef3a03dafb9918526daebf
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=5ddca3dc0f920c29d8ef3a03dafb9918526daebf

Author: Akihiro Sagawa <sagawa.aki at gmail.com>
Date:   Wed Feb 19 23:21:37 2020 +0900

shlwapi: Fix wnsprintfA/wvnsprintfA %C conversion.

Signed-off-by: Akihiro Sagawa <sagawa.aki at gmail.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/shlwapi/wsprintf.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/dlls/shlwapi/wsprintf.c b/dlls/shlwapi/wsprintf.c
index f2e5f0ace1..baf5ea601a 100644
--- a/dlls/shlwapi/wsprintf.c
+++ b/dlls/shlwapi/wsprintf.c
@@ -254,8 +254,11 @@ static UINT WPRINTF_GetLen( WPRINTF_FORMAT *format, WPRINTF_DATA *arg,
     switch(format->type)
     {
     case WPR_CHAR:
-    case WPR_WCHAR:
         return (format->precision = 1);
+    case WPR_WCHAR:
+        if (dst_is_wide) len = 1;
+        else len = WideCharToMultiByte( CP_ACP, 0, &arg->wchar_view, 1, NULL, 0, NULL, NULL );
+        return (format->precision = len);
     case WPR_STRING:
         if (!arg->lpcstr_view) arg->lpcstr_view = null_stringA;
         if (dst_is_wide)
@@ -397,7 +400,14 @@ INT WINAPI wvnsprintfA( LPSTR buffer, INT maxlen, LPCSTR spec, __ms_va_list args
         switch(format.type)
         {
         case WPR_WCHAR:
-            *p++ = argData.wchar_view;
+            {
+                CHAR mb[5];
+                if (WideCharToMultiByte( CP_ACP, 0, &argData.wchar_view, 1, mb, sizeof(mb), NULL, NULL ))
+                {
+                    memcpy( p, mb, len );
+                    p += len;
+                }
+            }
             break;
         case WPR_CHAR:
             *p++ = argData.char_view;