[PATCH v3 3/3] ucrtbase: Let stderr be always be unbuffered.

[Eric Pouech]

From: Eric Pouech

Signed-off-by: Eric Pouech 
---
 dlls/msvcrt/file.c         | 6 ++++++
 dlls/ucrtbase/tests/file.c | 1 -
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/dlls/msvcrt/file.c b/dlls/msvcrt/file.c
index a3a872d4be3..24cca6fb63e 100644
--- a/dlls/msvcrt/file.c
+++ b/dlls/msvcrt/file.c
@@ -830,9 +830,15 @@ int CDECL _isatty(int fd)
 /* INTERNAL: Allocate stdio file buffer */
 static BOOL msvcrt_alloc_buffer(FILE* file)
 {
+#if _MSVCR_VER >= 140
+    if((file->_file==STDOUT_FILENO && _isatty(file->_file))
+        || file->_file == STDERR_FILENO)
+        return FALSE;
+#else
     if((file->_file==STDOUT_FILENO || file->_file==STDERR_FILENO)
             && _isatty(file->_file))
         return FALSE;
+#endif

file->_base = calloc(1, MSVCRT_INTERNAL_BUFSIZ);
     if(file->_base) {
diff --git a/dlls/ucrtbase/tests/file.c b/dlls/ucrtbase/tests/file.c
index 23f3fd62e37..cfc24594db3 100644
--- a/dlls/ucrtbase/tests/file.c
+++ b/dlls/ucrtbase/tests/file.c
@@ -53,7 +53,6 @@ static void test_std_stream_buffering(void)
         ret = fprintf(stderr, "test");
         ok(ret == 4, "fprintf(stderr) returned %d\n", ret);
         pos = _telli64(STDERR_FILENO);
-        todo_wine
         ok(pos == 4 || broken(!GetProcAddress(GetModuleHandleA("ucrtbase"), "__CxxFrameHandler4") && !pos),
                 "expected stderr to be unbuffered (%d)\n", pos);