msvcrt: Print assertion failure messages to stderr.

This matches Windows behaviour. In particular, redirecting stderr with freopen() followed by assert(0) will print the failure message to the relevant file. Signed-off-by: Zebediah Figura <zfigura@codeweavers.com> Signed-off-by: Piotr Caban <piotr@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

msvcrt: Print assertion failure messages to stderr.
35336052 · Zebediah Figura · Alexandre Julliard · ec9e556d · 35336052 · 35336052
Commit 35336052 authored Jun 29, 2020 by Zebediah Figura Committed by Alexandre Julliard Jun 30, 2020
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Showing with 4 additions and 3 deletions

exit.c dlls/msvcrt/exit.c +1 -1

msvcrt.h dlls/msvcrt/msvcrt.h +3 -0

scanf.c dlls/msvcrt/scanf.c +0 -2

No files found.
--- a/dlls/msvcrt/exit.c
+++ b/dlls/msvcrt/exit.c
@@ -305,7 +305,7 @@ void CDECL MSVCRT__wassert(const MSVCRT_wchar_t* str, const MSVCRT_wchar_t* file
    DoMessageBoxW(assertion_failed, text);
  }
  else
-    _cwprintf(format_console, str, file, line);
+    MSVCRT_fwprintf(MSVCRT_stderr, format_console, str, file, line);

  MSVCRT_raise(MSVCRT_SIGABRT);
  MSVCRT__exit(3);

--- a/dlls/msvcrt/msvcrt.h
+++ b/dlls/msvcrt/msvcrt.h
@@ -447,6 +447,8 @@ struct MSVCRT__iobuf {

 typedef struct MSVCRT__iobuf MSVCRT_FILE;

+extern MSVCRT_FILE MSVCRT__iob[];
+
 struct MSVCRT_lconv {
    char* decimal_point;
    char* thousands_sep;
@@ -1107,6 +1109,7 @@ MSVCRT___time32_t __cdecl MSVCRT__time32(MSVCRT___time32_t*);
 MSVCRT___time64_t __cdecl MSVCRT__time64(MSVCRT___time64_t*);
 MSVCRT_FILE*   __cdecl MSVCRT__fdopen(int, const char *);
 MSVCRT_FILE*   __cdecl MSVCRT__wfdopen(int, const MSVCRT_wchar_t *);
+int            WINAPIV MSVCRT_fwprintf(MSVCRT_FILE *file, const MSVCRT_wchar_t *format, ...);
 int            __cdecl MSVCRT_vsnprintf(char *str, MSVCRT_size_t len, const char *format, __ms_va_list valist);
 int            __cdecl MSVCRT_vsnwprintf(MSVCRT_wchar_t *str, MSVCRT_size_t len,
                                       const MSVCRT_wchar_t *format, __ms_va_list valist );

--- a/dlls/msvcrt/scanf.c
+++ b/dlls/msvcrt/scanf.c
@@ -35,8 +35,6 @@

 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);

-extern MSVCRT_FILE MSVCRT__iob[];
-
 /* helper function for *scanf.  Returns the value of character c in the
 * given base, or -1 if the given character is not a digit of the base.
 */