__getmainargs last argument is a pointer to new_mode.

dlls/crtdll/crtdll_main.c

@@ -12,7 +12,7 @@ DEFAULT_DEBUG_CHANNEL(crtdll);
 
 /* from msvcrt */
 extern void __cdecl __getmainargs( int *argc, char ***argv, char **environ,
-                                   int expand_wildcards, void *_startupinfo );
+                                   int expand_wildcards, int *new_mode );
 
 /* The following data items are not exported from msvcrt */
 unsigned int CRTDLL__basemajor_dll;
@@ -52,5 +52,6 @@ BOOL WINAPI CRTDLL_Init(HINSTANCE hinstDLL,DWORD fdwReason,LPVOID lpvReserved)
  */
 void __cdecl __GetMainArgs( int *argc, char ***argv, char **environ, int expand_wildcards )
 {
-    __getmainargs( argc, argv, environ, expand_wildcards, NULL );
+    int new_mode = 0;
+    __getmainargs( argc, argv, environ, expand_wildcards, &new_mode );
 }

dlls/msvcrt/data.c

@@ -233,24 +233,26 @@ void MSVCRT_free_args(void)
  *		__getmainargs (MSVCRT.@)
  */
 void __cdecl MSVCRT___getmainargs(int *argc, char ***argv, char **environ,
-				  int expand_wildcards, void *_startupinfo)
+                                  int expand_wildcards, int *new_mode)
 {
-  TRACE("(%p,%p,%p,%d,%p).\n", argc, argv, environ, expand_wildcards, _startupinfo);
+  TRACE("(%p,%p,%p,%d,%p).\n", argc, argv, environ, expand_wildcards, new_mode);
   *argc = MSVCRT___argc;
   *argv = MSVCRT___argv;
   *environ = MSVCRT__environ;
+  MSVCRT__set_new_mode( *new_mode );
 }
 
 /*********************************************************************
  *		__wgetmainargs (MSVCRT.@)
  */
 void __cdecl MSVCRT___wgetmainargs(int *argc, WCHAR ***wargv, WCHAR **wenviron,
-				   int expand_wildcards, void *_startupinfo)
+                                   int expand_wildcards, int *new_mode)
 {
-  TRACE("(%p,%p,%p,%d,%p).\n", argc, wargv, wenviron, expand_wildcards, _startupinfo);
+  TRACE("(%p,%p,%p,%d,%p).\n", argc, wargv, wenviron, expand_wildcards, new_mode);
   *argc = MSVCRT___argc;
   *wargv = MSVCRT___wargv;
   *wenviron = MSVCRT__wenviron;
+  MSVCRT__set_new_mode( *new_mode );
 }
 
 /*********************************************************************

dlls/msvcrt/msvcrt.h

@@ -34,6 +34,7 @@ typedef struct __MSVCRT_thread_data
   ((MSVCRT_thread_data*)TlsGetValue(MSVCRT_tls_index))->x = y
 
 void  MSVCRT__set_errno(int);
+int   __cdecl MSVCRT__set_new_mode(int mode);
 int   __cdecl MSVCRT__fcloseall(void);
 void *__cdecl MSVCRT_malloc(unsigned int);
 void *__cdecl MSVCRT_calloc(unsigned int, unsigned int);