windows-server-2003/base/crts/crtw32/misc/wrt2err.c

/***
*wrt2err.c - write an LSTRING to stderr (Win32 version)
*
*	Copyright (c) 1989-2001, Microsoft Corporation. All rights reserved.
*
*Purpose:
*	This module contains a routine __wrt2err that writes an LSTRING
*	(one byte length followed by the several bytes of the string)
*	to the standard error handle (2).  This is a helper routine used
*	for MATH error messages (and also FORTRAN error messages).
*
*Revision History:
*	06-30-89  PHG	module created, based on asm version
*	03-16-90  GJF	Made calling type _CALLTYPE1, added #include
*			<cruntime.h> and fixed the copyright. Also, cleaned
*			up the formatting a bit.
*	07-24-90  SBM	Removed '32' from API names
*	10-04-90  GJF	New-style function declarator.
*	12-04-90  SRW	Changed to include <oscalls.h> instead of <doscalls.h>
*	04-26-91  SRW	Removed level 3 warnings
*	07-18-91  GJF	Replaced call to DbgPrint with WriteFile to standard
*			error handle [_WIN32_].
*	04-06-93  SKS	Add __cdecl keyword
*	09-06-94  CFW	Remove Cruiser support.
*	12-03-94  SKS	Clean up OS/2 references
*	06-13-95  GJF	Replaced _osfhnd[] with _osfhnd() (macro referencing
*			field in ioinfo struct).
*
*******************************************************************************/

#ifndef _POSIX_

#include <cruntime.h>
#include <oscalls.h>
#include <internal.h>

/***
*__wrt2err(msg) - write an LSTRING to stderr
*
*Purpose:
*	Takes a pointer to an LSTRING which is to be written to standard error.
*	An LSTRING is a one-byte length followed by that many bytes for the
*	character string (as opposed to a null-terminated string).
*
*Entry:
*	char *msg = pointer to LSTRING to write to standard error.
*
*Exit:
*	Nothing returned.
*
*Exceptions:
*	None handled.
*
*******************************************************************************/

void __cdecl __wrt2err (
	char *msg
	)
{
	unsigned long length;		/* length of string to write */
	unsigned long numwritten;	/* number of bytes written */

	length = *msg++;		/* 1st byte is length */

	/* write the message to stderr */

	WriteFile((HANDLE)_osfhnd(2), msg, length, &numwritten, NULL);
}

#endif  /* _POSIX_ */