windows-nt/Source/XPSP1/NT/base/crts/crtw32/misc/charmax.c
2020-09-26 16:20:57 +08:00

54 lines
1.8 KiB
C

/***
*charmax.c - definition of _charmax variable
*
* Copyright (c) 1993-2001, Microsoft Corporation. All rights reserved.
*
*Purpose:
* defines _charmax
*
* According to ANSI, certain elements of the lconv structure must be
* initialized to CHAR_MAX and the value of CHAR_MAX changes when
* the user compiles -J. To reflect this change in the lconv structure,
* we initialize the structure to SCHAR_MAX, and when any of the users
* modules are compiled -J, the structure is updated.
*
* Note that this is not done for DLLs linked to the CRT DLL, because
* we do not want such DLLs to override the -J setting for an EXE
* linked to the CRT DLL. See comments in crtexe.c.
*
* Files involved:
*
* locale.h - if -J, generates an unresolved external to _charmax
* charmax.c - defines _charmax and sets to UCHAR_MAX (255), places
* _lconv_init in startup initializer table if pulled in by -J
* lconv.c - initializes lconv structure to SCHAR_MAX (127),
* since libraries built without -J
* lcnvinit.c - sets lconv members to 25.
**
*Revision History:
* 04-06-93 CFW Module created.
* 04-14-93 CFW Change _charmax from short to int, cleanup.
* 09-15-93 SKS Use ANSI conformant "__" names.
* 11-01-93 GJF Cleaned up a bit.
* 04-28-99 PML Wrap __declspec(allocate()) in _CRTALLOC macro.
* 03-27-01 PML .CRT$XI routines must now return 0 or _RT_* fatal
* error code (vs7#231220)
*
*******************************************************************************/
#ifdef _MSC_VER
#include <sect_attribs.h>
#include <internal.h>
int __lconv_init(void);
int _charmax = 255;
#pragma data_seg(".CRT$XIC")
_CRTALLOC(".CRT$XIC") static _PIFV pinit = __lconv_init;
#pragma data_seg()
#endif /* _MSC_VER */