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[svn] Punish the *use* of ctype macros, rather than their mere presence.

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Published in <sxssnivlyut.fsf@florida.arsdigita.de>.
This commit is contained in:
hniksic 2001-04-26 22:03:08 -07:00
parent ae621c6770
commit 07abfad1c2
2 changed files with 39 additions and 4 deletions
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7
src/ChangeLog
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@ -1,3 +1,10 @@
2001-04-27 Hrvoje Niksic <hniksic@arsdigita.com>
* safe-ctype.h: Instead of throwing #error when isalpha is
defined, redefine it to something that will throw a compile-time
error if actually *used*. Do the same for the rest of the
standard C macros.
2001-04-26 Hrvoje Niksic <hniksic@arsdigita.com>
* url.c (getproxy): Ignore empty proxy vars.

36
src/safe-ctype.h
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@ -35,9 +35,38 @@ Boston, MA 02111-1307, USA. */
#ifndef SAFE_CTYPE_H
#define SAFE_CTYPE_H
#ifdef isalpha
#error "safe-ctype.h and ctype.h may not be used simultaneously"
#else
/* Catch erroneous use of ctype macros. Files that really know what
they're doing can disable this check by defining the
I_REALLY_WANT_CTYPE_MACROS preprocessor constant. */
#ifndef I_REALLY_WANT_CTYPE_MACROS
#undef isalpha
#define isalpha *** Please use ISALPHA ***
#undef isalnum
#define isalnum *** Please use ISALNUM ***
#undef isblank
#define isblank *** Please use ISBLANK ***
#undef iscntrl
#define iscntrl *** Please use ISCNTRL ***
#undef isdigit
#define isdigit *** Please use ISDIGIT ***
#undef isgraph
#define isgraph *** Please use ISGRAPH ***
#undef islower
#define islower *** Please use ISLOWER ***
#undef isprint
#define isprint *** Please use ISPRINT ***
#undef ispunct
#define ispunct *** Please use ISPUNCT ***
#undef isspace
#define isspace *** Please use ISSPACE ***
#undef isupper
#define isupper *** Please use ISUPPER ***
#undef isxdigit
#define isxdigit *** Please use ISXDIGIT ***
#endif /* I_REALLY_WANT_CTYPE_MACROS */
/* Categories. */
@ -96,5 +125,4 @@ extern const unsigned char _sch_tolower[256];
#define TOUPPER(c) _sch_toupper[(c) & 0xff]
#define TOLOWER(c) _sch_tolower[(c) & 0xff]
#endif /* no ctype.h */
#endif /* SAFE_CTYPE_H */