Assume STDC_HEADERS will always be defined

We're in 2021.  C89 is everywhere; in fact, there are many other
assumptions in the code that wouldn't probably hold on
pre-standard C environments.  Let's simplify and assume that C89
is available.

The specific assumptions are that:
- <string.h>, and <stdlib.h> are available
- strchr(3), strrchr(3), and strtok(3) are available
- isalpha(3), isspace(3), isdigit(3), and isupper(3) are available

I think we can safely assume we have all of those.

Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
This commit is contained in:
Alejandro Colomar 2021-12-28 19:19:32 +01:00
parent e668c7e725
commit 4e1afcd662
3 changed files with 4 additions and 19 deletions

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@ -38,7 +38,6 @@ dnl Checks for libraries.
dnl Checks for header files.
AC_HEADER_DIRENT
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_HEADER_STDBOOL

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@ -61,16 +61,8 @@ extern char * textdomain (const char * domainname);
#endif
#endif
#if STDC_HEADERS
#include <stdlib.h>
#include <string.h>
#else /* not STDC_HEADERS */
# ifndef HAVE_STRCHR
# define strchr index
# define strrchr rindex
# endif
char *strchr (), *strrchr (), *strtok ();
#endif /* not STDC_HEADERS */
#if HAVE_ERRNO_H
# include <errno.h>

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@ -31,11 +31,7 @@
#include <ctype.h>
#include <time.h>
#if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
#define IN_CTYPE_DOMAIN(c) 1
#else
# define IN_CTYPE_DOMAIN(c) isascii(c)
#endif
#define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (c))
#define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (c))
@ -54,9 +50,7 @@
#include "getdate.h"
#if defined (STDC_HEADERS)
#include <string.h>
#endif
/* Some old versions of bison generate parsers that use bcopy.
That loses on systems that don't provide the function, so we have