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Assume STDC_HEADERS will always be defined

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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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1
configure.ac
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@ -38,7 +38,6 @@ dnl Checks for libraries.
dnl Checks for header files. dnl Checks for header files.
AC_HEADER_DIRENT AC_HEADER_DIRENT
AC_HEADER_STDC
AC_HEADER_SYS_WAIT AC_HEADER_SYS_WAIT
AC_HEADER_STDBOOL AC_HEADER_STDBOOL

12
lib/defines.h
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@ -61,16 +61,8 @@ extern char * textdomain (const char * domainname);
#endif #endif
#endif #endif
#if STDC_HEADERS #include <stdlib.h>
# include <stdlib.h> #include <string.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 #if HAVE_ERRNO_H
# include <errno.h> # include <errno.h>

10
libmisc/getdate.y
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@ -31,11 +31,7 @@
#include <ctype.h> #include <ctype.h>
#include <time.h> #include <time.h>
#if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII)) #define IN_CTYPE_DOMAIN(c) 1
# 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 ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (c))
#define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (c)) #define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (c))
@ -54,9 +50,7 @@
#include "getdate.h" #include "getdate.h"
#if defined (STDC_HEADERS) #include <string.h>
# include <string.h>
#endif
/* Some old versions of bison generate parsers that use bcopy. /* Some old versions of bison generate parsers that use bcopy.
That loses on systems that don't provide the function, so we have That loses on systems that don't provide the function, so we have