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2001-10-20 Paul Eggert <eggert@twinsun.com>

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* misc/error.c (strerror_r): Do not declare unless [!_LIBC].
	Do not check for HAVE_DECL_STRERROR_R missing unless STRERROR_R_CHAR_P.
	Use strerror_r that is only a macro, even if it is not a function.
	(strerror): Check for HAVE_DECL_STRERROR before declaring.
	(private_strerror): Use prototypes, not old-style function definition.
	(print_errno_message): New function.
	Support the POSIX 'int'-flavored strerror_r, as well as the traditional
	char*-flavored one.
	(error_tail, error, error_at_line): Use it.
This commit is contained in:
Roland McGrath
2002-12-09 02:03:15 +00:00
parent f92921c5cf
commit a5d1e89bde
1 changed files with 53 additions and 23 deletions
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76
misc/error.c
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@@ -88,7 +88,7 @@ extern void __error_at_line (int status, int errnum, const char *file_name,
# define error_at_line __error_at_line
# ifdef USE_IN_LIBIO
# include <libio/iolibio.h>
# include <libio/iolibio.h>
# define fflush(s) INTUSE(_IO_fflush) (s)
# undef putc
# define putc(c, fp) INTUSE(_IO_putc) (c, fp)
@@ -96,21 +96,30 @@ extern void __error_at_line (int status, int errnum, const char *file_name,
#else /* not _LIBC */
# if !HAVE_DECL_STRERROR_R && STRERROR_R_CHAR_P
# ifndef HAVE_DECL_STRERROR_R
"this configure-time declaration test was not run"
# endif
char *strerror_r ();
# endif
/* The calling program should define program_name and set it to the
name of the executing program. */
extern char *program_name;
# ifdef HAVE_STRERROR_R
# if HAVE_STRERROR_R || defined strerror_r
# define __strerror_r strerror_r
# else
# if HAVE_STRERROR
# ifndef strerror /* On some systems, strerror is a macro */
# ifndef HAVE_DECL_STRERROR
"this configure-time declaration test was not run"
# endif
# if !HAVE_DECL_STRERROR
char *strerror ();
# endif
# else
static char *
private_strerror (errnum)
int errnum;
private_strerror (int errnum)
{
extern char *sys_errlist[];
extern int sys_nerr;
@@ -121,9 +130,43 @@ private_strerror (errnum)
}
# define strerror private_strerror
# endif /* HAVE_STRERROR */
# endif /* HAVE_STRERROR_R */
# endif /* HAVE_STRERROR_R || defined strerror_r */
#endif /* not _LIBC */
static void
print_errno_message (int errnum)
{
char const *s;
#if defined HAVE_STRERROR_R || _LIBC
char errbuf[1024];
# if STRERROR_R_CHAR_P || _LIBC
s = __strerror_r (errnum, errbuf, sizeof errbuf);
# else
if (__strerror_r (errnum, errbuf, sizeof errbuf) == 0)
s = errbuf;
else
s = 0;
# endif
#else
s = strerror (errnum);
#endif
#if !_LIBC
if (! s)
s = _("Unknown system error");
#endif
#if _LIBC && USE_IN_LIBIO
if (_IO_fwide (stderr, 0) > 0)
{
__fwprintf (stderr, L": %s", s);
return;
}
#endif
fprintf (stderr, ": %s", s);
}
#ifdef VA_START
static void
@@ -180,25 +223,12 @@ error_tail (int status, int errnum, const char *message, va_list args)
++error_message_count;
if (errnum)
{
#if defined HAVE_STRERROR_R || _LIBC
char errbuf[1024];
char *s = __strerror_r (errnum, errbuf, sizeof errbuf);
print_errno_message (errnum);
# if _LIBC && USE_IN_LIBIO
if (_IO_fwide (stderr, 0) > 0)
__fwprintf (stderr, L": %s", s);
else
# endif
fprintf (stderr, ": %s", s);
#else
fprintf (stderr, ": %s", strerror (errnum));
#endif
}
#if _LIBC && USE_IN_LIBIO
if (_IO_fwide (stderr, 0) > 0)
putwc (L'\n', stderr);
else
#endif
# endif
putc ('\n', stderr);
fflush (stderr);
if (status)
@@ -255,7 +285,7 @@ error (status, errnum, message, va_alist)
++error_message_count;
if (errnum)
fprintf (stderr, ": %s", strerror (errnum));
print_errno_message (errnum);
putc ('\n', stderr);
fflush (stderr);
if (status)
@@ -346,7 +376,7 @@ error_at_line (status, errnum, file_name, line_number, message, va_alist)
++error_message_count;
if (errnum)
fprintf (stderr, ": %s", strerror (errnum));
print_errno_message (errnum);
putc ('\n', stderr);
fflush (stderr);
if (status)