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Remove rangechecks on errno; just call strerror unconditionally. This

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eliminates a raft of portability issues, including whether sys_nerr
exists, whether the platform has any valid negative errnos, etc.  The
downside is minimal: errno shouldn't ever contain an invalid value anyway,
and if it does, reasonably modern versions of strerror will not choke.
This rangecheck idea seemed good at the time, but it's clearly a net loss,
and I apologize to all concerned for having ever put it in.
This commit is contained in:
Tom Lane
2001-01-22 23:28:52 +00:00
parent 60b282fd26
commit e9c936ff38
6 changed files with 53 additions and 130 deletions
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15
src/backend/utils/error/elog.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/error/elog.c,v 1.78 2001/01/21 00:59:26 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/error/elog.c,v 1.79 2001/01/22 23:28:52 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -43,10 +43,6 @@
extern int errno;
#ifdef HAVE_SYS_NERR
extern int sys_nerr;
#endif
extern CommandDest whereToSendOutput;
#ifdef ENABLE_SYSLOG
@ -139,14 +135,7 @@ elog(int lev, const char *fmt, ...)
return; /* ignore debug msgs if noplace to send */
/* Save error str before calling any function that might change errno */
if (errno >= 0
#ifdef HAVE_SYS_NERR
&& errno <= sys_nerr
#endif
)
errorstr = strerror(errno);
else
errorstr = NULL;
errorstr = strerror(errno);
/*
* Some strerror()s return an empty string for out-of-range errno.
* This is ANSI C spec compliant, but not exactly useful.