On Sun, Apr 22, 2012 at 2:18 PM, Eric Blake <eblake@xxxxxxxxxx> wrote: > On 04/21/2012 06:19 PM, Michael Kerrisk (man-pages) wrote: >> Eric, >> > >> In addition to the above, I added the following, and I'd be happy if >> you could ack it. >> >> ===== >> --- a/man3/strerror.3 >> +++ b/man3/strerror.3 >> @@ -133,6 +133,19 @@ functions return >> the appropriate error description string, >> or an "Unknown error nnn" message if the error number is unknown. >> >> +POSIX.1-2001 and POSIX.1-2008 require that a successful call to >> +.BR strerror (3) >> +shall leave >> +.I errno >> +unchanged, and note that, >> +since no function return value is reserved to indicate an error, >> +an application that wishes to check for errors should initialize >> +.I errno >> +to zero before the call, >> +and then check >> +.I errno >> +after the call. >> + >> The XSI-compliant >> .BR strerror_r () >> function returns 0 on success. >> ===== Thanks Eric! -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Author of "The Linux Programming Interface"; http://man7.org/tlpi/ -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
