From owner-freebsd-doc  Fri Jul 20  4:50: 6 2001
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Date: Fri, 20 Jul 2001 04:50:01 -0700 (PDT)
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From: jkoshy@freebsd.org (Joseph Koshy)
Subject: Re: docs/28699: strptime(3) %d format specifier not completely documented
Reply-To: jkoshy@freebsd.org (Joseph Koshy)
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The following reply was made to PR docs/28699; it has been noted by GNATS.

From: jkoshy@FreeBSD.ORG (Joseph Koshy)
To: freebsd-gnats-submit@freebsd.org
Cc:  
Subject: Re: docs/28699: strptime(3) %d format specifier not completely documented
Date: Fri, 20 Jul 2001 04:41:34 -0700 (PDT)

 I'm not sure that this isn't a bug.  
 
 `strftime(3)' states that '%d' generates 2 digits numbers in the range
 01--31. Coming to `strptime(3)', looking at file 
 "src/lib/libc/stdtime/strptime.c":
 
 		...
                 case 'd':
                 case 'e':
                         /*
                          * The %e specifier is explicitly documented as not
                          * being zero-padded but there is no harm in allowing
                          * such padding.
                          *
                          * XXX The %e specifier may gobble one too many
                          * digits if used incorrectly.
                          */
                         if (!isdigit((unsigned char)*buf))
                                 return 0;
 		...
 
 
 We see that '%d' will accept a single digit date ONLY if a preceding format
 specifier had gobbled up whitespace before it.  A format specification 
 with a leading '%d' will fail to recognize a single digit date.  
 
 We probably need to check that the input to %d is exactly 2 digits long.
 
 Regards, 
 Koshy 
 <jkoshy@freebsd.org>
 

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