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Posted to bugs@apr.apache.org by bu...@apache.org on 2006/07/10 00:38:36 UTC
DO NOT REPLY [Bug 39996] New: - apr_(v)snprintf wrong return value
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Summary: apr_(v)snprintf wrong return value
Product: APR
Version: 1.2.7
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: APR
AssignedTo: bugs@apr.apache.org
ReportedBy: regenrecht@o2.pl
CC: rooneg@electricjellyfish.net
apr_(v)snprintf from strings/apr_snprintf.c (according to apr_strings.h)
should return "the number of characters inserted into the buffer, not
including the terminating NUL". But, as for APR 1.2.7 (Arch Linux build),
that's not true if length of input string >= buffer limit. In that case
NUL byte is counted as well.
This code:
char buff[8];
printf("%d", apr_snprintf(buff, 8, "12345678"));
will return '8' instead of '7'.
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DO NOT REPLY [Bug 39996] - apr_(v)snprintf wrong return value
Posted by bu...@apache.org.
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jorton@redhat.com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
------- Additional Comments From jorton@redhat.com 2006-07-11 14:12 -------
Thanks for the report and patch. I've committed a slightly extended test case
and removed the unnecessary paranthesis from the *snprintf changes:
http://svn.apache.org/viewvc?view=rev&revision=420858
...will backport to 1.2.x after some further testing.
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DO NOT REPLY [Bug 39996] - apr_(v)snprintf wrong return value
Posted by bu...@apache.org.
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------- Additional Comments From regenrecht@o2.pl 2006-07-09 22:41 -------
Created an attachment (id=18577)
--> (http://issues.apache.org/bugzilla/attachment.cgi?id=18577&action=view)
Just a simple patch - don't count NUL byte
Seems to work for me...
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DO NOT REPLY [Bug 39996] - apr_(v)snprintf wrong return value
Posted by bu...@apache.org.
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------- Additional Comments From regenrecht@o2.pl 2006-07-09 22:43 -------
Created an attachment (id=18578)
--> (http://issues.apache.org/bugzilla/attachment.cgi?id=18578&action=view)
Two more testcases, pro futuro
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