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* [Bug libc/19038] New: argp.doc prints incorrectly when it starts with "\v"
@ 2015-10-01 0:36 kstauffer at gmail dot com
2015-10-01 0:39 ` [Bug libc/19038] " kstauffer at gmail dot com
2015-10-01 1:05 ` kstauffer at gmail dot com
0 siblings, 2 replies; 3+ messages in thread
From: kstauffer at gmail dot com @ 2015-10-01 0:36 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=19038
Bug ID: 19038
Summary: argp.doc prints incorrectly when it starts with "\v"
Product: glibc
Version: 2.24
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: kstauffer at gmail dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Created attachment 8661
--> https://sourceware.org/bugzilla/attachment.cgi?id=8661&action=edit
A argp parser whose ``doc" members starts with '\v'
The attached program has a root argp parser with a "doc" member of "\vAfter"
but this is what "b --help" prints:
Usage: b [OPTION...]
After
-?, --help Give this help list
--usage Give a short usage message
After
The first occurrence of "After" is erroneous.
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* [Bug libc/19038] argp.doc prints incorrectly when it starts with "\v"
2015-10-01 0:36 [Bug libc/19038] New: argp.doc prints incorrectly when it starts with "\v" kstauffer at gmail dot com
@ 2015-10-01 0:39 ` kstauffer at gmail dot com
2015-10-01 1:05 ` kstauffer at gmail dot com
1 sibling, 0 replies; 3+ messages in thread
From: kstauffer at gmail dot com @ 2015-10-01 0:39 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=19038
--- Comment #1 from Kenny Stauffer <kstauffer at gmail dot com> ---
It looks like the error stems from the argp_doc function. This section:
1469 if (doc)
1470 {
1471 char *vt = strchr (doc, '\v');
1472 inp_text = post ? (vt ? vt + 1 : 0) : doc;
1473 inp_text_limit = (!post && vt) ? (vt - doc) : 0;
1474 }
When processing what should come before the '\v', this section sets inp_text =
doc and inp_text_limit = 0. That value of inp_text_limit is interpreted later
to mean "print the whole string."
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* [Bug libc/19038] argp.doc prints incorrectly when it starts with "\v"
2015-10-01 0:36 [Bug libc/19038] New: argp.doc prints incorrectly when it starts with "\v" kstauffer at gmail dot com
2015-10-01 0:39 ` [Bug libc/19038] " kstauffer at gmail dot com
@ 2015-10-01 1:05 ` kstauffer at gmail dot com
1 sibling, 0 replies; 3+ messages in thread
From: kstauffer at gmail dot com @ 2015-10-01 1:05 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=19038
Kenny Stauffer <kstauffer at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kstauffer at gmail dot com
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end of thread, other threads:[~2015-10-01 1:05 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2015-10-01 0:36 [Bug libc/19038] New: argp.doc prints incorrectly when it starts with "\v" kstauffer at gmail dot com
2015-10-01 0:39 ` [Bug libc/19038] " kstauffer at gmail dot com
2015-10-01 1:05 ` kstauffer at gmail dot com
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