bugThe GNU Hurd - Bugs: bug #15936, improper use of fmt_seconds, etc.,...


bug #15936: improper use of fmt_seconds, etc., in libps/spec.c

Submitter:  Ben Asselstine <benasselstine>
Submitted:  Wed 01 Mar 2006 02:25:40 AM UTC
Category:  Hurd Interfaces Severity:  3 - Normal
Priority:  5 - Normal Item Group:  None
Status:  None Privacy:  Public
Assigned to:  None Originator Name:  Ben Asselstine
Open/Closed:  Open Reproducibility:  None
Size (loc):  None Planned Release:  None
Effort:  0.00
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Wed 01 Mar 2006 02:25:40 AM UTC, original submission:  

In libshouldbeinlibc/timespec.c, fmt_minutes, fmt_seconds, and fmt_past_time do not modify their BUF output parameter if TV->tv_sec is 0, and precision is also 0.  The return value of fmt_* is set appropriately to 0 in this case.  The callers of these functions are in libps/spec.c: ps_emit_seconds, ps_emit_minutes, and ps_emit_past_time do not check the return value properly before passing on the buf parameter in ps_stream_write_field.

callers of ps_emit_seconds, ps_emit_minutes, and ps_emit_past_time don't seem to be ever use a precision of 0, but these functions should check the return values of fmt_seconds, fmt_minutes, fmt_past_time, to be complete.  By fixing this, libps would become a little bit more robust.

This bug report comes as a result of code-staring audit and not debugging a particular bug in gdb.

Ben Asselstine <benasselstine>


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