Check return values or cast them to (void), as required by the coding
standards; add exceptions to the coding standards for cases where this is
not desirable
1068. [bug] errno could be overwritten by catgets(). [RT #1921]
1066. [bug] Provide a thread safe wrapper for strerror().
[RT #1689]
(Also some changes to configure.in, config.h.in, and acconfig.h that were
necessary to allow config.h.in to be correctly regenerated with the
HAVE_STRERROR definition needed by 1066.)
972. [bug] The file modification time code in zone.c was using the
wrong epoch. [RT #1667]
(This pullup includes not only the changes to zone.c, but all the
recent epoch-related fixes)
that the number of seconds in an isc_time_t does not
exceed the range of a time_t, or return ISC_R_RANGE.
Similarly, isc_time_now(), isc_time_nowplusinterval(),
isc_time_add() and isc_time_subtract() now check the
range for overflow/underflow. In the case of
isc_time_subtract, this changed a calling requirement
(ie, something that could generate an assertion)
into merely a condition that returns an error result.
isc_time_add() and isc_time_subtract() were void-
valued before but now return isc_result_t.
The seconds member isc_time_t on Unix platforms was changed from time_t
to unsigned int.
unix/time.c now uses macros for nanoseconds per second, nanoseconds per
microsecond and microseconds per second to make sure that the right
number of zeros appears each place the constant is used.
unix/time.c functions which take initialized isc_(interval|time)_t arguments
INSIST() that the nanoseconds value is less than one full second.
unix/time.c's isc_time_microdiff was broken because it did multiplication and
addition with unsigned integers and attempted to set them a 64 bit int to
avoid overflow, but C's ints don't promote to 64 bits on machines that only
have 32 bit longs. Fixed.
Added all the pertinent documentation to time.h.
Cleanup of redundant/useless header file inclusion.
ISC style lint, primarily for function declarations and standalone
comments -- ie, those that appear on a line without any code, which
should be written as follows:
/*
* This is a comment.
*/
