Improve quality of tests for time stamp overflow. For example,

without this patch (encode-time 0 0 0 1 1 1152921504606846976)
returns the obviously-bogus value (-948597 62170) on my RHEL 5.5
x86-64 host.  With it, it reports time overflow.
* deps.mk (editfns.o): Depend on ../lib/intprops.h.
* editfns.c: Include limits.h and intprops.h.
(TIME_T_MIN, TIME_T_MAX): New macros.
(time_overflow): Move earlier, to before first use.
(hi_time, lo_time): New functions, for an accurate test for
out-of-range times.
(Fcurrent_time, Fget_internal_run_time, make_time): Use them.
(Fget_internal_run_time): Don't assume time_t fits in int.
(make_time): Use list2 instead of Fcons twice.
(Fdecode_time): More accurate test for out-of-range times.
(check_tm_member): New function.
(Fencode_time): Use it, to test for out-of-range times.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/deps.mk b/src/deps.mk
index 2b162b07bb8..fba856c1be3 100644
--- a/src/deps.mk
+++ b/src/deps.mk
@@ -87,7 +87,8 @@ dosfns.o: buffer.h termchar.h termhooks.h frame.h blockinput.h window.h \
    msdos.h dosfns.h dispextern.h charset.h coding.h atimer.h systime.h \
    lisp.h $(config_h)
 editfns.o: editfns.c window.h buffer.h systime.h $(INTERVALS_H) character.h \
-   coding.h frame.h blockinput.h atimer.h ../lib/unistd.h ../lib/strftime.h \
+   coding.h frame.h blockinput.h atimer.h \
+   ../lib/intprops.h ../lib/strftime.h ../lib/unistd.h \
    lisp.h globals.h $(config_h)
 emacs.o: emacs.c commands.h systty.h syssignal.h blockinput.h process.h \
    termhooks.h buffer.h atimer.h systime.h $(INTERVALS_H) lisp.h $(config_h) \