Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!MIT.EDU!Raeburn
From: Raeburn@MIT.EDU (Ken Raeburn)
Newsgroups: gnu.g++.lib.bug
Subject: problems with `tests' &c
Message-ID: <8910200052.AA26573@PROMETHEUS.MIT.EDU>
Date: 20 Oct 89 00:52:15 GMT
Sender: daemon@tut.cis.ohio-state.edu
Distribution: gnu
Organization: GNUs Not Usenet
Lines: 42


(Environment: GCC 1.36 with patches, G++ 10/17 [since when has the
version number meant much?], LIBG++ 10/02; configured for VAX running
4.3BSD.)

If you have to rebuild `tests' after building libg++.a, make will
think that tests is up to date (assuming some activity happened in
tests/ before).  (I assume .PHONY was intended to take care of this;
it doesn't with the BSD-based make I'm using.)

The BSD curses code wants to go off and find a terminal file
descriptor; this could be pointed out in documentation.  (I often
build with "make foo >& logfile < /dev/null", so no tty file
descriptor is available; Berkeley's code causes initsrc() to loop
until it find one, or until it reaches some particular (but
uninitialized!) value.)

The checktests.diffs file seems to give misleading results for some
tests, most notably those that use floating point values.  (This may
be due to differences between VAX floating point and IEEE or whatever
expected.out was done with.)

The Rational tests often come out with numbers that are as much as 32
times larger than those in expected.out.  The Random tests have quite
different results, but floating point values were used in a couple of
places, so I'm assuming that's the cause here also.

The output line from tFix for `abs(.2)' I don't understand -- mine
looks reasonable (I guess):
	abs(.2) =  0.19998 [17]
but the one in expected.out says
	abs(.2) =  0.19998 [8240]
Where did 8240 come from???

Aside from that, all tests appear to have worked.  (I haven't checked
test0 or tCurses out yet.)

The gperf makefile assumes that make defines $(MAKE), which is
different from the way the rest of the tree is set up, and causes
"make clean" to complain.

-- Ken