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Bug#593324: marked as done ([armel] g++-4.4 -O1 makes ppl test suite fail)

Your message dated Sun, 05 Jul 2015 16:18:22 +0000
with message-id <E1ZBmcY-0006gk-9d@franck.debian.org>
and subject line Bug#707276: Removed package(s) from unstable
has caused the Debian Bug report #593324,
regarding [armel] g++-4.4 -O1 makes ppl test suite fail
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
593324: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=593324
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: g++-4.4
Version: 4.4.4-8

(Leaving choice of severity to gcc maintainers; at the current stage ppl cannot
migrate to testing although it would fix an RC bug.)

ppl 0.10.2-7 FTBS on armel [1] (exclusively) with test suite failures; this was
extremely surprising as 0.10.2-6 was fine [2] and there were no code changes.
Still, the failure turned out to be reproducible on abel.d.o. Looking at one of
the failures (tests/Octagonal_Shape/upperboundifexact1.cc, disabled all but
test02, test03, test04, using cmdline [3]) yields the following interesting
result:

- Changing optimization to -O0 makes things work.
- Using -O1 or -O2 causes the failure.
- Using -O3 makes things work again.
- Using all the -f... options that "g++ -O1 -Q --help=optimizers" claims to be
  enabled at -O1 does not induce the failure. At this point I feel unable to
  debug this any further because I do not know which more fine-grained options
  to add to see which (set of) optimization triggers the problem.

I might want to add that 0.10.2-6 was built using g++-4.4 4.4.3-1 (successful),
0.10.2-7 failed with g++-4.4 4.4.4-8.

Using the command line as shown in [3] the error is pretty easy to see; correct
and stated in the test suite is

=== test02 ===
*** octs1 ***
A >= -2, A <= -1, B >= 0, B <= 2
*** octs2 ***
A >= 1, A <= 2, B >= 0, B <= 2

but we get

=== test02 ===
*** octs1 ***
A >= -2, A <= 4294967295, B >= 0, B <= 2
*** octs2 ***
A >= -4294967295, A <= 2, B >= 0, B <= 2

Please let me know if there's anything else I can do; the complete sources are
still there on abel.d.o.

Best regards,
Michael

[1] https://buildd.debian.org/fetch.cgi?&pkg=ppl&ver=0.10.2-7&arch=armel&stamp=1280947057&file=log
[2] https://buildd.debian.org/fetch.cgi?&pkg=ppl&ver=0.10.2-6&arch=armel&stamp=1267963469&file=log
[3] touch upperboundifexact1.cc ; make upperboundifexact1 \
    TEST_CPPFLAGS="-DOCTAGONAL_SHAPE_INSTANCE=int64_t -DNOISY -DVERY_NOISY" \
    CXXFLAGS="-frounding-math -g -O2" ; PPL_NOISY_TESTS=1 ./upperboundifexact1

Attachment: pgp_cYqXggRI5.pgp
Description: PGP signature


--- End Message ---
--- Begin Message --- 
Version: 1:4.4.7-8+rm

Dear submitter,

as the package gcc-4.4 has just been removed from the Debian archive
unstable we hereby close the associated bug reports.  We are sorry
that we couldn't deal with your issue properly.

For details on the removal, please see https://bugs.debian.org/707276

The version of this package that was in Debian prior to this removal
can still be found using http://snapshot.debian.org/.

This message was generated automatically; if you believe that there is
a problem with it please contact the archive administrators by mailing
ftpmaster@ftp-master.debian.org.

Debian distribution maintenance software
pp.
Luca Falavigna (the ftpmaster behind the curtain)

--- End Message ---
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