I think it's clang_delta bug. I will investigate it. Thanks for the
feedback!
- Yang
On 6/8/13 2:58 PM, Дмитрий Дьяченко wrote:
John,
with creduce-latest + clang-3.2 I got the same crash in test #6.
Now I find crash-file in temporary directory in creduce/tests/
Crash-file attached.
Sorry, I not mention early why I try clang-latest + creduce-latest: at
first, to my fun :), and second, in hope to provide useful feedback to
your research group.
I do gcc-bug-hunting relatively rare and for each new one I try new
clang + new creduce :)
May be you find interesting [preliminary] comparison of
creduce-current with clang-3.2/3.4-trunk
1. comparison creduce/tests/run_tests
a) the same tests FAIL and PASS
b) test #6 crash with both clang's versions
c) elapsed time in seconds as run_tests reports
3.2 3.4-current
0: 922 207
1: 23 28
2: 928 212
3: 17 24
6: 2209 1048
2. comparison for real-world tasks:
results are identical with both versions of clang -- reductions hang
Thanks,
Dmitry
2013/6/8 John Regehr<[email protected]>:
Hi Dmitry,
I'm in the middle of some more C-Reduce changes right now. It might be best
to not use the current version until things stabilize a bit.
-- tests 0..3 PASS
-- tests 4, 5, 7 FAIL with
I'll look into this, thanks for letting us know.
0.<eof> parser at end of file
sh: line 1: 23784 Segmentation fault (core dumped)
/home/dimhen/build/creduce/creduce/../clang_delta/clang_delta
--transformation=return-void --counter=1
/home/dimhen/tmp/creduce-WStouG/small.c> /tmp/file0I5kCp
Right now we only develop and test using Clang 3.2, so we can't help you
with crashes against the LLVM top of tree. It's super easy to download the
3.2 binary distribution and compile C-Reduce against it, so I'd ask you to
just do that.
I have not seen any hangs like you are seeing, but it could easily be that I
have introduced new bugs lately. I'm still making some changes to the core
of C-Reduce but will hopefully be done soon, and then I'll try to reproduce
the problems you are seeing.
John
