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Re: [creduce-bugs] oscillation in creducing
Hi Yang,
thank you.
Dmitry
пн, 3 июн. 2019 г. в 09:50, Yang Chen <chenyang@cs.utah.edu>:
>
> Hi Dmitry,
>
> Fixed. Again, thank you for preparing the test cases and reporting the bug!
>
> - Yang
>
> On 4/18/19 4:00 AM, Дмитрий Дьяченко wrote:
> > Hi Yang,
> >
> > I reproduce it and now have both variants -- 6965 / 6975 bytes. Attached.
> >
> > Thanks,
> > Dmitry
> >
> > чт, 18 апр. 2019 г. в 12:37, Дмитрий Дьяченко <dimhen@gmail.com>:
> >> Hi Yang,
> >> I compile creduce by gcc-8 from Fedora distro, not by clang-7
> >>
> >> Dmitry
> >>
> >> $ gcc -v
> >> Using built-in specs.
> >> COLLECT_GCC=/usr/bin/gcc
> >> COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/8/lto-wrapper
> >> OFFLOAD_TARGET_NAMES=nvptx-none
> >> OFFLOAD_TARGET_DEFAULT=1
> >> Target: x86_64-redhat-linux
> >> Configured with: ../configure --enable-bootstrap
> >> --enable-languages=c,c++,fortran,objc,obj-c++,ada,go,lto --prefix=/usr
> >> --mandir=/usr/share/man --infodir=/usr/share/info
> >> --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared
> >> --enable-threads=posix --enable-checking=release --enable-multilib
> >> --with-system-zlib --enable-__cxa_atexit
> >> --disable-libunwind-exceptions --enable-gnu-unique-object
> >> --enable-linker-build-id --with-gcc-major-version-only
> >> --with-linker-hash-style=gnu --enable-plugin --enable-initfini-array
> >> --with-isl --enable-libmpx --enable-offload-targets=nvptx-none
> >> --without-cuda-driver --enable-gnu-indirect-function --enable-cet
> >> --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux
> >> Thread model: posix
> >> gcc version 8.3.1 20190223 (Red Hat 8.3.1-2) (GCC)
> >>
> >> чт, 18 апр. 2019 г. в 11:36, Yang Chen <chenyang@cs.utah.edu>:
> >>> Hi Dmitry,
> >>>
> >>> It looks like the erroneous behavior was triggered by some bad
> >>> transformation in copy propagation pass. If possible, could you send us
> >>> the "best" reduced file after you hit Ctrl-C? Probably I could reproduce
> >>> the behavior locally. Thanks!
> >>>
> >>> - Yang
> >>>
> >>>
> >>> On 4/18/19 1:02 AM, Дмитрий Дьяченко wrote:
> >>>> Hi!
> >>>>
> >>>> I hit a strange situation -- creducing start "oscillate" at some point
> >>>> -- end of log follow.
> >>>>
> >>>> May be due inconsistency? -- from script I return `100' at some
> >>>> situation (gcc ICE), but run creduce w/o `--also-interesting 100'
> >>>>
> >>>> After ^C and restarting, reduction continues as usual w/o "oscillations".
> >>>>
> >>>> Do you have a suggestion how I can bugreport it?
> >>>> And 'll it be helpful to bugreport?
> >>>>
> >>>> Thanks,
> >>>> Dmitry
> >>>>
> >>>> Fedora 29 x86_64
> >>>> creduce/master compiled from sources,
> >>>> clang-7.0.1 from Fedora 29 distro
> >>>>
> >>>>
> >>>> creduce --sllooww --n 3 .. ...
> >>>> [...]
> >>>> (98.9 %, 6075 bytes)
> >>>> (98.9 %, 5985 bytes)
> >>>> ===< pass_clang :: aggregate-to-scalar >===
> >>>> ===< pass_clang :: param-to-global >===
> >>>> (98.9 %, 5942 bytes)
> >>>> (98.9 %, 5916 bytes)
> >>>> (98.9 %, 5973 bytes)
> >>>> (98.9 %, 6016 bytes)
> >>>> (98.9 %, 5998 bytes)
> >>>> shell-init: error retrieving current directory: getcwd: cannot access
> >>>> parent directories: No such file or directory
> >>>> (98.9 %, 5974 bytes)
> >>>> (98.9 %, 5962 bytes)
> >>>> (98.9 %, 5992 bytes)
> >>>> (98.9 %, 6018 bytes)
> >>>> (98.9 %, 6073 bytes)
> >>>> ===< pass_clang :: param-to-local >===
> >>>> (98.9 %, 6091 bytes)
> >>>> ===< pass_clang :: remove-nested-function >===
> >>>> (98.8 %, 6135 bytes)
> >>>> (98.8 %, 6189 bytes)
> >>>> ===< pass_clang :: union-to-struct >===
> >>>> ===< pass_clang :: return-void >===
> >>>> (98.8 %, 6181 bytes)
> >>>> (98.8 %, 6181 bytes)
> >>>> ===< pass_clang :: simple-inliner >===
> >>>> (98.8 %, 6148 bytes)
> >>>> (98.8 %, 6209 bytes)
> >>>> (98.8 %, 6318 bytes)
> >>>> (98.8 %, 6652 bytes)
> >>>> (98.7 %, 6685 bytes)
> >>>> (98.7 %, 6965 bytes)
> >>>> ===< pass_clang :: reduce-pointer-level >===
> >>>> clang_delta: ReducePointerLevel.cpp:877: void
> >>>> ReducePointerLevel::getNewLocalInitStr(const clang::Expr*,
> >>>> std::__cxx11::string&): Assertion `0 && "Uncaught initializer!"'
> >>>> failed.
> >>>> sh: line 1: 31078 Aborted (core dumped)
> >>>> "/usr/local/creduce/libexec/clang_delta"
> >>>> --transformation=reduce-pointer-level --counter=1
> >>>> /tmp/creduce-u2bwLK/a.ii > /tmp/97sto66S0m
> >>>>
> >>>> ***************************************************
> >>>>
> >>>> pass_clang::reduce-pointer-level has encountered a bug:
> >>>> crashed: "/usr/local/creduce/libexec/clang_delta"
> >>>> --transformation=reduce-pointer-level --counter=1
> >>>> /tmp/creduce-u2bwLK/a.ii
> >>>>
> >>>> Please consider tarring up /home/dimhen/errs/gcc9/x2/creduce_bug_000
> >>>> and mailing it to creduce-bugs@flux.utah.edu and we will try to fix
> >>>> the bug.
> >>>>
> >>>> This bug is not fatal, C-Reduce will continue to execute.
> >>>>
> >>>> ***************************************************
> >>>>
> >>>> ===< pass_clang :: lift-assignment-expr >===
> >>>> ===< pass_clang :: copy-propagation >===
> >>>> (98.7 %, 6975 bytes)
> >>>> (98.7 %, 6965 bytes)
> >>>> (98.7 %, 6975 bytes)
> >>>> shell-init: error retrieving current directory: getcwd: cannot access
> >>>> parent directories: No such file or directory
> >>>> (98.7 %, 6965 bytes)
> >>>> (98.7 %, 6975 bytes)
> >>>> (98.7 %, 6965 bytes)
> >>>> (98.7 %, 6975 bytes)
> >>>> [...]
> >>>>
> >>>> ... I terminate it by pressing ^C after 10-15 minutes seeing 6965 / 6975 lines