[creduce-bugs] oscillation in creducing

[Дмитрий Дьяченко <dimhen@gmail.com>]

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