This was motivated by changes to llvm's `not --crash` disabling symbolization
but I ended up removing `not` from the script entirely because it
returns differently depending on whether clang "crashes" or exits for some
other reason. The script had to choose between calling `not` and `not --crash`
and sometimes it was wrong.
The script also now disables symbolization when we don't read the stack
trace because symbolizing is kind of slow.
Differential Revision: https://reviews.llvm.org/D91372
Summary:
First, call os.path.normpath on the filename argument. I passed in
./foo-asdf.cpp, and this meant that the script failed to find the
filename, and bad things happened.
Second, call os.path.abspath on binaries. CReduce runs the
interestingness test in a temp dir, so relative paths will not work.
Reviewers: akhuang
Subscribers: cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D71098
Some more additions to the script - mainly reducing the clang args after
the creduce run by removing them one by one and seeing if the crash
reproduces. Other things:
- remove the --crash flag when "fatal error" occurs
- fixed to read stack trace functions from the top
- run creduce on a copy of the original file
Patch by Amy Huang!
Differential Revision: https://reviews.llvm.org/D59725
llvm-svn: 357290
This CL causes our creduce-clang-crash.py util to:
- try to preprocess the file before reducing
- try to remove some command line arguments
- now require a llvm bin directory, since the generated crash script
doesn't have an absolute path for clang
It also marks it as executable, since I forgot to do that in the last
commit. :)
Patch by Amy Huang!
Differential Revision: https://reviews.llvm.org/D59440
llvm-svn: 356636
This CL adds a script that calls C-Reduce on an input file and given the
clang crash script, which is used to generate an interestingness test
for C-Reduce.
Patch by Amy Huang!
Differential Revision: https://reviews.llvm.org/D59118
llvm-svn: 355944
Zequan Wu