NAME¶
multidelta - heuristic minimizer of interesting files
SYNOPSIS¶
multidelta [options]
test-script initial-file
[
initial-file...]
DESCRIPTION¶
Delta assists you in minimizing "interesting" files subject to a test
of their interestingness. A common such situation is when attempting to
isolate a small failure-inducing substring of a large input that causes your
program to exhibit a bug.
You supply
multidelta with
- •
- a test shell script which decides if the input files are
"interesting" ( test-script) and
- •
- an initial set of input files.
When the script is run with a source file as an argument, it should do any
single-file integrity checks on that file. Then, it should proceed to check
the entire build, on the assumption that all other files have already passed
their integrity checks.
When the script is run with no arguments, it should check integrity of all files
and then check the build.
So that the script does not need to have the list of input files hard-coded in,
the environment variable "multidelta_all_files" is always set to a
space-separated list of the filenames no matter how the script is run.
OPTIONS¶
- -level=n
- When topformflatten(1)ing, flatten to level n. The default
is 0.
- -u
- Undo the last invocation, by copying the *.bak files onto the
original copies.
- -cpp
- Before flattening run the source through the cpp(1)
preprocessor.
SEE ALSO¶
singledelta(1),
topformflat(1)
Delta Debugging project <
http://www.st.cs.uni-sb.de/dd/>