ktest --help throws an exception

[grosu]

See at the end:

fslwork$ ktest --help
usage: ktest <file> [options]
<file> is either a K definition (single job mode) or an XML configuration
(batch mode).
 -h,--help                                   Print this help message.
    --version                                Print version information.
 -v,--verbose                                Verbose output.
    --color <[on|off|extended]>              Use colors in output. (Default:
                                             on)
    --programs <dir>                         Programs directory in single job
                                             mode, or a root directory for
                                             programs in batch mode. By default
                                             this is the directory where <file>
                                             reside.
    --extension <string>                     The list of program extensions
                                             separated by whitespaces. Required
                                             in single job mode, invalid in
                                             batch mode.
    --exclude <file>                         The list of programs which will
                                             not be tested. Valid only in
                                             single job mode.
    --results <dir>                          Directory containing input and
                                             expected output for programs in
                                             single job mode, or a root
                                             directory for the expected I/O for
                                             programs in batch mode. By default
                                             this is the directory where <file>
                                             reside.
    --skip <steps>                           The list of steps to be skipped,
                                             separated by whitespace. A step is
                                             either [kompile|pdf|krun].
 -d,--directory <dir>                        A root directory where K
                                             definitions reside. By default
                                             this is the current directory.
                                             Valid only in batch mode.
    --report                                 Generate a junit-like report.
    --timeout <num>                          Time limit for each process
                                             (milliseconds). Default is 300000
                                             milliseconds.
    --update-out                             Update existing .out files.
    --generate-out                           Newly generate .out files if
                                             needed.
    --threads <threads>                      Maximum number of threads spawned
                                             for parallel execution.
    --ignore-white-spaces <on|off>           Ignore white spaces when comparing
                                             results. (Default: on).
    --ignore-balanced-parentheses <on|off>   Ignore balanced parentheses when
                                             comparing results. (Default: on).
    --dry                                    Dry run: print out the command to
                                             be executed without actual
                                             execution.

Exception in thread "main" java.lang.NullPointerException
    at org.kframework.main.Main.main(Main.java:79)
fslwork$ 

[daejunpark]

Will it be fixed in the pull request #522? It seems to be same with the issue #407.

[osa1]

Yes.

[osa1]

I'm closing this as it's fixed in referenced patch.

[yilongli]

If you type incorrect option after the krun, say, krun --helpme, you still get an NPE error.

See the end of the output:

Error while parsing commandline:Unrecognized option: --helpme
usage: krun [options] <file>

 -h,--help                          Print this help message.
    --version                       Print version information.
 -v,--verbose                       Verbose output.
    --debug                         Debug messages
 -d,--directory <dir>               Path to the directory in which the kompiled
                                    K definition resides. The default is the
                                    current directory.
    --main-module <name>            Specify main module in which a program
                                    starts to execute. The default is the
                                    module specified in the given compiled K
                                    definition.
    --syntax-module <name>          Specify main module for syntax. The default
                                    is the module specified in the given
                                    compiled K definition.
    --io <[on|off]>                 Use real IO when running the definition.
                                    (Default: enabled).
    --color <[on|off|extended]>     Use colors in output. (Default: on).
    --terminal-color <color-name>   Background color of the terminal. Cells
                                    won't be colored in this color. (Default:
                                    black).
    --parser <command>              Command used to parse programs. (Default:
                                    kast).
    --config-var-parser <file>      Command used to parse configuration
                                    variables. (Default: kast -e).  See
                                    --parser above. Applies to subsequent -c
                                    options until another parser is specified
                                    with this option.
 -c,--config-var <name=value>       Specify values for variables in the
                                    configuration.
 -o,--output <mode>                 How to display Maude results. <mode> is
                                    either
                                    [pretty|smart|compatible|kore|raw|binary|no
                                    ne]. (Default: pretty).
    --search                        In conjunction with it you can specify 3
                                    options that are optional: pattern (the
                                    pattern used for search), bound (the number
                                    of desired solutions) and depth (the
                                    maximum depth of the search).
    --search-final                  Same as --search but only return final
                                    states, even if --depth is provided.
    --search-all                    Same as --search but return all matching
                                    states, even if --depth is not provided.
    --search-one-step               Same as --search but search only one
                                    transition step.
    --search-one-or-more-steps      Same as --search-all but exclude initial
                                    state, even if it matches.
    --pattern <string>              Specify a term and/or side condition that
                                    the result of execution or search must
                                    match in order to succeed. Return the
                                    resulting matches as a list of
                                    substitutions. In conjunction with it you
                                    can specify other 2 options that are
                                    optional: bound (the number of desired
                                    solutions) and depth (the maximum depth of
                                    the search).
    --bound <num>                   The number of desired solutions for search.
    --depth <num>                   The maximum number of computational steps
                                    to execute or search the definition for.
    --graph                         Displays the search graph generated by the
                                    last search.
    --backend <backend>             Specify the krun backend to execute with.
                                    <backend> is either [maude|java]. (Default:
                                    maude).
    --simulation <string>           Simulation property of two programs in two
                                    semantics.
 -X,--help-experimental             Print help on non-standard options.

Exception in thread "main" java.lang.NullPointerException
    at org.kframework.main.Main.main(Main.java:79)

[osa1]

This is an unrelated issue. Original issue was for ktest, not for krun.

[yilongli]

Yes, it was for ktest. But it looks like a generic problem, even the line of code which throws the exception is the same.

[osa1]

Closing as this no longer happens.