[Webkit-unassigned] [Bug 263792] run-jsc may kill the whole process group on some unix platforms

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=263792

--- Comment #2 from Asumu Takikawa <asumu at igalia.com> ---
Note: I thought originally this was only a problem on Linux, but you can reproduce bad behavior on MacOS as well but not as dire.

Example on Mac with zsh:

```
% run-jsc --jsc-only
Running 1 time(s): DYLD_FRAMEWORK_PATH=/Users/asumu/WebKit/WebKitBuild/JSCOnly/Release/bin /Users/asumu/WebKit/WebKitBuild/JSCOnly/Release/bin/jsc --useDollarVM=1 
Can't exec "/Users/asumu/WebKit/WebKitBuild/JSCOnly/Release/bin/jsc": No such file or directory at /Users/asumu/WebKit/Tools/Scripts/run-jsc line 70.
kill: 14012: Invalid argument

jsc exited with non-zero status: 255
```

The `kill` command errors with "invalid argument" because the jsc-only port is not available.

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