[Webkit-unassigned] [Bug 158817] New: Web Inspector: syntax error in a breakpoint condition should not create an Anonymous Script in the Debugger Tab sidebar

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=158817

            Bug ID: 158817
           Summary: Web Inspector: syntax error in a breakpoint condition
                    should not create an Anonymous Script in the Debugger
                    Tab sidebar
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: bburg at apple.com
                CC: bburg at apple.com, joepeck at webkit.org,
                    mattbaker at apple.com, nvasilyev at apple.com,
                    timothy at apple.com, webkit-bug-importer at group.apple.com

Created attachment 281400
  --> https://bugs.webkit.org/attachment.cgi?id=281400&action=review
Bad anonymous scripts

This seems to be a regression from Safari 9.x.

STEPS TO REPRODUCE:
1. set a breakpoint with invalid JS
2. make the breakpoint's line execute

EXPECTED:
No anonymous script is added to the debugger tab's sidebar.

ACTUAL:
An anonymous script is created per breakpoint, but reused across failed condition evaluations. See attached screenshot.

NOTES:
In both cases, and in shipped Safari, the syntax error appears in the console with a link to the breakpoint's file/line/column.

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