Bug 127600

Summary: DebuggerCallFrame::evaluateWithCallFrame() should not execute a null executable
Product: WebKit Reporter: Mark Lam <mark.lam>
Component: JavaScriptCoreAssignee: Mark Lam <mark.lam>
Status: RESOLVED FIXED    
Severity: Normal CC: bburg, fpizlo, ggaren, mhahnenberg, msaboff, oliver, timothy
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   
Attachments:
Description Flags
the patch. oliver: review+

Description Mark Lam 2014-01-24 18:58:10 PST 
In DebuggerCallFrame::evaluateWithCallFrame(), if the script string that is passed in is bad, it will fail to create an Executable i.e. EvalExecutable::create() returns null.  However, DebuggerCallFrame::evaluateWithCallFrame() currently just clears the exception and proceeds to attempt to execute the Executable (which again is null).  A crash ensues.

DebuggerCallFrame::evaluateWithCallFrame() should abort if the Executable pointer is null.

Patch coming.
Comment 1 Mark Lam 2014-01-24 19:08:09 PST 
Created attachment 222183 [details]
the patch.
Comment 2 Mark Lam 2014-01-24 19:11:36 PST 
Thanks.  Landed in r162752: <http://trac.webkit.org/r162752>.
Comment 3 Geoffrey Garen 2014-01-27 11:40:30 PST 
Regression test?
Comment 4 Mark Lam 2014-02-03 13:21:10 PST 
(In reply to comment #3)
> Regression test?

Will work on regression test at https://bugs.webkit.org/show_bug.cgi?id=128121.