Closed Bug 629723 Opened 9 years ago Closed 9 years ago

Decompiling for blame erroneously prints "use strict" directives

Categories

(Core :: JavaScript Engine, defect)

Product:
Core
Component:
JavaScript Engine
Platform:
x86_64
Linux
Type:
defect
Priority:
Not set

Tracking

()

Status:
RESOLVED FIXED

People

(Reporter: jimb, Assigned: jimb)

Details

(Whiteboard: [fixed-in-tracemonkey])

Attachments

(1 file)

Don't include directive prologues when decompiling specific expressions for error messages.
5.28 KB, patch
brendan
: review+
shaver
: approval2.0+
Details | Diff | Splinter Review 
Bug 628112 comment 9 mentions that "use strict" directives are being generated inappropriately:

> TypeError: "use strict";tab is undefined
> 
> Yikes. Cc'ing jimb. This looks like a bug recently introduced (which I should
> have foreseen) where decompiling for blame wrongly inserts "use strict"; if the
> code being blamed is strict.

What are the details? How do we reproduce this?
It's trivial:

js> function f(foo){"use strict";foo.bar}
js> f()
typein:6: TypeError: "use strict";foo is undefined

/be
This also sorts the test list in js/src/tests/ecma_5/extensions; the only
addition to the list is the regression test for this bug.
Assignee: general → jimb
Attachment #509037 - Flags: review?(brendan)
Comment on attachment 509037 [details] [diff] [review]
Don't include directive prologues when decompiling specific expressions for error messages.

Cool. This should ride along into b12.

/be
Attachment #509037 - Flags: review?(brendan)
Attachment #509037 - Flags: review+
Attachment #509037 - Flags: approval2.0?
Rob, can you approve the patch? Thanks,

/be
http://hg.mozilla.org/tracemonkey/rev/5f7eb378dac6
Status: NEW → ASSIGNED
Whiteboard: [fixed-in-tracemonkey]
Status: ASSIGNED → RESOLVED
Closed: 9 years ago
Resolution: --- → FIXED
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