[Gnash-commit] [bug #47354] `Function.call(null)` and `Function.call(undefined)` provided an incorrect `this` instance

[Nutchanon Wetchasit]

Follow-up Comment #1, bug #47354 (project gnash):

Gnash's implementation of `Function.apply()` is also affected by the
same problem. I have made a variant of `fncall-nothis.zip` test which uses
`Function.apply()` instead of `Function.call()`; attached as
`fnapply-nothis.zip`.

This is a trace output of `fnapply-nothis-v7.swf` under Flash Player: 

PASSED: _global object should be an object type
Warning: valueOf is not a function
PASSED: _global object should be equal to undefined value
Warning: valueOf is not a function
PASSED: _global object should be equal to null value
Warning: valueOf is not a function
PASSED: Appending _global object to empty string should give "undefined"
string
PASSED: _global object should not be strictly equal to undefined value
PASSED: _global object should not be strictly equal to null value
PASSED: this pointer inside fn_nullthis should be an object type
Warning: valueOf is not a function
PASSED: this pointer inside fn_nullthis should be equal to undefined value
Warning: valueOf is not a function
PASSED: this pointer inside fn_nullthis should be equal to null value
Warning: valueOf is not a function
PASSED: Appending this pointer inside fn_nullthis to empty string should give
"undefined" string
PASSED: this pointer inside fn_nullthis should not be strictly equal to
undefined value
PASSED: this pointer inside fn_nullthis should not be strictly equal to null
value
PASSED: this pointer inside fn_nullthis should be strictly equal to _global
object
PASSED: this pointer inside fn_undefinedthis should be an object type
Warning: valueOf is not a function
PASSED: this pointer inside fn_undefinedthis should be equal to undefined
value
Warning: valueOf is not a function
PASSED: this pointer inside fn_undefinedthis should be equal to null value
Warning: valueOf is not a function
PASSED: Appending this pointer inside fn_undefinedthis to empty string should
give "undefined" string
PASSED: this pointer inside fn_undefinedthis should not be strictly equal to
undefined value
PASSED: this pointer inside fn_undefinedthis should not be strictly equal to
null value
PASSED: this pointer inside fn_undefinedthis should be strictly equal to
_global object
PASSED: _global.nullthis_value should be set to the correct value
PASSED: _global.undefinedthis_value should be set to the correct value
PASSED: There should be 22 tests run


You'd see that all tests were passed.

This is a debug output (verbosity 1) of `fnapply-nothis-v7.swf` under Gnash:

102 SECURITY: Checking security of URL
'file:///mnt/gnashdev/fncall-nothis/fnapply-nothis/fnapply-nothis-v7.swf'
102 SECURITY: Load of file
/mnt/gnashdev/fncall-nothis/fnapply-nothis/fnapply-nothis-v7.swf granted
(under local sandbox /mnt/gnashdev/fncall-nothis/fnapply-nothis/)
131 SECURITY: Extensions disabled
132 TRACE: PASSED: _global object should be an object type
132 TRACE: PASSED: _global object should be equal to undefined value
132 TRACE: PASSED: _global object should be equal to null value
132 TRACE: PASSED: Appending _global object to empty string should give
"undefined" string
132 TRACE: PASSED: _global object should not be strictly equal to undefined
value
132 TRACE: PASSED: _global object should not be strictly equal to null value
133 TRACE: PASSED: this pointer inside fn_nullthis should be an object type
133 TRACE: PASSED: this pointer inside fn_nullthis should be equal to
undefined value
133 TRACE: PASSED: this pointer inside fn_nullthis should be equal to null
value
133 TRACE: PASSED: Appending this pointer inside fn_nullthis to empty string
should give "undefined" string
133 TRACE: PASSED: this pointer inside fn_nullthis should not be strictly
equal to undefined value
133 TRACE: PASSED: this pointer inside fn_nullthis should not be strictly
equal to null value
133 TRACE: FAILED: this pointer inside fn_nullthis should be strictly equal to
_global object
133 TRACE: PASSED: this pointer inside fn_undefinedthis should be an object
type
133 TRACE: PASSED: this pointer inside fn_undefinedthis should be equal to
undefined value
133 TRACE: PASSED: this pointer inside fn_undefinedthis should be equal to
null value
133 TRACE: PASSED: Appending this pointer inside fn_undefinedthis to empty
string should give "undefined" string
133 TRACE: PASSED: this pointer inside fn_undefinedthis should not be strictly
equal to undefined value
133 TRACE: PASSED: this pointer inside fn_undefinedthis should not be strictly
equal to null value
133 TRACE: FAILED: this pointer inside fn_undefinedthis should be strictly
equal to _global object
134 ACTIONSCRIPT ERROR: Reference to undefined member [string:nullthis_value]
of object [object(gnash::Global_as):0xb8af5290]
134 TRACE: FAILED: _global.nullthis_value should be set to the correct value
("undefined" != "fn_nullthis")
134 ACTIONSCRIPT ERROR: Reference to undefined member
[string:undefinedthis_value] of object [object(gnash::Global_as):0xb8af5290]
134 TRACE: FAILED: _global.undefinedthis_value should be set to the correct
value ("undefined" != "fn_undefinedthis")
134 TRACE: PASSED: There should be 22 tests run


You'd see that tests were failed in the same way as `Function.call()`.

Gnash: 0.8.11dev (git 8b33692 7-Mar-2016)
Flash Player: 11.2 r202 (11.2.202.491) Standalone
System: Debian GNU/Linux 7.0 Wheezy i386


(file #36566)
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Additional Item Attachment:

File name: fnapply-nothis.zip             Size:11 KB


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