Comment #1 on issue 435 by [email protected]: The .length property of a
function always returns zero
http://code.google.com/p/v8/issues/detail?id=435
The issue still exists. Firefox 3.6.13 pops up 1 as well.
In Chromium, by inspecting 'window.confirm' it seems to be a native
function. I tried to implement a simple example where the length of a
native function is non-zero, but it didn't work.
Using v8 from trunk, neither setting the 'length' property or setting the
argc in the v8::Signature passed to the FunctionTemplate seem to work. The
example is attached.
I'm not so familiar with v8 internals, but for functions, the Get() ends up
using the AccessorDescriptor 'FunctionLength' (acessors.cc) and calls
Accessors::FunctionGetLength, which look in SharedFunctionInfo for the
length.
My guess here is that maybe SharedFunctionInfo length is not being set for
native functions? (it could use the v8::Signature argc parameter to fill
that)
Attachments:
main.cc 913 bytes
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