.prototype segfaults

[ghost]

I like to inspect prototype attributes to get a feel for what methods objects support, but this causes segfaults on most objects, like this one:

$ node
> require('canvas').prototype

rlwrap: warning: node killed by signal 11 - rlwrap will now kill itself with the same signal
Segmentation fault

This is on node v0.2.5 and it seems that most everything else works.

[kkaefer]

Same on 0.4.7. Also applies to require('canvas').Image

[LinusU]

This is still a problem with version 1.2.3 on node 0.12.4.

[LinusU]

This is still a problem with version 1.3.10 on node 5.5.0.

[basvanmeurs]

This is still a problem in Node 6.8 and 7.2.

[zbjornson]

@basvanmeurs #808 (not merged) hopefully fixes this but the VS Code debugger seems to be doing something unique that exacerbates the problem. What's your environment like - any debuggers?