segmentation fault with: NSDictionary.dictionaryWithObjectsAndKeys

[jazzbox@…]

macruby -e 'p NSDictionary.dictionaryWithObjectsAndKeys("a","b",nil)'
Segmentation fault

[lsansonetti@…]

-[NSDictionary dictionaryWithObjectsAndKeys:] is a tricky variadic method (it accepts a variable number of arguments). There is no way MacRuby can know if a given method is variadic by asking the runtime.

However, MacRuby can handle these methods if you load the appropriate framework metadata first.

$ macruby -e 'framework "Foundation"; p NSDictionary.dictionaryWithObjectsAndKeys("a","b",nil)'
{"b"=>"a"}