Unable to set variable from other contract, able to from outside

Question

I've got two contracts, A and B, I set them up in a truffle test separately.

A.new()...
B.new()...

A has a function bar, which sets a public boolean boo to true that is never read anywhere. B has a function, foo, that calls bar on a previously instantiated A.

contract A(){
    bool public boo = false;
    function bar() public {
        boo = true;
    }
}
contract B(){
    A public myA;
    function setA(address addr){
       myA = A(addr);
    }
    function foo() public {
       myA.bar();
    }
}

Now in my truffle test, I call bar two ways, directly, and thru b.foo().

a.bar();
b.setA(a.address);
b.foo();

The first call to bar works fine. The second call thru foo throws out of gas no matter how much gas I give it. What am I doing wrong?

Answer 1

Turns out the out of gas exception really was an out of gas exception this time...