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// Test for the overrecursion check in the generator-resume prologue.
var keep;
function* gen() {
{
let x = 1;
const capture = () => x; // gives the block its own environment object
keep = capture;
yield x; // suspend inside the block
}
}
function step(g, n) {
if (n > 0) {
step(g, n - 1);
return;
}
g.next();
}
function rec(nsteps) {
var g = gen();
g.next(); // prime: suspend at the yield inside the block
step(g, nsteps); // resume from inside the block
rec(nsteps);
}
var caught = null;
try {
rec(2);
} catch (e) {
caught = e;
}
assertEq(caught instanceof InternalError, true);
assertEq(keep(), 1);