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-rw-r--r--js/src/jit-test/tests/debug/bug-1477084.js30
1 files changed, 30 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/bug-1477084.js b/js/src/jit-test/tests/debug/bug-1477084.js
new file mode 100644
index 0000000000..2e45a8cc05
--- /dev/null
+++ b/js/src/jit-test/tests/debug/bug-1477084.js
@@ -0,0 +1,30 @@
+// Don't assert trying to force return before the initial yield of an async function.
+
+var g = newGlobal({newCompartment: true});
+g.parent = this;
+g.parentExc = new Error("pants");
+g.eval(`
+ var dbg = new Debugger;
+ var pw = dbg.addDebuggee(parent);
+ var hits = 0;
+ dbg.onExceptionUnwind = function (frame) {
+ dbg.onExceptionUnwind = undefined;
+ return {return: undefined};
+ };
+ dbg.uncaughtExceptionHook = exc => {
+ hits++;
+ assertEq(exc instanceof TypeError, true);
+ assertEq(/force return.*before the initial yield/.test(exc.message), true);
+ return {throw: pw.makeDebuggeeValue(parentExc)};
+ };
+`);
+
+async function* method({ x: callbackfn = unresolvableReference }) {}
+try {
+ method();
+} catch (exc) {
+ g.dbg.enabled = false;
+ assertEq(exc, g.parentExc);
+}
+
+assertEq(g.hits, 1);