1 files changed, 23 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/onExceptionUnwind-14.js b/js/src/jit-test/tests/debug/onExceptionUnwind-14.js
new file mode 100644
index 000000000..121f5728e
--- /dev/null
+++ b/js/src/jit-test/tests/debug/onExceptionUnwind-14.js
@@ -0,0 +1,23 @@
+var g = newGlobal();
+var dbg = new Debugger(g);
+
+g.eval("" + function f() {
+  throw 42;
+});
+
+g.eval("" + function g() {
+  throw new Error("42");
+});
+
+// Call the functions once. This will compile them in Ion under --ion-eager.
+g.eval("try { f(); } catch (e) { }");
+g.eval("try { g(); } catch (e) { }");
+
+// Now set an onExceptionUnwind hook so that the Ion-compiled functions will
+// try to bail out. The tail of the bytecode for f and g looks like 'throw;
+// retrval', with 'retrval' being unreachable. Since 'throw' is resumeAfter,
+// bailing out for debug mode will attempt to resume at 'retrval'. Test that
+// this case is handled.
+dbg.onExceptionUnwind = function f() { };
+g.eval("try { f(); } catch (e) { }");
+g.eval("try { g(); } catch (e) { }");