Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/ion/bug1620189.js b/js/src/jit-test/tests/ion/bug1620189.js
new file mode 100644
index 0000000000..442982ac65
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug1620189.js
@@ -0,0 +1,11 @@
+function test(...a) {
+    // Overwrites the parameter |a|, but otherwise isn't used within this
+    // function, which should allow to optimise away the function expression.
+    // On bailout, this instruction can be safely repeated.
+    function a() {}
+
+    // Read an element from the implicit |arguments| binding to ensure the
+    // arguments object gets created.
+    assertEq(arguments[0], 0);
+}
+test(0);
\ No newline at end of file