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-rw-r--r--js/src/jit-test/tests/basic/bug1280252.js9
1 files changed, 9 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/bug1280252.js b/js/src/jit-test/tests/basic/bug1280252.js
new file mode 100644
index 0000000000..486d2d2a51
--- /dev/null
+++ b/js/src/jit-test/tests/basic/bug1280252.js
@@ -0,0 +1,9 @@
+function f() {
+ x = arguments;
+ delete x[1];
+}
+f(0, 1);
+gc();
+assertEq(x.length, 2);
+assertEq(0 in x, true);
+assertEq(1 in x, false);