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-rw-r--r--js/src/jit-test/tests/basic/testBug502914.js19
1 files changed, 19 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/testBug502914.js b/js/src/jit-test/tests/basic/testBug502914.js
new file mode 100644
index 0000000000..d01ee9786e
--- /dev/null
+++ b/js/src/jit-test/tests/basic/testBug502914.js
@@ -0,0 +1,19 @@
+function testBug502914() {
+ // Assigning a non-function to a function-valued property on trace should
+ // bump the shape.
+ function f1() {}
+ function C() {}
+ var x = C.prototype = {m: f1};
+ x.m(); // brand scope
+ var arr = [new C, new C, new C, x];
+ try {
+ for (var i = 0; i < 4; i++) {
+ arr[i].m = 12;
+ x.m(); // should throw last time through
+ }
+ } catch (exc) {
+ return exc.constructor.name;
+ }
+ return "no exception";
+}
+assertEq(testBug502914(), "TypeError");