From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- .../jit-test/tests/basic/eval-json-differences.js | 25 ++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 js/src/jit-test/tests/basic/eval-json-differences.js (limited to 'js/src/jit-test/tests/basic/eval-json-differences.js') diff --git a/js/src/jit-test/tests/basic/eval-json-differences.js b/js/src/jit-test/tests/basic/eval-json-differences.js new file mode 100644 index 0000000000..eb7ff3389b --- /dev/null +++ b/js/src/jit-test/tests/basic/eval-json-differences.js @@ -0,0 +1,25 @@ +load(libdir + "asserts.js"); + +// eval({__proto__}) changes [[Prototype]] +var obj = eval('({"__proto__": null})'); +assertEq(Object.getPrototypeOf(obj), null); +assertEq(Object.prototype.hasOwnProperty.call(obj, "__proto__"), false); + +// JSON.parse({__proto__}) creates new property __proto__ +obj = JSON.parse('{"__proto__": null}'); +assertEq(Object.getPrototypeOf(obj), Object.prototype); +assertEq(Object.prototype.hasOwnProperty.call(obj, "__proto__"), true); + +// If __proto__ appears more than once as quoted or unquoted property name in an +// object initializer expression, that's an error. +//(No other property name has this restriction.)" +assertThrowsInstanceOf(() => + eval('({ "__proto__" : null, "__proto__" : null })'), SyntaxError); + +assertThrowsInstanceOf(() => + eval(' ({ "__proto__" : null, "__proto__" : null })'), SyntaxError); + +// JSON.parse doesn't care about duplication, the last definition counts. +obj = JSON.parse('{"__proto__": null, "__proto__": 5}'); +assertEq(Object.getPrototypeOf(obj), Object.prototype); +assertEq(obj["__proto__"], 5); -- cgit v1.2.3