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 --- js/src/jit-test/tests/gc/weakmap-expose.js | 43 ++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 js/src/jit-test/tests/gc/weakmap-expose.js (limited to 'js/src/jit-test/tests/gc/weakmap-expose.js') diff --git a/js/src/jit-test/tests/gc/weakmap-expose.js b/js/src/jit-test/tests/gc/weakmap-expose.js new file mode 100644 index 0000000000..45ebc7d5a9 --- /dev/null +++ b/js/src/jit-test/tests/gc/weakmap-expose.js @@ -0,0 +1,43 @@ +// Test that WeakMap.get() doesn't return a gray GC thing. + +function checkNotGray(value) { + // Assigning a gray GC thing to an object propery will assert. + let test = {}; + test.property = value; +} + +// 1. Make a black WeakMap with a gray key and gray value. + +gczeal(0); + +let key = {}; +let value = {}; + +let map = new WeakMap(); +map.set(key, value); + +let gray = grayRoot(); +gray.key = key; + +addMarkObservers([map, key, value]); + +gray = null; +key = null; +value = null; + +gc(); + +let marks = getMarks(); +assertEq(marks[0], "black"); +assertEq(marks[1], "gray"); +assertEq(marks[2], "gray"); + +// 2. Get our key back, which will expose it and mark it black. + +key = nondeterministicGetWeakMapKeys(map)[0]; +checkNotGray(key); + +// 3. Look up the value in the map and check it's not gray. + +value = map.get(key); +checkNotGray(value); -- cgit v1.2.3