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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /js/src/jit-test/tests/gc/weakmap-expose.js | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | js/src/jit-test/tests/gc/weakmap-expose.js | 43 |
1 files changed, 43 insertions, 0 deletions
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); |