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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /js/src/jit-test/tests/ion/PurgeProtoChain.js
parentInitial commit. (diff)
downloadfirefox-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/ion/PurgeProtoChain.js10
1 files changed, 10 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/PurgeProtoChain.js b/js/src/jit-test/tests/ion/PurgeProtoChain.js
new file mode 100644
index 0000000000..b6319464ab
--- /dev/null
+++ b/js/src/jit-test/tests/ion/PurgeProtoChain.js
@@ -0,0 +1,10 @@
+// In a proto chain A-->B-->C, shadowing C.x with B.x must change C's shape.
+
+var C = {x: 1};
+var B = Object.create(C);
+var A = Object.create(B);
+for (var i = 0; i < 2000; i++) {
+ if (i == 1900)
+ B.x = 3;
+ assertEq(A.x, i < 1900 ? 1 : 3);
+}