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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/gc/weakmap-nursery-value.js
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/jit-test/tests/gc/weakmap-nursery-value.js')
-rw-r--r--js/src/jit-test/tests/gc/weakmap-nursery-value.js35
1 files changed, 35 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/gc/weakmap-nursery-value.js b/js/src/jit-test/tests/gc/weakmap-nursery-value.js
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index 0000000000..9c61b56632
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+++ b/js/src/jit-test/tests/gc/weakmap-nursery-value.js
@@ -0,0 +1,35 @@
+// Bug 1715471
+
+// This test relies on triggering GC at precise points. GC zeal modes
+// interfere with this.
+gczeal(0);
+
+// This test requires enqueueMark, which is only available in a debugging
+// build.
+if (!this.enqueueMark) quit(0);
+
+var wm = new WeakMap();
+
+// Force materialization of the map struct. Otherwise it would be allocated
+// black during the incremental GC when we do wm.set.
+wm.set({}, {});
+
+var tenuredKey = Object.create(null);
+gc(); // Tenure the WeakMap and key.
+
+// Enter the GC, since otherwise the minor GC at the beginning would tenure our
+// value before it had a chance to be entered into the ephemeron edge list.
+startgc(1);
+while (gcstate() === "Prepare") gcslice(1);
+
+// Create a WeakMap entry with a value in the nursery.
+var nurseryValue = Object.create(null);
+wm.set(tenuredKey, nurseryValue);
+
+// We want to mark the weakmap first, before the key or value are marked, so
+// that the tenuredKey -> nurseryValue edge will be added to the ephemeron edge
+// table.
+enqueueMark(wm);
+
+gcslice(1000);
+minorgc();