1 files changed, 21 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Memory-drainAllocationsLog-04.js b/js/src/jit-test/tests/debug/Memory-drainAllocationsLog-04.js
new file mode 100644
index 000000000..169db55d0
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Memory-drainAllocationsLog-04.js
@@ -0,0 +1,21 @@
+// Test that when we shorten the maximum log length, we won't get a longer log
+// than that new maximum afterwards.
+
+const root = newGlobal();
+const dbg = new Debugger();
+dbg.addDebuggee(root)
+
+dbg.memory.trackingAllocationSites = true;
+
+root.eval([
+  "this.alloc1 = {};", // line 1
+  "this.alloc2 = {};", // line 2
+  "this.alloc3 = {};", // line 3
+  "this.alloc4 = {};", // line 4
+].join("\n"));
+
+dbg.memory.maxAllocationsLogLength = 1;
+const allocs = dbg.memory.drainAllocationsLog();
+
+// Should have trimmed down to the new maximum length.
+assertEq(allocs.length, 1);