Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 19 insertions, 0 deletions

diff --git a/tools/profiler/tests/xpcshell/test_enterjit_osr_disabling.js b/tools/profiler/tests/xpcshell/test_enterjit_osr_disabling.js
new file mode 100644
index 0000000000..2d4ffe5a10
--- /dev/null
+++ b/tools/profiler/tests/xpcshell/test_enterjit_osr_disabling.js
@@ -0,0 +1,19 @@
+function run_test() {
+  // Just skip the test if the profiler component isn't present.
+  if (!AppConstants.MOZ_GECKO_PROFILER) {
+    return;
+  }
+
+  Assert.ok(!Services.profiler.IsActive());
+
+  Services.profiler.StartProfiler(100, 10, ["js"]);
+  // The function is entered with the profiler enabled
+  (function() {
+    Services.profiler.StopProfiler();
+    let n = 10000;
+    // eslint-disable-next-line no-empty
+    while (--n) {} // OSR happens here with the profiler disabled.
+    // An assertion will fail when this function returns, if the
+    // profiler stack was misbalanced.
+  })();
+}