1 files changed, 20 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/wasm/binary-slow.js b/js/src/jit-test/tests/wasm/binary-slow.js
new file mode 100644
index 0000000000..0bff1bda0b
--- /dev/null
+++ b/js/src/jit-test/tests/wasm/binary-slow.js
@@ -0,0 +1,20 @@
+load(libdir + "wasm-binary.js");
+
+const wasmEval = (code, imports) => new WebAssembly.Instance(new WebAssembly.Module(code), imports).exports;
+const v2vSig = {args:[], ret:VoidCode};
+const v2vSigSection = sigSection([v2vSig]);
+
+// Deep nesting shouldn't crash or even throw. This test takes a long time to
+// run with the JITs disabled, so to avoid occasional timeout, disable. Also
+// in eager mode, this triggers pathological recompilation, so only run for
+// "normal" JIT modes. This test is totally independent of the JITs so this
+// shouldn't matter.
+var jco = getJitCompilerOptions();
+if (jco["ion.enable"] && jco["baseline.enable"] && jco["baseline.warmup.trigger"] > 0 && jco["ion.warmup.trigger"] > 10) {
+    var manyBlocks = [];
+    for (var i = 0; i < 20000; i++)
+        manyBlocks.push(BlockCode, VoidCode);
+    for (var i = 0; i < 20000; i++)
+        manyBlocks.push(EndCode);
+    wasmEval(moduleWithSections([v2vSigSection, declSection([0]), bodySection([funcBody({locals:[], body:manyBlocks})])]));
+}