1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/wasm/arm-hwcap-madness.js b/js/src/jit-test/tests/wasm/arm-hwcap-madness.js
new file mode 100644
index 0000000000..cb3b281619
--- /dev/null
+++ b/js/src/jit-test/tests/wasm/arm-hwcap-madness.js
@@ -0,0 +1,31 @@
+// |jit-test| skip-if: !getBuildConfiguration().arm; test-also=--arm-hwcap=armv7,vfp
+
+// The command line options disable the idiv instruction and thus make the
+// baseline compiler unavailable, so we must be prepared for a run-time error
+// below in the baseline-only configuration.
+
+// The flags above should be sufficient for there to be a WebAssembly object.
+assertEq(typeof WebAssembly, "object");
+
+try {
+    var i = new WebAssembly.Instance(
+        new WebAssembly.Module(
+            wasmTextToBinary('(module (func (export "") (result i32) (i32.const 42)))')));
+    assertEq(i.exports[""](), 42);
+} catch (e) {
+    if (String(e).match(/no WebAssembly compiler available/)) {
+        switch (wasmCompileMode()) {
+        case "none":
+            // This is fine: the limited feature set combined with command line
+            // compiler selection caused all compilers to be disabled.
+            break;
+        default:
+            // This is not fine: if there's a compiler available then we should
+            // not get an error.
+            throw e;
+        }
+    } else {
+        // Some other error, propagate it.
+        throw e;
+    }
+}