1 files changed, 14 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/regexp/bug1445907.js b/js/src/jit-test/tests/regexp/bug1445907.js
new file mode 100644
index 0000000000..a0e0dca57b
--- /dev/null
+++ b/js/src/jit-test/tests/regexp/bug1445907.js
@@ -0,0 +1,14 @@
+// |jit-test| skip-if: !wasmDebuggingEnabled()
+
+// On ARM64, we failed to save x28 properly when generating code for the regexp
+// matcher.
+//
+// There's wasm and Debugger code here because the combination forces the use of
+// x28 and exposes the bug when running on the simulator.
+
+var g = newGlobal({newCompartment: true});
+var dbg = new Debugger(g);
+g.eval(`var m = new WebAssembly.Instance(new WebAssembly.Module(wasmTextToBinary('(module (func (export "test")))')))`);
+var re = /./;
+dbg.onEnterFrame = function(frame) { re.exec("x") };
+result = g.eval("m.exports.test()");