Add m-esr52 at 52.6.0

1 files changed, 22 insertions, 0 deletions

diff --git a/js/src/jit-test/tests/wasm/backtrace.js b/js/src/jit-test/tests/wasm/backtrace.js
new file mode 100644
index 000000000..96a069119
--- /dev/null
+++ b/js/src/jit-test/tests/wasm/backtrace.js
@@ -0,0 +1,22 @@
+load(libdir + "wasm.js");
+
+var code = `(module
+  (import $i "env" "test")
+  (func $t (call $i))
+  (export "test" $t)
+)`;
+var mod = wasmEvalText(code, {
+  env: {
+    test: function() {
+       // Expecting 3 lines in the backtrace (plus last empty).
+       // The middle one is for the wasm function.
+       var s = getBacktrace();
+       assertEq(s.split('\n').length, 4);
+       assertEq(s.split('\n')[1].startsWith("1 wasm-function[1]("), true);
+
+       // Let's also run DumpBacktrace() to check if we are not crashing.
+       backtrace();
+    }
+  }
+}).exports;
+mod.test();