1 files changed, 53 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Script-getLineOffsets-04.js b/js/src/jit-test/tests/debug/Script-getLineOffsets-04.js
new file mode 100644
index 0000000000..9e828b8af6
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Script-getLineOffsets-04.js
@@ -0,0 +1,53 @@
+// getLineOffsets works with instructions reachable only by breaking out of a loop or switch.
+
+var g = newGlobal({newCompartment: true});
+g.line0 = null;
+var dbg = Debugger(g);
+var where;
+dbg.onDebuggerStatement = function (frame) {
+    var s = frame.eval("f").return.script;
+    var lineno = g.line0 + where;
+    var offs = s.getLineOffsets(lineno);
+    for (var i = 0; i < offs.length; i++) {
+        assertEq(s.getOffsetLocation(offs[i]).lineNumber, lineno);
+        s.setBreakpoint(offs[i], {hit: function () { g.log += 'B'; }});
+    }
+    g.log += 'A';
+};
+
+function test(s) {
+    var count = (s.split(/\n/).length - 1); // number of newlines in s
+    g.log = '';
+    where = 3 + count + 1;
+    g.eval("line0 = Error().lineNumber;\n" +
+           "debugger;\n" +          // line0 + 1
+           "function f(i) {\n" +    // line0 + 2
+           s +                      // line0 + 3 ... line0 + where - 2
+           "    log += '?';\n" +    // line0 + where - 1
+           "    log += '!';\n" +    // line0 + where
+           "}\n");
+    g.f(0);
+    assertEq(g.log, 'A?B!');
+}
+
+test("i = 128;\n" +
+     "for (;;) {\n" +
+     "    var x = i - 10;;\n" +
+     "    if (x < 0)\n" +
+     "        break;\n" +
+     "    i >>= 2;\n" +
+     "}\n");
+
+test("while (true)\n" +
+     "    if (++i === 2) break;\n");
+
+test("do {\n" +
+     "    if (++i === 2) break;\n" +
+     "} while (true);\n");
+
+test("switch (i) {\n" +
+     "  case 2: return 7;\n" +
+     "  case 1: return 8;\n" +
+     "  case 0: break;\n" +
+     "  default: return -i;\n" +
+     "}\n");