diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/debug/Script-getLineOffsets-03.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/debug/Script-getLineOffsets-03.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,36 @@
+// getLineOffsets treats one-line compound statements as having only one entry-point.
+// (A breakpoint on a line that only executes once will only hit once.)
+
+var g = newGlobal();
+g.line0 = null;
+var dbg = Debugger(g);
+var log;
+dbg.onDebuggerStatement = function (frame) {
+    var s = frame.script;
+    var lineno = g.line0 + 2;
+    var offs = s.getLineOffsets(lineno);
+    for (var i = 0; i < offs.length; i++) {
+        assertEq(s.getOffsetLine(offs[i]), lineno);
+        s.setBreakpoint(offs[i], {hit: function () { log += 'B'; }});
+    }
+    log += 'A';
+};
+
+function test(s) {
+    log = '';
+    g.eval("line0 = Error().lineNumber;\n" +
+           "debugger;\n" +  // line0 + 1
+           s);              // line0 + 2
+    assertEq(log, 'AB');
+}
+
+g.i = 0;
+g.j = 0;
+test("{i++; i--; i++; i--; }");
+test("if (i === 0) i++; else i--;");
+test("while (i < 5) i++;");
+test("do --i; while (i > 0);");
+test("for (i = 0; i < 5; i++) j++;");
+test("for (var x in [0, 1, 2]) j++;");
+test("switch (i) { case 0: j = 0; case 1: j = 1; case 2: j = 2; default: j = i; }");
+test("switch (i) { case 'A': j = 0; case 'B': j = 1; case 'C': j = 2; default: j = i; }");