diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/parser/bug-975484.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/parser/bug-975484.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,7 @@
+var loc = Reflect.parse("f()").body[0].expression.loc;
+assertEq(loc.start.column, 0);
+assertEq(loc.end.column, 3);
+
+loc = Reflect.parse("f(x)").body[0].expression.loc;
+assertEq(loc.start.column, 0);
+assertEq(loc.end.column, 4);