[Interpreter] Fix bytecode offset for stack overflows.

test/mjsunit/stack-traces-overflow.js

Index: test/mjsunit/stack-traces-overflow.js
diff --git a/test/mjsunit/stack-traces-overflow.js b/test/mjsunit/stack-traces-overflow.js
index e20c6091d773c4b29c7b53db101b8779b064bd57..af81971af1ee902e1a8b3f0e31c5bc1495ef23c4 100644
--- a/test/mjsunit/stack-traces-overflow.js
+++ b/test/mjsunit/stack-traces-overflow.js
@@ -27,10 +27,22 @@
 
 // Flags: --stack-size=100
 
+function overflow() {
+  var a, b, c, d, e;  // Allocates some locals on the function's stack frame.
+  overflow();
+}
 function rec1(a) { rec1(a+1); }
 function rec2(a) { rec3(a+1); }
 function rec3(a) { rec2(a+1); }
 
+// Test stack trace has correct function location at top of the stack.
+try {
+  overflow();
+} catch (e) {
+  var first_frame = e.stack.split("\n")[1]
+  assertTrue(first_frame.indexOf("stack-traces-overflow.js:30:18") > 0);
+}
+
 // Test stack trace getter and setter.
 try {
   rec1(0);