Make sure that message reporting works when the builtin string and...

test/mjsunit/debug-sourceinfo.js

 // Copyright 2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 46 matching lines @@
 }
 
 // Get the Debug object exposed from the debug context global object.
 Debug = debug.Debug
 
 // This is the number of comment lines above the first test function.
 var comment_lines = 29;
 
 // This is the last position in the entire file (note: this equals
 // file size of <debug-sourceinfo.js> - 1, since starting at 0).
-var last_position = 14072;
+var last_position = 14312;
 // This is the last line of entire file (note: starting at 0).
-var last_line = 345;
+var last_line = 351;
 // This is the last column of last line (note: starting at 0 and +2, due
 // to trailing <CR><LF>).
-var last_column = 48;
+var last_column = 2;
 
 // This magic number is the length or the first line comment (actually number
 // of characters before 'function a(...'.
 var comment_line_length = 1726;
 var start_a = 10 + comment_line_length;
 var start_b = 37 + comment_line_length;
 var start_c = 71 + comment_line_length;
 var start_d = 163 + comment_line_length;
 
 // The position of the first line of d(), i.e. "x = 1 ;".
@@ skipping 254 matching lines @@
 location.restrict(5, 4);
 assertEquals('  c(t', location.sourceText());
 
 location = script.locationFromLine(1, 0, start_b);
 location.restrict(7, 0);
 assertEquals('  c(tru', location.sourceText());
 
 location = script.locationFromLine(1, 0, start_b);
 location.restrict(7, 6);
 assertEquals('  c(tru', location.sourceText());
+
+// Test that script.sourceLine(line) works.
+for (line = 0; line < num_lines_d; line++) {
+  var line_content_regexp = new RegExp("  x = " + (line + 1));
+  assertTrue(line_content_regexp.test(script.sourceLine(start_line_d + line)));
+}