Allow breakpoints on strict equal

runtime/vm/debugger.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/debugger.h"
 
 #include "include/dart_api.h"
 
 #include "vm/code_generator.h"
 #include "vm/code_patcher.h"
@@ skipping 1224 matching lines @@
   }
   intptr_t first_token_idx, last_token_idx;
   script.TokenRangeAtLine(line_number, &first_token_idx, &last_token_idx);
   if (first_token_idx < 0) {
     // Script does not contain the given line number.
     if (FLAG_verbose_debug) {
       OS::Print("Script '%s' does not contain line number %"Pd"\n",
                 script_url.ToCString(), line_number);
     }
     return NULL;
+  } else if (last_token_idx < 0) {
+    // Line does not contain any tokens. first_token_index is the first
+    // token after the given line. We check whether that token is
+    // part of a function.
+    last_token_idx = first_token_idx;
   }
 
   Function& func = Function::Handle(isolate_);
   while (first_token_idx <= last_token_idx) {
     func = lib.LookupFunctionInScript(script, first_token_idx);
     if (!func.IsNull()) {
       break;
     }
     first_token_idx++;
   }
@@ skipping 575 matching lines @@
 }
 
 
 void Debugger::RegisterCodeBreakpoint(CodeBreakpoint* bpt) {
   ASSERT(bpt->next() == NULL);
   bpt->set_next(code_breakpoints_);
   code_breakpoints_ = bpt;
 }
 
 }  // namespace dart