[debugger] account for script source offsets in --print-break-location.

src/debug/debug.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/debug/debug.h"
 
 #include "src/api.h"
 #include "src/arguments.h"
 #include "src/bootstrapper.h"
 #include "src/code-stubs.h"
@@ skipping 2240 matching lines @@
   int source_position =
       summary.abstract_code()->SourcePosition(summary.code_offset());
   Handle<Object> script_obj(summary.function()->shared()->script(), isolate_);
   PrintF("[debug] break in function '");
   summary.function()->PrintName();
   PrintF("'.\n");
   if (script_obj->IsScript()) {
     Handle<Script> script = Handle<Script>::cast(script_obj);
     Handle<String> source(String::cast(script->source()));
     Script::InitLineEnds(script);
-    int line = Script::GetLineNumber(script, source_position);
-    int column = Script::GetColumnNumber(script, source_position);
+    int line =
+        Script::GetLineNumber(script, source_position) - script->line_offset();
+    int column = Script::GetColumnNumber(script, source_position) -
+                 (line == 0 ? script->column_offset() : 0);
     Handle<FixedArray> line_ends(FixedArray::cast(script->line_ends()));
     int line_start =
         line == 0 ? 0 : Smi::cast(line_ends->get(line - 1))->value() + 1;
     int line_end = Smi::cast(line_ends->get(line))->value();
     DisallowHeapAllocation no_gc;
     String::FlatContent content = source->GetFlatContent();
     if (content.IsOneByte()) {
       PrintF("[debug] %.*s\n", line_end - line_start,
              content.ToOneByteVector().start() + line_start);
       PrintF("[debug] ");
@@ skipping 311 matching lines @@
 }
 
 
 void LockingCommandMessageQueue::Clear() {
   base::LockGuard<base::Mutex> lock_guard(&mutex_);
   queue_.Clear();
 }
 
 }  // namespace internal
 }  // namespace v8