Only record one in n line endings to save space.

src/isolate.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 <stdlib.h>
 
 #include <fstream>  // NOLINT(readability/streams)
 #include <sstream>
 
 #include "src/v8.h"
@@ skipping 493 matching lines @@
         factory()->NewJSObject(isolate_->object_function());
 
     Handle<Script> script(Script::cast(fun->shared()->script()));
 
     if (!line_key_.is_null()) {
       int script_line_offset = script->line_offset()->value();
       int line_number = Script::GetLineNumber(script, position);
       // line_number is already shifted by the script_line_offset.
       int relative_line_number = line_number - script_line_offset;
       if (!column_key_.is_null() && relative_line_number >= 0) {
-        Handle<FixedArray> line_ends(FixedArray::cast(script->line_ends()));
-        int start = (relative_line_number == 0) ? 0 :
-            Smi::cast(line_ends->get(relative_line_number - 1))->value() + 1;
-        int column_offset = position - start;
-        if (relative_line_number == 0) {
-          // For the case where the code is on the same line as the script
-          // tag.
-          column_offset += script->column_offset()->value();
-        }
+        int column = Script::GetColumnNumber(script, position);
         JSObject::AddProperty(stack_frame, column_key_,
-                              handle(Smi::FromInt(column_offset + 1), isolate_),
-                              NONE);
+                              handle(Smi::FromInt(column + 1), isolate_), NONE);
       }
       JSObject::AddProperty(stack_frame, line_key_,
                             handle(Smi::FromInt(line_number + 1), isolate_),
                             NONE);
     }
 
     if (!script_id_key_.is_null()) {
       JSObject::AddProperty(stack_frame, script_id_key_,
                             handle(script->id(), isolate_), NONE);
     }
@@ skipping 2263 matching lines @@
   // Then check whether this scope intercepts.
   if ((flag & intercept_mask_)) {
     intercepted_flags_ |= flag;
     return true;
   }
   return false;
 }
 
 }  // namespace internal
 }  // namespace v8