VM: Fix sticky matching for anchored regexps on interpreter.

runtime/vm/regexp.cc

 // Copyright (c) 2014, 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/regexp.h"
 
 #include "vm/dart_entry.h"
 #include "vm/regexp_assembler.h"
 #include "vm/regexp_assembler_bytecode.h"
 #include "vm/regexp_assembler_ir.h"
@@ skipping 4986 matching lines @@
 
   // Bytecode regexp implementation.
 
   ZoneGrowableArray<uint8_t> buffer(zone, 1024);
   BytecodeRegExpMacroAssembler* macro_assembler =
       new (zone) BytecodeRegExpMacroAssembler(&buffer, zone);
 
   // Inserted here, instead of in Assembler, because it depends on information
   // in the AST that isn't replicated in the Node structure.
   static const intptr_t kMaxBacksearchLimit = 1024;
-  if (is_end_anchored && !is_start_anchored &&
+  if (is_end_anchored && !is_start_anchored && !is_sticky &&
       max_length < kMaxBacksearchLimit) {
     macro_assembler->SetCurrentPositionFromEnd(max_length);
   }
 
   if (is_global) {
     macro_assembler->set_global_mode(
         (data->tree->min_match() > 0)
             ? RegExpMacroAssembler::GLOBAL_NO_ZERO_LENGTH_CHECK
             : RegExpMacroAssembler::GLOBAL);
   }
@@ skipping 90 matching lines @@
       CreateSpecializedFunction(thread, zone, regexp, cid, /*sticky=*/true,
                                 owner);
     }
   }
 
   return regexp.raw();
 }
 
 
 }  // namespace dart