Debugger: consider try-finally scopes not catching wrt debug events.

src/full-codegen.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/v8.h"
 
 #include "src/ast.h"
 #include "src/ast-numbering.h"
 #include "src/code-factory.h"
 #include "src/codegen.h"
@@ skipping 1191 matching lines @@
     Visit(stmt->catch_block());
   }
   // Restore the context.
   LoadContextField(context_register(), Context::PREVIOUS_INDEX);
   StoreToFrameField(StandardFrameConstants::kContextOffset, context_register());
   scope_ = saved_scope;
   __ jmp(&exit);
 
   // Try block code. Sets up the exception handler chain.
   __ bind(&try_entry);
+
+  try_catch_depth_++;
   EnterTryBlock(stmt->index(), &handler_entry);
   { TryCatch try_body(this);
     Visit(stmt->try_block());
   }
   ExitTryBlock(stmt->index());
+  try_catch_depth_--;
   __ bind(&exit);
 }
 
 
 void FullCodeGenerator::VisitTryFinallyStatement(TryFinallyStatement* stmt) {
   Comment cmnt(masm_, "[ TryFinallyStatement");
   SetStatementPosition(stmt);
   // Try finally is compiled by setting up a try-handler on the stack while
   // executing the try body, and removing it again afterwards.
   //
@@ skipping 194 matching lines @@
   Comment cmnt(masm_, "[ Throw");
   VisitForStackValue(expr->exception());
   SetSourcePosition(expr->position());
   __ CallRuntime(Runtime::kThrow, 1);
   // Never returns here.
 }
 
 
 void FullCodeGenerator::EnterTryBlock(int index, Label* handler) {
   handler_table()->SetRangeStart(index, masm()->pc_offset());
-  handler_table()->SetRangeHandler(index, handler->pos());
+  HandlerTable::CatchPrediction prediction =
+      try_catch_depth_ > 0 ? HandlerTable::CAUGHT : HandlerTable::UNCAUGHT;
+  handler_table()->SetRangeHandler(index, handler->pos(), prediction);
 
   // Determine expression stack depth of try statement.
   int stack_depth = info_->scope()->num_stack_slots();  // Include stack locals.
   for (NestedStatement* current = nesting_stack_; current != NULL; /*nop*/) {
     current = current->AccumulateDepth(&stack_depth);
   }
   handler_table()->SetRangeDepth(index, stack_depth);
 
   // Push context onto operand stack.
   STATIC_ASSERT(TryBlockConstant::kElementCount == 1);
@@ skipping 195 matching lines @@
   }
   codegen_->PrepareForBailoutForId(exit_id_, NO_REGISTERS);
   codegen_->scope_ = saved_scope_;
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal