From a35063cb627d611e77816216d0d8946794a98079 Mon Sep 17 00:00:00 2001
From: Lei Zhang <thestig@chromium.org>
Date: Wed, 25 Jul 2018 20:57:25 +0000
Subject: Change GetHeaderOffset() to return Optional<FX_FILESIZE>.

Remove |kInvalidHeaderOffset|.

Change-Id: I5978e745e97aa4e13299dd21028721725ac0c996
Reviewed-on: https://pdfium-review.googlesource.com/38853
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Art Snake <art-snake@yandex-team.ru>
---
 core/fpdfapi/parser/cpdf_data_avail.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'core/fpdfapi/parser/cpdf_data_avail.cpp')

diff --git a/core/fpdfapi/parser/cpdf_data_avail.cpp b/core/fpdfapi/parser/cpdf_data_avail.cpp
index 577b7e7a18..41d410a87b 100644
--- a/core/fpdfapi/parser/cpdf_data_avail.cpp
+++ b/core/fpdfapi/parser/cpdf_data_avail.cpp
@@ -499,15 +499,15 @@ CPDF_DataAvail::DocAvailStatus CPDF_DataAvail::CheckHeaderAndLinearized() {
     return DocAvailStatus::DataAvailable;
 
   const CPDF_ReadValidator::Session read_session(GetValidator().Get());
-  const int32_t header_offset = GetHeaderOffset(GetValidator());
+  const Optional<FX_FILESIZE> header_offset = GetHeaderOffset(GetValidator());
   if (GetValidator()->has_read_problems())
     return DocAvailStatus::DataNotAvailable;
 
-  if (header_offset == kInvalidHeaderOffset)
+  if (!header_offset)
     return DocAvailStatus::DataError;
 
   m_parser.m_pSyntax =
-      pdfium::MakeUnique<CPDF_SyntaxParser>(GetValidator(), header_offset);
+      pdfium::MakeUnique<CPDF_SyntaxParser>(GetValidator(), *header_offset);
   m_pLinearized = m_parser.ParseLinearizedHeader();
   if (GetValidator()->has_read_problems())
     return DocAvailStatus::DataNotAvailable;
-- 
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