Use UnownedPtr to check CFX_*StringC lifetimeschromium/3104

Change interform to avoid temp StringC with dangling ptr.

Change-Id: I8d8659973bcdf2cdbcaa6efa6012e4acce5f1604
Reviewed-on: https://pdfium-review.googlesource.com/5571
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>

4 files changed, 11 insertions, 11 deletions

diff --git a/core/fpdfdoc/cpdf_filespec.cpp b/core/fpdfdoc/cpdf_filespec.cpp
index 7fe8ec8c03..59915eaa05 100644
--- a/core/fpdfdoc/cpdf_filespec.cpp
+++ b/core/fpdfdoc/cpdf_filespec.cpp
@@ -50,7 +50,7 @@ CFX_WideString ChangeSlashToPDF(const wchar_t* str) {
 
 }  // namespace
 
-CFX_WideString CPDF_FileSpec::DecodeFileName(const CFX_WideStringC& filepath) {
+CFX_WideString CPDF_FileSpec::DecodeFileName(const CFX_WideString& filepath) {
   if (filepath.GetLength() <= 1)
     return CFX_WideString();
 
@@ -108,7 +108,7 @@ bool CPDF_FileSpec::GetFileName(CFX_WideString* csFileName) const {
   } else {
     return false;
   }
-  *csFileName = DecodeFileName(csFileName->AsStringC());
+  *csFileName = DecodeFileName(*csFileName);
   return true;
 }
 
@@ -116,7 +116,7 @@ CPDF_FileSpec::CPDF_FileSpec(CPDF_Object* pObj) : m_pObj(pObj) {}
 
 CPDF_FileSpec::~CPDF_FileSpec() {}
 
-CFX_WideString CPDF_FileSpec::EncodeFileName(const CFX_WideStringC& filepath) {
+CFX_WideString CPDF_FileSpec::EncodeFileName(const CFX_WideString& filepath) {
   if (filepath.GetLength() <= 1)
     return CFX_WideString();
 
@@ -145,7 +145,7 @@ CFX_WideString CPDF_FileSpec::EncodeFileName(const CFX_WideStringC& filepath) {
 #endif
 }
 
-void CPDF_FileSpec::SetFileName(const CFX_WideStringC& wsFileName) {
+void CPDF_FileSpec::SetFileName(const CFX_WideString& wsFileName) {
   if (!m_pObj)
     return;
 
diff --git a/core/fpdfdoc/cpdf_filespec.h b/core/fpdfdoc/cpdf_filespec.h
index fb71b57186..04baf2e63f 100644
--- a/core/fpdfdoc/cpdf_filespec.h
+++ b/core/fpdfdoc/cpdf_filespec.h
@@ -20,16 +20,16 @@ class CPDF_FileSpec {
   ~CPDF_FileSpec();
 
   // Convert a platform dependent file name into pdf format.
-  static CFX_WideString EncodeFileName(const CFX_WideStringC& filepath);
+  static CFX_WideString EncodeFileName(const CFX_WideString& filepath);
 
   // Convert a pdf file name into platform dependent format.
-  static CFX_WideString DecodeFileName(const CFX_WideStringC& filepath);
+  static CFX_WideString DecodeFileName(const CFX_WideString& filepath);
 
   CPDF_Object* GetObj() const { return m_pObj.Get(); }
   bool GetFileName(CFX_WideString* wsFileName) const;
 
   // Set this file spec to refer to a file name (not a url).
-  void SetFileName(const CFX_WideStringC& wsFileName);
+  void SetFileName(const CFX_WideString& wsFileName);
 
  private:
   CFX_UnownedPtr<CPDF_Object> const m_pObj;
diff --git a/core/fpdfdoc/cpdf_interform.cpp b/core/fpdfdoc/cpdf_interform.cpp
index 766ec6cd4f..88787d2e5b 100644
--- a/core/fpdfdoc/cpdf_interform.cpp
+++ b/core/fpdfdoc/cpdf_interform.cpp
@@ -1179,7 +1179,7 @@ bool CPDF_InterForm::CheckRequiredFields(
 }
 
 std::unique_ptr<CFDF_Document> CPDF_InterForm::ExportToFDF(
-    const CFX_WideStringC& pdf_path,
+    const CFX_WideString& pdf_path,
     bool bSimpleFileSpec) const {
   std::vector<CPDF_FormField*> fields;
   size_t nCount = m_pFieldTree->m_Root.CountFields();
@@ -1189,7 +1189,7 @@ std::unique_ptr<CFDF_Document> CPDF_InterForm::ExportToFDF(
 }
 
 std::unique_ptr<CFDF_Document> CPDF_InterForm::ExportToFDF(
-    const CFX_WideStringC& pdf_path,
+    const CFX_WideString& pdf_path,
     const std::vector<CPDF_FormField*>& fields,
     bool bIncludeOrExclude,
     bool bSimpleFileSpec) const {
diff --git a/core/fpdfdoc/cpdf_interform.h b/core/fpdfdoc/cpdf_interform.h
index 5399392734..23530e57b2 100644
--- a/core/fpdfdoc/cpdf_interform.h
+++ b/core/fpdfdoc/cpdf_interform.h
@@ -71,11 +71,11 @@ class CPDF_InterForm {
   bool CheckRequiredFields(const std::vector<CPDF_FormField*>* fields,
                            bool bIncludeOrExclude) const;
 
-  std::unique_ptr<CFDF_Document> ExportToFDF(const CFX_WideStringC& pdf_path,
+  std::unique_ptr<CFDF_Document> ExportToFDF(const CFX_WideString& pdf_path,
                                              bool bSimpleFileSpec) const;
 
   std::unique_ptr<CFDF_Document> ExportToFDF(
-      const CFX_WideStringC& pdf_path,
+      const CFX_WideString& pdf_path,
       const std::vector<CPDF_FormField*>& fields,
       bool bIncludeOrExclude,
       bool bSimpleFileSpec) const;