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-rw-r--r--core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp12
1 files changed, 11 insertions, 1 deletions
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
index 85cf034c1f..bb29595721 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
@@ -31,6 +31,16 @@ FX_BOOL _PDF_HasInvalidOpChar(FX_LPCSTR op)
}
return FALSE;
}
+class CPDF_StreamParserAutoClearer {
+ public:
+ CPDF_StreamParserAutoClearer(CPDF_StreamParser** scoped_variable, CPDF_StreamParser* new_parser)
+ : scoped_variable_(scoped_variable) {
+ *scoped_variable_ = new_parser;
+ }
+ ~CPDF_StreamParserAutoClearer() { *scoped_variable_ = NULL; }
+ private:
+ CPDF_StreamParser** scoped_variable_;
+};
FX_DWORD CPDF_StreamContentParser::Parse(FX_LPCBYTE pData, FX_DWORD dwSize, FX_DWORD max_cost)
{
if (m_Level > _FPDF_MAX_FORM_LEVEL_) {
@@ -38,7 +48,7 @@ FX_DWORD CPDF_StreamContentParser::Parse(FX_LPCBYTE pData, FX_DWORD dwSize, FX_D
}
FX_DWORD InitObjCount = m_pObjectList->CountObjects();
CPDF_StreamParser syntax(pData, dwSize);
- m_pSyntax = &syntax;
+ CPDF_StreamParserAutoClearer auto_clearer(&m_pSyntax, &syntax);
m_CompatCount = 0;
while (1) {
FX_DWORD cost = m_pObjectList->CountObjects() - InitObjCount;