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Add null check for format parameter in TIXML_VSCPRINTF #1064

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Add null check for format parameter in TIXML_VSCPRINTF #1064

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3 changes: 3 additions & 0 deletions tinyxml2.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -114,6 +114,9 @@ distribution.
#define TIXML_VSNPRINTF vsnprintf
static inline int TIXML_VSCPRINTF( const char* format, va_list va )
{
if (!format) {
return 0;
}
int len = vsnprintf( 0, 0, format, va );
TIXMLASSERT( len >= 0 );
return len;
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