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public: workaround when empty string is passed to COM_ExtractFilePath (should make safe COM_ExtractFilePath)

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This commit is contained in:
Alibek Omarov 2023-10-27 08:38:20 +03:00
parent 78bc177e05
commit fe407fbe00
1 changed files with 8 additions and 1 deletions
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9
public/crtlib.c
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@ -642,7 +642,14 @@ COM_ExtractFilePath
*/ */
void COM_ExtractFilePath( const char *path, char *dest ) void COM_ExtractFilePath( const char *path, char *dest )
{ {
const char *src = path + Q_strlen( path ) - 1; size_t len = Q_strlen( path );
const char *src = path + len - 1;
if( len == 0 )
{
dest[0] = 0;
return;
}
// back up until a \ or the start // back up until a \ or the start
while( src != path && !(*(src - 1) == '\\' || *(src - 1) == '/' )) while( src != path && !(*(src - 1) == '\\' || *(src - 1) == '/' ))