As fc_vsnprintf() fallback version uses single internal buffer for handling all the calls, it's not thread safe. Fallback functionality is used on Windows (& potentially somewhere else).
As fc_vsnprintf() is used in logging, this also breaks its supposed thread safety.
As fc_vsnprintf() fallback version uses single internal buffer for handling all the calls, it's not thread safe. Fallback functionality is used on Windows (& potentially somewhere else).
As fc_vsnprintf() is used in logging, this also breaks its supposed thread safety.