ca1a9ebac5
it was invoking ZSTD_initCStream_advanced() with pledgedSrcSize==0 and contentSizeFlag=1 which means "empty" while the intention was to mean "unknown". The contentSizeFlag==1 is new, it is a consequence of setting this value to 1 by default. The solution selected here is to pass ZSTD_CONTENTSIZE_UNKNOWN to mean "unknown". So contentSizeFlag remains set (it wasn't in previous versions).
Zstandard Documentation
This directory contains material defining the Zstandard format,
as well as for help using the zstd library.
zstd_compression_format.md : This document defines the Zstandard compression format.
Compliant decoders must adhere to this document,
and compliant encoders must generate data that follows it.
educational_decoder : This directory contains an implementation of a Zstandard decoder,
compliant with the Zstandard compression format.
It can be used, for example, to better understand the format,
or as the basis for a separate implementation a Zstandard decoder/encoder.
zstd_manual.html : Documentation on the functions found in zstd.h.
See http://zstd.net/zstd_manual.html for
the manual released with the latest official zstd release.