... and use them consistently instead of naked qWarning()s.
As a drive-by, fix the warnings we generate on failures, which
all-too-often was "invalid data".
Code for minimal size by DRYing what the compiler can't, and using
Q_DECL_COLD_FUNCTION to avoid excessive inlining.
Left the one qWarning() in qCompress(), for now, because that would
have changed the return value from an empty to a null byte array.
Move invalidCompressedData() to where the others are defined, too,
because it's required by a follow-up commit.
Pick-to: 6.4 6.3 6.2
Task-number: QTBUG-104972
Change-Id: Ia43aa315960b06530e98c1d7525ccf0e7f71bb5c
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
6472616e6c