On Sun, Jul 26, 2015 at 5:15 PM, Vlad Khorsun <hv...@users.sourceforge.net> wrote:
> > > > > Or is there a reason to ignore those higher bits for the facility and > code? > > I have no idea why ENCODE_ISC_MSG written in this way. > > > CLASS_MASK seems to not be used anywhere, or at least I can't remember > > ever having seen an error code with the bit 30 (warning) or 31 (info) > > set. Or is it used somewhere internally as an in-band channel? > > Looks like something planned at the past (before Firebird) but never > used... > Firebird was based on InterBase which was based on Rdb/ELN, an implementation of DEC's [standard(!)] relational interface. As part of DEC's VAX software empire, DSRI used DEC's error message facility. Every project had a code and used it as a prefix to its error messages. Cheers, Ann
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