[PyQt] bison warnings when regenerating sip parser

[Dmitry Shachnev]

Hi Phil,

I tried regenerating parser.{c,h} files in sip as described in metasrc/README,
and Bison complains about this:

sipgen/metasrc/parser.y: warning: 2 shift/reduce conflicts [-Wconflicts-sr]

The (gzipped) parser.output file containing details is attached.
Can this be ignored, or is this a bug in the parser.y file?

The version of Bison on my system is 3.0.4 (while you seemed to use 2.3).

-- 
Dmitry Shachnev
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