[PATCH 0/4] glr2.cc: fix more warnings

[Akim Demaille]

The CI is still red of several platforms, which is troublesome when
testing other branches.  The first and third patches address some of
them.  The other cleans up a few issues.

The CI results for these commits are available in
https://travis-ci.org/github/akimd/bison/builds/726745365.

Akim Demaille (4):
  glr2.cc: disable incorrect warnings from GCC6 to 9
  glr.cc, glr2.cc: don't publish compiler pragmas
  glr2.cc: avoid type-punning issues
  c++: variants: minor simplification

 TODO                      | 13 ++++++--
 data/skeletons/glr.cc     | 38 ++++++++++-----------
 data/skeletons/glr2.cc    | 69 +++++++++++++++++++++++++++------------
 data/skeletons/variant.hh | 12 +++----
 tests/regression.at       |  3 +-
 5 files changed, 85 insertions(+), 50 deletions(-)

-- 
2.28.0