Akim Demaille baea8cf9fa glr2.cc: provide glr_state with a genuine copy-constructor ...

The copy constructor was (lazily) implemented by a call to copyFrom.
Unfortunately copyFrom reads yyresolved from the destination (and
source), and in the case of the copy-ctor this is random garbagge,
which UBSAN catches:

    glr-regr2a.cc:1072:10: runtime error: load of value 7, which is not a valid value for type 'bool'

Rather than defining yyresolved before calling copyFrom, let's just
provide a genuine cpy-ctor for glr_state.

* data/skeletons/glr2.cc (glr_state::glr_state): Implement properly.

2020-12-25 11:04:53 +01:00

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