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state before an empty RHS is always resolved here. Only the location of that state is guaranteed to be resolved, and that's enough. This fixes the remaining bug reported by Derek M. Jones in <http://lists.gnu.org/archive/html/bug-bison/2006-05/msg00027.html>. * tests/glr-regression.at (Uninitialized location when reporting ambiguity): Test the above case. Also, the embedded comments in this test case claim it checks the case of an empty RHS that has inherited the initial location. However, the corresponding LHS was already resolved, so yyresolveLocations didn't actually have reason to modify it. Fix this by forcing nondeterministic operation at the beginning of the parse.
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