Akim Demaille d8ce703102 diagnostics: use appropriate location for useless precedence/associativity ...

* src/symtab.c (symbol_precedence_set): Use prec_location, not
location (which is the first occurrence of the symbol, possibly just
%token).
Also, as redefinitions are not allowed, keep the first values, not
the subsequent ones.
* tests/conflicts.at, tests/existing.at, tests/regression.at: Adjust.

2013-04-22 11:36:22 +02:00

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