Akim Demaille ad9d4f9f2e c++: use __attribute__((__pure__)) to avoid warnings ...

Building C++ parsers with -Wsuggest-attribute=const and
-Wsuggest-attribute=noreturn triggers warning in generated code.

* data/lalr1.cc: Call b4_attribute_define.
(debug_stream, debug_level): Flag as pure.
* tests/headers.at (Several parsers): There are now more YY macros
that "leak".

2013-11-05 10:44:03 +01:00

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