Paul Eggert 897c1dd9a9 Fix the problem with union yyalloc and C++. ...

* src/bison.simple (union yyalloc, YYSTACK_GAP_MAX, YYSTACK_BYTES,
YYSTACK_RELOCATE): Do not define if yyoverflow is defined, or if
this is a C++ parser and YYSTYPE or YYLTYPE has nontrivial
constructors or destructors.
(yymemcpy) [! defined YYSTACK_RELOCATE]: Do not define; not needed.
(yyparse) [! defined YYSTACK_RELOCATE]: Do not relocate the stack.

* src/reader.c (parse_union_decl): Define YYSTYPE_IS_TRIVIAL if we
use our YYSTYPE.  It must be trivial, or our own union wouldn't be
valid C++ anyway.
(readgram): Define YYSTYPE_IS_TRIVIAL if it is int.
(reader_output_yylsp): Define YYLTYPE_IS_TRIVIAL if we use our
YYLTYPE.

2002-03-18 21:53:39 +00:00

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