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* NEWS: Mention this. * data/skeletons/c.m4 (b4_int_type): Prefer char if it will do, and prefer signed types to unsigned if either will do. * data/skeletons/glr.c (yy_reduce_print): No need to convert rule line to unsigned long. (yyrecoverSyntaxError): Put action into an int to avoid GCC warning of using a char subscript. * data/skeletons/lalr1.cc (yy_lac_check_, yysyntax_error_): Prefer ptrdiff_t to size_t. * data/skeletons/yacc.c (b4_int_type): Prefer signed types to unsigned if either will do. * data/skeletons/yacc.c (b4_declare_parser_state_variables): (YYSTACK_RELOCATE, YYCOPY, yy_lac_stack_realloc, yy_lac) (yytnamerr, yysyntax_error, yyparse): Prefer ptrdiff_t to size_t. (YYPTRDIFF_T, YYPTRDIFF_MAXIMUM): New macros. (YYSIZE_T): Fix "! defined YYSIZE_T" typo. (YYSIZE_MAXIMUM): Take the minimum of PTRDIFF_MAX and SIZE_MAX. (YYSIZEOF): New macro. (YYSTACK_GAP_MAXIMUM, YYSTACK_BYTES, YYSTACK_RELOCATE) (yy_lac_stack_realloc, yyparse): Use it. (YYCOPY, yy_lac_stack_realloc): Cast to YYSIZE_T to pacify GCC. (yy_reduce_print): Use int instead of unsigned long when int will do. (yy_lac_stack_realloc): Prefer long to unsigned long when either will do. * tests/regression.at: Adjust to these changes.