Added a few dozens large grammars, found on GitHub,

written for ocamlyacc and menhir.

bench/good/JSParse.exp

+File "JSParse.mly", line 83, characters 22-33:
+Warning: the token FRWabstract is unused.
+File "JSParse.mly", line 84, characters 22-32:
+Warning: the token FRWboolean is unused.
+File "JSParse.mly", line 85, characters 22-29:
+Warning: the token FRWbyte is unused.
+File "JSParse.mly", line 86, characters 22-29:
+Warning: the token FRWchar is unused.
+File "JSParse.mly", line 87, characters 22-30:
+Warning: the token FRWclass is unused.
+File "JSParse.mly", line 88, characters 22-30:
+Warning: the token FRWconst is unused.
+File "JSParse.mly", line 89, characters 22-33:
+Warning: the token FRWdebugger is unused.
+File "JSParse.mly", line 90, characters 22-29:
+Warning: the token FRWenum is unused.
+File "JSParse.mly", line 91, characters 22-31:
+Warning: the token FRWexport is unused.
+File "JSParse.mly", line 92, characters 22-32:
+Warning: the token FRWextends is unused.
+File "JSParse.mly", line 93, characters 22-30:
+Warning: the token FRWfinal is unused.
+File "JSParse.mly", line 94, characters 22-30:
+Warning: the token FRWfloat is unused.
+File "JSParse.mly", line 95, characters 22-29:
+Warning: the token FRWgoto is unused.
+File "JSParse.mly", line 96, characters 22-35:
+Warning: the token FRWimplements is unused.
+File "JSParse.mly", line 97, characters 22-28:
+Warning: the token FRWint is unused.
+File "JSParse.mly", line 98, characters 22-34:
+Warning: the token FRWinterface is unused.
+File "JSParse.mly", line 99, characters 22-29:
+Warning: the token FRWlong is unused.
+File "JSParse.mly", line 100, characters 22-31:
+Warning: the token FRWnative is unused.
+File "JSParse.mly", line 101, characters 22-32:
+Warning: the token FRWpackage is unused.
+File "JSParse.mly", line 102, characters 22-32:
+Warning: the token FRWprivate is unused.
+File "JSParse.mly", line 103, characters 22-34:
+Warning: the token FRWprotected is unused.
+File "JSParse.mly", line 104, characters 22-30:
+Warning: the token FRWshort is unused.
+File "JSParse.mly", line 105, characters 22-31:
+Warning: the token FRWstatic is unused.
+File "JSParse.mly", line 106, characters 22-30:
+Warning: the token FRWsuper is unused.
+File "JSParse.mly", line 107, characters 22-37:
+Warning: the token FRWsynchronized is unused.
+File "JSParse.mly", line 108, characters 22-31:
+Warning: the token FRWthrows is unused.
+File "JSParse.mly", line 109, characters 22-34:
+Warning: the token FRWtransient is unused.
+File "JSParse.mly", line 110, characters 22-33:
+Warning: the token FRWvolatile is unused.
+File "JSParse.mly", line 47, characters 31-40:
+Warning: the token LDcomment is unused.
+File "JSParse.mly", line 49, characters 22-32:
+Warning: the token LInitBegin is unused.
+File "JSParse.mly", line 50, characters 22-30:
+Warning: the token LInitEnd is unused.
+File "JSParse.mly", line 35, characters 29-34:
+Warning: the token Lchar is unused.
+File "JSParse.mly", line 46, characters 31-39:
+Warning: the token Lcomment is unused.
+File "JSParse.mly", line 45, characters 22-38:
+Warning: the token Lline_terminator is unused.
+File "JSParse.mly", line 44, characters 22-33:
+Warning: the token Lwhitespace is unused.
+Warning: one state has shift/reduce conflicts.
+Warning: one shift/reduce conflict was arbitrarily resolved.

bench/good/K3Parser.exp

+File "K3Parser.mly", line 128, characters 12-21:
+Warning: the token COLONGETS is unused.
+File "K3Parser.mly", line 146, characters 7-13:
+Warning: the token EFFECT is unused.
+File "K3Parser.mly", line 106, characters 7-10:
+Warning: the token EOF is unused.
+File "K3Parser.mly", line 115, characters 42-46:
+Warning: the token HASH is unused.
+File "K3Parser.mly", line 121, characters 17-24:
+Warning: the token LRARROW is unused.
+File "K3Parser.mly", line 146, characters 14-22:
+Warning: the token PARALLEL is unused.
+File "K3Parser.mly", line 104, characters 7-12:
+Warning: the token RANGE is unused.
+File "K3Parser.mly", line 134, characters 12-16:
+Warning: the token RANK is unused.
+File "K3Parser.mly", line 97, characters 20-23:
+Warning: the token TOP is unused.
+File "K3Parser.mly", line 733, characters 0-15:
+Warning: symbol identifier_list is unreachable from any of the start symbol(s).
+File "K3Parser.mly", line 728, characters 0-12:
+Warning: symbol integer_list is unreachable from any of the start symbol(s).
+File "K3Parser.mly", line 177, characters 0-5:
+Warning: the precedence level assigned to ANNOTATE is never useful.
+File "K3Parser.mly", line 165, characters 0-6:
+Warning: the precedence level assigned to CASE is never useful.
+File "K3Parser.mly", line 163, characters 0-6:
+Warning: the precedence level assigned to IF is never useful.
+File "K3Parser.mly", line 161, characters 0-6:
+Warning: the precedence level assigned to LRARROW is never useful.
+File "K3Parser.mly", line 165, characters 0-6:
+Warning: the precedence level assigned to OF is never useful.
+File "K3Parser.mly", line 163, characters 0-6:
+Warning: the precedence level assigned to THEN is never useful.
+File "K3Parser.mly", line 183, characters 0-9:
+Warning: the precedence level assigned to UMINUS is never useful.
+File "K3Parser.mly", line 329, characters 47-53:
+Warning: this %prec declaration is never useful.
+Warning: 109 states have shift/reduce conflicts.
+Warning: 3 states have reduce/reduce conflicts.
+Warning: 576 shift/reduce conflicts were arbitrarily resolved.
+Warning: 142 reduce/reduce conflicts were arbitrarily resolved.
+Warning: 266 states have an end-of-stream conflict.
+File "K3Parser.mly", line 399, characters 0-4:
+Warning: symbol expr is never accepted.
+File "K3Parser.mly", line 760, characters 6-52:
+Warning: production expression_test -> expression_test_list is never reduced.
+File "K3Parser.mly", line 755, characters 6-58:
+Warning: production expression_test_list -> expression_test_list SEMICOLON expression_test_list is never reduced.
+File "K3Parser.mly", line 344, characters 6-42:
+Warning: production fn_type_expr_list -> type_expr RARROW fn_type_expr_list is never reduced.
+File "K3Parser.mly", line 763, characters 6-57:
+Warning: production named_expr_list -> anno_expr GETS check_expr is never reduced.
+Warning: in total, 5 productions are never reduced.

bench/good/albatross.exp

+File "albatross.mly", line 129, characters 7-10:
+Warning: the token EOF is unused.
+File "albatross.mly", line 135, characters 7-19:
+Warning: the token HIGHEST_PREC is unused.
+File "albatross.mly", line 93, characters 7-16:
+Warning: the token KWCURRENT is unused.
+File "albatross.mly", line 93, characters 17-26:
+Warning: the token KWCurrent is unused.
+File "albatross.mly", line 94, characters 7-13:
+Warning: the token KWNONE is unused.
+File "albatross.mly", line 95, characters 7-18:
+Warning: the token KWPrecursor is unused.
+File "albatross.mly", line 95, characters 19-28:
+Warning: the token KWProcess is unused.
+File "albatross.mly", line 98, characters 60-68:
+Warning: the token KWassert is unused.
+File "albatross.mly", line 99, characters 34-41:
+Warning: the token KWcheck is unused.
+File "albatross.mly", line 102, characters 19-28:
+Warning: the token KWfeature is unused.
+File "albatross.mly", line 102, characters 34-40:
+Warning: the token KWfrom is unused.
+File "albatross.mly", line 104, characters 34-42:
+Warning: the token KWimport is unused.
+File "albatross.mly", line 105, characters 34-45:
+Warning: the token KWinvariant is unused.
+File "albatross.mly", line 110, characters 7-17:
+Warning: the token KWredefine is unused.
+File "albatross.mly", line 113, characters 7-17:
+Warning: the token KWundefine is unused.
+File "albatross.mly", line 114, characters 7-16:
+Warning: the token KWvariant is unused.
+File "albatross.mly", line 115, characters 7-14:
+Warning: the token KWwhile is unused.
+File "albatross.mly", line 155, characters 7-13:
+Warning: the token UMINUS is unused.
+File "albatross.mly", line 166, characters 9-18:
+Warning: the precedence level assigned to ASSIGN is never useful.
+File "albatross.mly", line 174, characters 9-18:
+Warning: the precedence level assigned to EQV is never useful.
+File "albatross.mly", line 187, characters 9-18:
+Warning: the precedence level assigned to HIGHEST_PREC is never useful.
+File "albatross.mly", line 165, characters 9-18:
+Warning: the precedence level assigned to KWghost is never useful.
+File "albatross.mly", line 185, characters 9-18:
+Warning: the precedence level assigned to LBRACE is never useful.
+File "albatross.mly", line 174, characters 9-18:
+Warning: the precedence level assigned to NEQV is never useful.
+File "albatross.mly", line 181, characters 9-14:
+Warning: the precedence level assigned to OPERATOR is never useful.
+File "albatross.mly", line 183, characters 9-18:
+Warning: the precedence level assigned to QMARK is never useful.
+File "albatross.mly", line 182, characters 9-15:
+Warning: the precedence level assigned to ROPERATOR is never useful.
+File "albatross.mly", line 186, characters 9-18:
+Warning: the precedence level assigned to UMINUS is never useful.
+File "albatross.mly", line 440, characters 23-34:
+Warning: this %prec declaration is never useful.
+Warning: 117 states have an end-of-stream conflict.
+File "albatross.mly", line 202, characters 2-26:
+Warning: production file -> use_block optsemi decls is never reduced.
+File "albatross.mly", line 203, characters 2-8:
+Warning: production file -> decls is never reduced.
+File "albatross.mly", line 217, characters 4-4:
+Warning: production use_block_opt -> is never reduced.
+Warning: in total, 3 productions are never reduced.

bench/good/compsyn.exp

+File "compsyn.mly", line 281, characters 7-16:
+Warning: the token CAPITAL_E is unused.
+File "compsyn.mly", line 203, characters 41-44:
+Warning: the token EOL is unused.
+File "compsyn.mly", line 282, characters 7-15:
+Warning: the token LITTLE_E is unused.
+File "compsyn.mly", line 276, characters 0-5:
+Warning: the precedence level assigned to BIT_NEG is never useful.
+File "compsyn.mly", line 276, characters 0-5:
+Warning: the precedence level assigned to LOGIC_NEG is never useful.
+File "compsyn.mly", line 276, characters 0-5:
+Warning: the precedence level assigned to RED_NAND is never useful.
+File "compsyn.mly", line 276, characters 0-5:
+Warning: the precedence level assigned to RED_NOR is never useful.
+File "compsyn.mly", line 278, characters 0-5:
+Warning: the precedence level assigned to UADD is never useful.
+File "compsyn.mly", line 278, characters 0-5:
+Warning: the precedence level assigned to UAND is never useful.
+File "compsyn.mly", line 278, characters 0-5:
+Warning: the precedence level assigned to UEQU is never useful.
+File "compsyn.mly", line 278, characters 0-5:
+Warning: the precedence level assigned to UOR is never useful.
+File "compsyn.mly", line 278, characters 0-5:
+Warning: the precedence level assigned to USUB is never useful.
+File "compsyn.mly", line 278, characters 0-5:
+Warning: the precedence level assigned to UXOR is never useful.
+File "compsyn.mly", line 1339, characters 21-25:
+Warning: this %prec declaration is never useful.
+File "compsyn.mly", line 1340, characters 21-25:
+Warning: this %prec declaration is never useful.
+File "compsyn.mly", line 1343, characters 26-30:
+Warning: this %prec declaration is never useful.
+File "compsyn.mly", line 1345, characters 24-27:
+Warning: this %prec declaration is never useful.
+File "compsyn.mly", line 1347, characters 25-29:
+Warning: this %prec declaration is never useful.
+File "compsyn.mly", line 1348, characters 25-29:
+Warning: this %prec declaration is never useful.
+Warning: 11 states have shift/reduce conflicts.
+Warning: one state has reduce/reduce conflicts.
+Warning: 38 shift/reduce conflicts were arbitrarily resolved.
+Warning: one reduce/reduce conflict was arbitrarily resolved.
+File "compsyn.mly", line 687, characters 3-3:
+Warning: production KEY_IF_LPAREN_expression_RPAREN_opt -> is never reduced.
+File "compsyn.mly", line 688, characters 3-38:
+Warning: production KEY_IF_LPAREN_expression_RPAREN_opt -> KEY_IF LPAREN expression RPAREN is never reduced.
+File "compsyn.mly", line 729, characters 1-13:
+Warning: production conditional_port_expression -> expression is never reduced.
+Warning: in total, 3 productions are never reduced.

bench/good/docOckXmlParser.exp

+Warning: you are using the standard library and/or the %inline keyword. We
+recommend switching on --infer in order to avoid obscure type error messages.

bench/good/execparser.exp

+File "execparser.mly", line 89, characters 16-21:
+Warning: the token CHECK is unused.
+File "execparser.mly", line 88, characters 16-20:
+Warning: the token EDGE is unused.
+File "execparser.mly", line 109, characters 19-22:
+Warning: the token FIG is unused.
+File "execparser.mly", line 109, characters 26-30:
+Warning: the token INIT is unused.
+File "execparser.mly", line 109, characters 8-12:
+Warning: the token MODE is unused.
+File "execparser.mly", line 109, characters 13-18:
+Warning: the token NEATO is unused.
+File "execparser.mly", line 131, characters 13-16:
+Warning: the token NUM is unused.
+File "execparser.mly", line 109, characters 31-34:
+Warning: the token PAR is unused.
+File "execparser.mly", line 109, characters 23-25:
+Warning: the token PS is unused.
+File "execparser.mly", line 109, characters 39-42:
+Warning: the token TXT is unused.
+File "execparser.mly", line 115, characters 8-18:
+Warning: the token WHITESPACE is unused.
+Warning: one state has shift/reduce conflicts.
+Warning: one shift/reduce conflict was arbitrarily resolved.
+Warning: 83 states have an end-of-stream conflict.
+File "execparser.mly", line 166, characters 4-34:
+Warning: production instructions -> instruction is never reduced.
+File "execparser.mly", line 167, characters 4-34:
+Warning: production instructions -> instruction DOT is never reduced.
+Warning: in total, 2 productions are never reduced.