Profiling results ----------------- Total cpu time observed: 21554ms (out of 21840ms) Number of samples taken: 69 (once every 312ms) ================================================================================ Caller Idx Total Self Name+src Local% ms(pct) ms(pct) Callee ================================================================================ ??? [59] 100.0% [1] 21554(100.0%) 0(0.0%) run-improve47 ...rface-bugs/src/mainloop.rkt:345:0 simplify! [6] 86.8% for-loop [7] 7.4% prepare-points-intervals [8] 5.8% -------------------------------------------------------------------------------- ??? [59] 100.0% [2] 21554(100.0%) 0(0.0%) profile-thunk16 ...e/pkgs/profile-lib/main.rkt:9:0 run [5] 100.0% -------------------------------------------------------------------------------- matcher [64] 100.0% [3] 968(4.5%) 0(0.0%) ??? ...-interface-bugs/src/core/matcher.rkt:128:11 for-loop [9] 100.0% -------------------------------------------------------------------------------- ??? [49] 100.0% [4] 300(1.4%) 0(0.0%) approximate9 ...face-bugs/src/core/taylor.rkt:12:0 loop [10] 100.0% -------------------------------------------------------------------------------- profile-thunk16 [2] 100.0% [5] 21554(100.0%) 0(0.0%) run ...et-7.2/share/pkgs/profile-lib/main.rkt:39:2 ??? [59] 100.0% -------------------------------------------------------------------------------- run-improve47 [1] 100.0% [6] 18708(86.8%) 0(0.0%) simplify! ...interface-bugs/src/mainloop.rkt:223:0 ??? [11] 100.0% -------------------------------------------------------------------------------- run-improve47 [1] 100.0% [7] 1590(7.4%) 0(0.0%) for-loop ...-interface-bugs/src/mainloop.rkt:364:4 run-iter! [12] 100.0% -------------------------------------------------------------------------------- run-improve47 [1] 100.0% [8] 1256(5.8%) 0(0.0%) prepare-points-intervals ...s/src/points.rkt:121:0 loop [13] 100.0% -------------------------------------------------------------------------------- ??? [3] 100.0% [9] 968(4.5%) 0(0.0%) for-loop ...rface-bugs/src/core/matcher.rkt:130:15 matcher [64] 100.0% -------------------------------------------------------------------------------- approximate9 [4] 100.0% [10] 300(1.4%) 0(0.0%) loop ...ix-interface-bugs/src/core/taylor.rkt:87:4 hash-ref! [30] 100.0% -------------------------------------------------------------------------------- simplify! [6] 100.0% [11] 18708(86.8%) 0(0.0%) ??? ...x-interface-bugs/src/core/simplify.rkt:26:0 for-loop [14] 98.4% loop [22] 1.6% -------------------------------------------------------------------------------- for-loop [7] 100.0% [12] 1590(7.4%) 0(0.0%) run-iter! ...interface-bugs/src/mainloop.rkt:326:0 gen-rewrites! [16] 60.9% localize! [17] 20.3% gen-series! [18] 18.9% -------------------------------------------------------------------------------- prepare-points-intervals [8] 100.0% [13] 1256(5.8%) 0(0.0%) loop ...ie/fix-interface-bugs/src/points.rkt:134:4 loop [15] 100.0% -------------------------------------------------------------------------------- ??? [11] 100.0% [14] 18414(85.4%) 0(0.0%) for-loop ...erface-bugs/src/core/simplify.rkt:35:2 one-iter [19] 98.4% loop [22] 1.6% -------------------------------------------------------------------------------- loop [13] 100.0% [15] 1256(5.8%) 0(0.0%) loop ...bie/fix-interface-bugs/src/points.rkt:80:2 ??? [20] 100.0% -------------------------------------------------------------------------------- run-iter! [12] 100.0% [16] 968(4.5%) 0(0.0%) gen-rewrites! ...rface-bugs/src/mainloop.rkt:182:0 for-loop [21] 100.0% -------------------------------------------------------------------------------- run-iter! [12] 100.0% [17] 322(1.5%) 0(0.0%) localize! ...interface-bugs/src/mainloop.rkt:126:0 localize-error [23] 100.0% -------------------------------------------------------------------------------- run-iter! [12] 100.0% [18] 300(1.4%) 0(0.0%) gen-series! ...terface-bugs/src/mainloop.rkt:159:0 for-loop [24] 100.0% -------------------------------------------------------------------------------- for-loop [14] 100.0% [19] 18116(84.0%) 0(0.0%) one-iter ...erface-bugs/src/core/simplify.rkt:72:0 find-matches [25] 54.7% for-loop [26] 37.0% for-loop [29] 5.0% for-loop [31] 3.3% -------------------------------------------------------------------------------- loop [15] 100.0% [20] 1256(5.8%) 0(0.0%) ??? ...e/fix-interface-bugs/src/programs.rkt:115:2 ??? [27] 100.0% -------------------------------------------------------------------------------- gen-rewrites! [16] 100.0% [21] 968(4.5%) 0(0.0%) for-loop ...interface-bugs/src/mainloop.rkt:190:11 rewrite-expression-head20 [28] 100.0% -------------------------------------------------------------------------------- ??? [11] 49.7% for-loop [14] 50.3% [22] 592(2.7%) 0(0.0%) loop ...nterface-bugs/src/core/extraction.rkt:25:2 debug5 [33] 50.3% for-loop [34] 49.7% -------------------------------------------------------------------------------- localize! [17] 100.0% [23] 322(1.5%) 0(0.0%) localize-error ...-bugs/src/core/localize.rkt:64:0 hash-ref! [30] 100.0% -------------------------------------------------------------------------------- gen-series! [18] 100.0% [24] 300(1.4%) 0(0.0%) for-loop ...-interface-bugs/src/mainloop.rkt:166:7 taylor-alt [32] 100.0% -------------------------------------------------------------------------------- one-iter [19] 100.0% [25] 9918(46.0%) 0(0.0%) find-matches ...ce-bugs/src/core/simplify.rkt:62:0 for-loop [35] 100.0% -------------------------------------------------------------------------------- one-iter [19] 100.0% [26] 6696(31.1%) 0(0.0%) for-loop ...erface-bugs/src/core/simplify.rkt:74:2 for-loop [36] 100.0% -------------------------------------------------------------------------------- ??? [20] 100.0% [27] 1256(5.8%) 0(0.0%) ??? ...t-7.2/collects/racket/private/kw.rkt:594:14 ??? [49] 51.8% ??? [39] 48.2% -------------------------------------------------------------------------------- for-loop [21] 100.0% [28] 968(4.5%) 0(0.0%) rewrite-expression-head20 ...core/matcher.rkt:86:0 rewriter [37] 100.0% -------------------------------------------------------------------------------- one-iter [19] 100.0% [29] 908(4.2%) 0(0.0%) for-loop ...erface-bugs/src/core/simplify.rkt:81:2 set-precompute! [38] 100.0% -------------------------------------------------------------------------------- ??? [49] 24.1% loop [10] 24.1% map [53] 25.9% localize-error [23] 25.9% [30] 622(2.9%) 0(0.0%) hash-ref! .../racket/private/more-scheme.rkt:376:2 parse-loop30 [40] 51.8% ??? [42] 24.1% taylor [41] 24.1% -------------------------------------------------------------------------------- one-iter [19] 100.0% [31] 594(2.8%) 0(0.0%) for-loop ...erface-bugs/src/core/simplify.rkt:84:2 update-leader! [75] 100.0% -------------------------------------------------------------------------------- for-loop [24] 100.0% [32] 300(1.4%) 0(0.0%) taylor-alt ...nterface-bugs/src/mainloop.rkt:145:0 for-loop [43] 100.0% -------------------------------------------------------------------------------- loop [22] 100.0% [33] 298(1.4%) 298(1.4%) debug5 ...e/fix-interface-bugs/src/debug.rkt:102:0 -------------------------------------------------------------------------------- loop [22] 100.0% [34] 294(1.4%) 0(0.0%) for-loop ...face-bugs/src/core/extraction.rkt:29:4 for-loop [44] 100.0% -------------------------------------------------------------------------------- for-loop [35] 48.5% find-matches [25] 51.5% [35] 9918(46.0%) 300(1.4%) for-loop ...erface-bugs/src/core/simplify.rkt:64:8 for-loop [35] 48.5% match-e [45] 48.5% -------------------------------------------------------------------------------- for-loop [26] 100.0% [36] 6696(31.1%) 0(0.0%) for-loop ...erface-bugs/src/core/simplify.rkt:77:4 merge-egraph-nodes! [61] 49.6% dedup-children! [46] 27.8% mk-enode-rec! [47] 18.0% pattern-substitute [56] 4.5% -------------------------------------------------------------------------------- rewrite-expression-head20 [28] 33.5% matcher [64] 66.5% [37] 968(4.5%) 0(0.0%) rewriter ...terface-bugs/src/core/matcher.rkt:88:2 for-loop [48] 83.5% *rules* [51] 16.5% -------------------------------------------------------------------------------- for-loop [29] 100.0% [38] 908(4.2%) 0(0.0%) set-precompute! ...bugs/src/core/simplify.rkt:88:0 for-loop [50] 100.0% -------------------------------------------------------------------------------- ??? [27] 100.0% [39] 606(2.8%) 0(0.0%) ??? ...tract/private/arrow-higher-order.rkt:364:33 ival-sub [54] 50.2% ival-div [55] 49.8% -------------------------------------------------------------------------------- hash-ref! [30] 100.0% [40] 322(1.5%) 0(0.0%) parse-loop30 ...s/racket/match/compiler.rkt:418:15 map [53] 50.0% for-loop [52] 50.0% -------------------------------------------------------------------------------- hash-ref! [30] 20.0% taylor [41] 80.0% [41] 300(1.4%) 0(0.0%) taylor ...interface-bugs/src/core/taylor.rkt:170:0 taylor [41] 80.0% taylor-log [57] 20.0% -------------------------------------------------------------------------------- hash-ref! [30] 100.0% [42] 300(1.4%) 0(0.0%) ??? ...ix-interface-bugs/src/core/taylor.rkt:68:15 ??? [49] 100.0% -------------------------------------------------------------------------------- taylor-alt [32] 100.0% [43] 300(1.4%) 0(0.0%) for-loop ...-interface-bugs/src/mainloop.rkt:151:6 ??? [49] 100.0% -------------------------------------------------------------------------------- for-loop [34] 100.0% [44] 294(1.4%) 0(0.0%) for-loop ...ace-bugs/src/core/extraction.rkt:37:16 for-loop [58] 100.0% -------------------------------------------------------------------------------- for-loop [74] 36.4% for-loop [35] 63.6% [45] 9618(44.6%) 1916(8.9%) match-e ...interface-bugs/src/core/ematch.rkt:39:0 for-loop [60] 79.7% variable? [63] 5.0% ??? [79] 1.1% -------------------------------------------------------------------------------- for-loop [36] 100.0% [46] 1864(8.6%) 0(0.0%) dedup-children! ...e-bugs/src/core/enode.rkt:202:0 loop [62] 84.4% loop [73] 15.6% -------------------------------------------------------------------------------- loop [76] 12.0% for-loop [36] 88.0% [47] 1208(5.6%) 0(0.0%) mk-enode-rec! ...ce-bugs/src/core/egraph.rkt:117:0 new-enode [68] 49.8% for-loop [67] 38.2% loop [76] 12.0% -------------------------------------------------------------------------------- rewriter [37] 100.0% [48] 968(4.5%) 0(0.0%) for-loop ...terface-bugs/src/core/matcher.rkt:90:4 matcher [64] 100.0% -------------------------------------------------------------------------------- ??? [42] 10.5% location-do [72] 10.5% for-loop [43] 10.5% ??? [27] 68.4% [49] 950(4.4%) 0(0.0%) ??? ...tract/private/arrow-higher-order.rkt:360:33 ival-pow [65] 68.4% location-do [72] 10.5% approximate9 [4] 10.5% hash-ref! [30] 10.5% -------------------------------------------------------------------------------- set-precompute! [38] 100.0% [50] 908(4.2%) 294(1.4%) for-loop ...erface-bugs/src/core/simplify.rkt:90:2 merge-egraph-nodes! [61] 34.4% ??? [59] 33.3% -------------------------------------------------------------------------------- rewriter [37] 100.0% [51] 640(3.0%) 0(0.0%) *rules* ...terface-bugs/src/syntax/rules.rkt:666:0 for-loop [66] 100.0% -------------------------------------------------------------------------------- parse-loop30 [40] 100.0% [52] 322(1.5%) 0(0.0%) for-loop ...rface-bugs/src/core/localize.rkt:51:21 for-loop [69] 100.0% -------------------------------------------------------------------------------- parse-loop30 [40] 100.0% [53] 322(1.5%) 0(0.0%) map ...t-7.2/collects/racket/private/map.rkt:35:13 hash-ref! [30] 100.0% -------------------------------------------------------------------------------- ??? [39] 100.0% [54] 304(1.4%) 0(0.0%) ival-sub ...terface-bugs/src/biginterval.rkt:100:0 bfsub [70] 100.0% -------------------------------------------------------------------------------- ??? [39] 100.0% [55] 302(1.4%) 302(1.4%) ival-div ...terface-bugs/src/biginterval.rkt:148:0 -------------------------------------------------------------------------------- for-loop [36] 100.0% [56] 300(1.4%) 300(1.4%) pattern-substitute ...gs/src/core/matcher.rkt:46:0 -------------------------------------------------------------------------------- taylor [41] 100.0% [57] 300(1.4%) 0(0.0%) taylor-log ...rface-bugs/src/core/taylor.rkt:503:0 simplify [71] 100.0% -------------------------------------------------------------------------------- for-loop [44] 100.0% [58] 294(1.4%) 294(1.4%) for-loop ...ace-bugs/src/core/extraction.rkt:41:23 -------------------------------------------------------------------------------- for-loop [50] 0.5% run [5] 49.8% [59] 21554(100.0%) 0(0.0%) ??? ...lects/racket/private/more-scheme.rkt:261:28 profile-thunk16 [2] 49.8% run-improve47 [1] 49.8% eval-const-expr [91] 0.5% -------------------------------------------------------------------------------- match-e [45] 100.0% [60] 8698(40.4%) 2818(13.1%) for-loop ...terface-bugs/src/core/ematch.rkt:52:11 for-loop [74] 52.2% procedure-reduce-keyword-arity-mask [78] 9.1% loop [76] 7.6% cartesian-product [82] 4.3% foldr [83] 1.9% do-curry [80] 1.9% step [86] 1.7% -------------------------------------------------------------------------------- for-loop [81] 6.7% for-loop [50] 8.6% merge-egraph-nodes! [61] 12.1% for-loop [36] 72.6% [61] 3636(16.9%) 0(0.0%) merge-egraph-nodes! ...s/src/core/egraph.rkt:145:0 update-leader! [75] 46.2% loop! [90] 27.0% merge-egraph-nodes! [61] 12.1% enode-merge! [87] 8.0% for-loop [81] 6.7% -------------------------------------------------------------------------------- dedup-children! [46] 16.6% loop [62] 83.4% [62] 1574(7.3%) 0(0.0%) loop ...racket-7.2/collects/racket/list.rkt:417:34 loop [62] 83.4% loop [77] 16.6% -------------------------------------------------------------------------------- match-e [45] 100.0% [63] 1306(6.1%) 0(0.0%) variable? ...face-bugs/src/syntax/syntax.rkt:729:0 ??? [79] 72.6% value? [99] 27.4% -------------------------------------------------------------------------------- for-loop [9] 50.0% for-loop [48] 50.0% [64] 968(4.5%) 328(1.5%) matcher ...terface-bugs/src/core/matcher.rkt:116:2 ??? [3] 50.0% rewriter [37] 41.5% -------------------------------------------------------------------------------- ??? [49] 100.0% [65] 650(3.0%) 650(3.0%) ival-pow ...terface-bugs/src/biginterval.rkt:216:0 -------------------------------------------------------------------------------- *rules* [51] 100.0% [66] 640(3.0%) 320(1.5%) for-loop ...fix-interface-bugs/src/common.rkt:74:9 do-curry [80] 50.0% -------------------------------------------------------------------------------- mk-enode-rec! [47] 100.0% [67] 606(2.8%) 606(2.8%) for-loop ...erface-bugs/src/core/egraph.rkt:109:10 -------------------------------------------------------------------------------- mk-enode-rec! [47] 100.0% [68] 602(2.8%) 0(0.0%) new-enode ...terface-bugs/src/core/enode.rkt:101:0 set [98] 51.5% type-of-enode-expr [88] 48.5% -------------------------------------------------------------------------------- for-loop [52] 100.0% [69] 322(1.5%) 322(1.5%) for-loop ...rface-bugs/src/core/localize.rkt:52:23 -------------------------------------------------------------------------------- ival-sub [54] 100.0% [70] 304(1.4%) 0(0.0%) bfsub ...-lib/math/private/bigfloat/mpfr.rkt:821:4 ??? [84] 100.0% -------------------------------------------------------------------------------- taylor-log [57] 100.0% [71] 300(1.4%) 0(0.0%) simplify ...nterface-bugs/src/core/reduce.rkt:16:0 f66 [85] 100.0% -------------------------------------------------------------------------------- ??? [49] 100.0% [72] 300(1.4%) 0(0.0%) location-do ...nterface-bugs/src/programs.rkt:64:0 ??? [49] 100.0% -------------------------------------------------------------------------------- dedup-children! [46] 4.2% loop [73] 95.8% [73] 290(1.3%) 290(1.3%) loop ...racket-7.2/collects/racket/list.rkt:434:17 loop [73] 95.8% -------------------------------------------------------------------------------- for-loop [60] 100.0% [74] 6454(29.9%) 0(0.0%) for-loop ...terface-bugs/src/core/ematch.rkt:58:37 match-e [45] 100.0% -------------------------------------------------------------------------------- for-loop [31] 21.5% merge-egraph-nodes! [61] 78.5% [75] 2760(12.8%) 0(0.0%) update-leader! ...e-bugs/src/core/egraph.rkt:213:0 for-loop [89] 88.3% custom-set-union! [94] 11.7% -------------------------------------------------------------------------------- loop! [90] 2.6% for-loop [60] 6.5% mk-enode-rec! [47] 15.8% loop [76] 75.2% [76] 1838(8.5%) 0(0.0%) loop ...-7.2/collects/racket/private/map.rkt:40:19 loop [76] 75.2% mk-enode-rec! [47] 15.8% ??? [93] 5.9% loop! [90] 2.6% foldl [92] 0.5% -------------------------------------------------------------------------------- loop [62] 100.0% [77] 1574(7.3%) 1574(7.3%) loop (unknown source) -------------------------------------------------------------------------------- for-loop [60] 100.0% [78] 1282(5.9%) 1282(5.9%) procedure-reduce-keyword-arity-mask ....rkt:1562:4 -------------------------------------------------------------------------------- match-e [45] 25.5% variable? [63] 74.5% [79] 1272(5.9%) 1272(5.9%) ??? ...contract/private/arrow-val-first.rkt:390:18 -------------------------------------------------------------------------------- for-loop [66] 49.7% for-loop [60] 50.3% [80] 644(3.0%) 644(3.0%) do-curry ...-7.2/collects/racket/function.rkt:71:2 -------------------------------------------------------------------------------- merge-egraph-nodes! [61] 100.0% [81] 616(2.9%) 0(0.0%) for-loop ...terface-bugs/src/core/egraph.rkt:199:4 merge-egraph-nodes! [61] 100.0% -------------------------------------------------------------------------------- for-loop [60] 100.0% [82] 370(1.7%) 370(1.7%) cartesian-product ...ollects/racket/list.rkt:822:0 -------------------------------------------------------------------------------- for-loop [60] 100.0% [83] 324(1.5%) 324(1.5%) foldr ....2/collects/racket/private/list.rkt:242:4 -------------------------------------------------------------------------------- bfsub [70] 100.0% [84] 304(1.4%) 304(1.4%) ??? /opt/racket-7.2/collects/ffi/unsafe.rkt:905:4 -------------------------------------------------------------------------------- simplify [71] 100.0% [85] 300(1.4%) 0(0.0%) f66 ...2/collects/racket/match/compiler.rkt:507:40 eval-const-expr [91] 100.0% -------------------------------------------------------------------------------- for-loop [60] 100.0% [86] 296(1.4%) 296(1.4%) step ...ket-7.2/collects/racket/function.rkt:145:9 -------------------------------------------------------------------------------- merge-egraph-nodes! [61] 100.0% [87] 292(1.4%) 0(0.0%) enode-merge! ...face-bugs/src/core/enode.rkt:131:0 adopt-enode! [95] 100.0% -------------------------------------------------------------------------------- new-enode [68] 100.0% [88] 292(1.4%) 0(0.0%) type-of-enode-expr ...bugs/src/core/enode.rkt:66:0 constant? [96] 100.0% -------------------------------------------------------------------------------- update-leader! [75] 100.0% [89] 2438(11.3%) 0(0.0%) for-loop ...terface-bugs/src/core/egraph.rkt:218:6 hash-update! [102] 50.5% for-loop [97] 49.5% -------------------------------------------------------------------------------- loop [76] 37.8% merge-egraph-nodes! [61] 62.2% [90] 1178(5.5%) 0(0.0%) loop! ...x-interface-bugs/src/core/enode.rkt:194:2 loop [76] 37.8% custom-set-union [101] 37.2% set [98] 25.0% -------------------------------------------------------------------------------- f66 [85] 49.8% ??? [59] 50.2% [91] 602(2.8%) 0(0.0%) eval-const-expr ...ace-bugs/src/programs.rkt:118:0 eval-prog [100] 100.0% -------------------------------------------------------------------------------- loop [76] 100.0% [92] 332(1.5%) 332(1.5%) foldl ....2/collects/racket/private/list.rkt:229:4 -------------------------------------------------------------------------------- loop [76] 100.0% [93] 326(1.5%) 326(1.5%) ??? ...ket-7.2/collects/racket/function.rkt:138:13 -------------------------------------------------------------------------------- update-leader! [75] 100.0% [94] 322(1.5%) 322(1.5%) custom-set-union! ...t/private/set-types.rkt:245:0 -------------------------------------------------------------------------------- enode-merge! [87] 100.0% [95] 292(1.4%) 292(1.4%) adopt-enode! ...face-bugs/src/core/enode.rkt:109:0 -------------------------------------------------------------------------------- type-of-enode-expr [88] 100.0% [96] 292(1.4%) 0(0.0%) constant? ...face-bugs/src/syntax/syntax.rkt:726:0 value? [99] 100.0% -------------------------------------------------------------------------------- for-loop [89] 100.0% [97] 1208(5.6%) 0(0.0%) for-loop ...terface-bugs/src/core/egraph.rkt:219:8 hash-update! [102] 100.0% -------------------------------------------------------------------------------- new-enode [68] 34.4% loop! [90] 65.6% [98] 900(4.2%) 900(4.2%) set ...collects/racket/private/set-types.rkt:981:0 -------------------------------------------------------------------------------- constant? [96] 44.9% variable? [63] 55.1% [99] 650(3.0%) 650(3.0%) value? ...interface-bugs/src/syntax/types.rkt:18:0 -------------------------------------------------------------------------------- eval-const-expr [91] 100.0% [100] 602(2.8%) 0(0.0%) eval-prog ...-interface-bugs/src/programs.rkt:83:0 inductor [103] 100.0% -------------------------------------------------------------------------------- loop! [90] 100.0% [101] 588(2.7%) 288(1.3%) custom-set-union ...et/private/set-types.rkt:168:0 for-loop [104] 51.0% -------------------------------------------------------------------------------- for-loop [97] 49.5% for-loop [89] 50.5% [102] 2438(11.3%) 0(0.0%) hash-update! ...cket/private/more-scheme.rkt:365:4 ??? [105] 100.0% -------------------------------------------------------------------------------- eval-prog [100] 100.0% [103] 602(2.8%) 0(0.0%) inductor ...-interface-bugs/src/programs.rkt:104:4 table-ref [106] 100.0% -------------------------------------------------------------------------------- custom-set-union [101] 100.0% [104] 300(1.4%) 300(1.4%) for-loop ...cts/racket/private/set-types.rkt:174:3 -------------------------------------------------------------------------------- hash-update! [102] 100.0% [105] 2438(11.3%) 0(0.0%) ??? ...x-interface-bugs/src/core/egraph.rkt:221:24 for-loop [107] 100.0% -------------------------------------------------------------------------------- inductor [103] 100.0% [106] 602(2.8%) 300(1.4%) table-ref ...ix-interface-bugs/src/common.rkt:45:0 dict? [108] 50.2% -------------------------------------------------------------------------------- ??? [105] 100.0% [107] 2438(11.3%) 2438(11.3%) for-loop ...erface-bugs/src/core/egraph.rkt:222:26 -------------------------------------------------------------------------------- table-ref [106] 100.0% [108] 302(1.4%) 302(1.4%) dict? ...ollects/racket/private/generic.rkt:146:11 --------------------------------------------------------------------------------