Gambit-list Février 2008

gambit-list@iro.umontreal.ca

29 participants
37 discussions

Segmentation fault from simple (infinite) loop
by Ryan Mulligan 11 Fév '08

11 Fév '08

rmulliga@rtmlap ~/gambc-v4_2_1> bin/gsi-script Gambit v4.2.1 > (define (loopy x) (println x)(loopy (+ 1 x))) > (define (loopy x) (print x ) (print " ")(loopy (+ 1 x))) > (loopy 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978fish: Job 1, "bin/gsi-script " terminated by signal SIGSEGV (Address boundary error) Why am I getting a seg fault? rm

5 9

current tree doesn't work on MacOS X 10.4.11 on PPC-32
by Bradley Lucier 11 Fév '08

11 Fév '08

Marc: I just built the current tree on MacOS X 10.4.11, using the default apple gcc-4.0.1, with the following commands: 91 21:08 make mostlyclean 92 21:09 ./configure CC='gcc -g' --enable-single-host 93 21:10 make Then, under gdb, it crashed under startup (gdb) run Starting program: /Users/lucier/programs/gambc-v4_2_1/gsc/gsc Reading symbols for shared libraries . done Program received signal EXC_BAD_ACCESS, Could not access memory. Reason: KERN_PROTECTION_FAILURE at address: 0x00000051 ___H__20___kernel (___ps=0x43ee80) at _kernel.c:6533 6533 ___SET_R2(___CDR(___R2)) (gdb) where #0 ___H__20___kernel (___ps=0x43ee80) at _kernel.c:6533 #1 0x000e5294 in ___call (nargs=4451968, proc=-944787260, stack_marker=13632365) at setup.c:1820 #2 0x000e6264 in ___setup (setup_params=0xc7afb0c4) at setup.c:2943 #3 0x0023d7d4 in ___main (linker=0x5d90 <____20___gsc__>) at main.c:552 #4 0x000e6408 in ___main_char (argc=4451968, argv=0xbffff248, linker=0x5d90 <____20___gsc__>, script_line=0x0) at os_base.c:337 #5 0x00005dd4 in main (argc=4451968, argv=0xc7afb0c4) at _gsc_.c:11955 (gdb) list 6528 ___END_ALLOC_STRUCTURE(5) 6529 ___SET_R1(___GET_STRUCTURE(5)) 6530 ___SET_R2(___CURRENTTHREAD) 6531 ___SET_R2(___UNCHECKEDSTRUCTUREREF(___R2,___FIX(20L),___SUB (4),___FAL)) 6532 ___SET_R2(___VECTORREF(___R2,___FIX(4L))) 6533 ___SET_R2(___CDR(___R2)) 6534 ___CHECK_HEAP(3,4096) 6535 ___DEF_SLBL(3,___L3__23__23_raise_2d_type_2d_exception) 6536 ___POLL(4) 6537 ___DEF_SLBL(4,___L4__23__23_raise_2d_type_2d_exception)

2 1

[ANN] Gambit-C v4.2.2 released
by gambit＠iro.umontreal.ca 11 Fév '08

11 Fév '08

1 0

[ANN] Gambit-C v4.2.1 released
by gambit＠iro.umontreal.ca 08 Fév '08

08 Fév '08

3 2

Please don't delete the .c file
by Bradley Lucier 06 Fév '08

06 Fév '08

Marc: I needed to debug a gsc-compiled file with gdb today, and it was fairly inconvenient that the .c file wasn't left around by compile- file in beta 21. I suggest that the .c file be left around for the various source tools that need it. Brad

3 10

Change G5 and x86_64 on Mac OS to use 64-bit words (tested on G5 only)
by Bradley Lucier 06 Fév '08

06 Fév '08

This allows the use of large vectors/f64vectors/etc. as well as making bignum arithmetic a lot faster (uses 32-bit words in places instead of 16-bit words). Brad # HG changeset patch # User lucier(a)descartes.math.purdue.edu # Date 1202334694 18000 # Node ID 2f7e30305256cc58ae265ed052a12cce8b3b8fb8 # Parent 024cde9a6dd6a8aa7a3b79440f0442aa422e3e44 Pre-built G5 and x86_64 versions now use 64-bit words by default. diff -r 024cde9a6dd6 -r 2f7e30305256 prebuilt/macosx/build --- a/prebuilt/macosx/build Tue Feb 05 18:00:19 2008 -0500 +++ b/prebuilt/macosx/build Wed Feb 06 16:51:34 2008 -0500 @@ -24,7 +24,7 @@ for VARIANT in intel32 intel64 G3 G4 G5 intel32) CONFIG_ARCH="-arch i686" CONFIG_HOST="--host=i386-apple-darwin9" ;; - intel64) CONFIG_ARCH="-arch x86_64" + intel64) CONFIG_ARCH="-arch x86_64 -m64" CONFIG_HOST="--host=i386-apple-darwin9" ;; G3) CONFIG_ARCH="-arch ppc750" @@ -33,7 +33,7 @@ for VARIANT in intel32 intel64 G3 G4 G5 G4) CONFIG_ARCH="-arch ppc7400" CONFIG_HOST="--host=powerpc-apple-darwin9" ;; - G5) CONFIG_ARCH="-arch ppc970" + G5) CONFIG_ARCH="-arch ppc970 -m64" CONFIG_HOST="--host=powerpc-apple-darwin9" ;; universal) CONFIG_ARCH="-arch i686 -arch ppc750"

2 1

Re: [gambit-list] Gambit and termite on an embedded system (Nintendo DS)?
by Raoul Duke 06 Fév '08

06 Fév '08

hi, I'm curious to know how folks have fared in attempting to get things onto sundry embedded systems. E.g there are inexpensive-but-limited things like the Parallax Propeller which would be possibly neat to program via something like Termite. thanks for any news.

6 12

c-interface: relaxing type checking on the scheme side
by James Long 05 Fév '08

05 Fév '08

Is there anyway to specify multiple tags for a type so that, for example, I could pass either a float or an int to a c function? C's basic type coercion, in my opinion, is not a bad thing and it helps code become less cluttered. Well, lets take a step back. I just realized I can't even successfully map any primitive type to a new type. For example: (c-declare #<<END int add(int a) { return a+5; } END ) (c-define-type num (type "int" #f)) (define add (c-lambda (num) int "add")) Compiling and calling `(add 5)` throws a type error for the argument (can't convert to C type). I thought the third parameter of the 'type' expression bypassed type checking. What am I doing wrong? Assuming I get that working, I could just bypass type checking altogether, but I don't want that. I was hoping to define a type along the lines of (c-define-type real (type "float" "float int")) where the third parameter of 'type' is a space-delimited list of type tags that should pass for this type. Is this possible, or on the todo list for c-interface improvements? Thanks! -- James Long

2 3

Segmentation fault while building v4.1.2
by jadamson＠partners.org 04 Fév '08

04 Fév '08

Hello Gambit-list, I've gotten a segmentation fault during the build process using the current source (v4.1.2). -- Joel J. Adamson Biostatistician Pediatric Psychopharmacology Research Unit Massachusetts General Hospital Boston, MA 02114 (617) 643-1432 (303) 880-3109 The information transmitted in this electronic communication is intended only for the person or entity to whom it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you received this information in error, please contact the Compliance HelpLine at 800-856-1983 and properly dispose of this information.

1 1

Hello World segfaults on me
by Francisco Listas 04 Fév '08

04 Fév '08

I am running Ubuntu 7.10, and I've just installed (using synaptic) Gambit-C. To try my installation, I just wrote (in file hello.scm) this hello world program: (display "Hello World!\n") Running: gsi hello.scm Produces the expected output. Running: gsc hello.scm Produces hello.o1 executable file, but when I run it, a segfault occurs: ./hello.o1 Segmentation fault (core dumped) If I run it with gdb: (gdb) file hello.o1 Reading symbols from /home/fco/devel/scheme/hello.o1...done. Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1". (gdb) run Starting program: /home/fco/devel/scheme/hello.o1 warning: shared library handler failed to enable breakpoint Program received signal SIGSEGV, Segmentation fault. 0x800003d6 in __do_global_dtors_aux () It fails in __do_global_dtors_aux()!, so it seems there is something wrong with my toolchain, but I am using all the default Ubuntu 7.10 packages. What I am doing wrong here? Thanks, FCo

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Gambit-list Février 2008