HACKS revision 1.91.2.2.2.1
1# $NetBSD: HACKS,v 1.91.2.2.2.1 2012/03/17 19:39:34 bouyer Exp $ 2# 3# This file is intended to document workarounds for currently unsolved 4# (mostly) compiler bugs. 5# 6# Format: 7# hack title 8# cdate creation date 9# mdate mod date 10# who responsible developer 11# port ... 12# affected ports, space separated, if not "all" 13# file affected file : revision : line from : line to 14# affected files and revision and line numbers describing hack 15# multiple lines if necessary. 16# pr NNNN ... 17# problem reports this hack works around, if known. Space 18# separated. 19# regress src/regress/directory/where/test/found 20# regression test directories, if available. 21# descr 22# insert short informal description (multi-line). (Longer ones 23# should be in the PR database. More formal descriptions might 24# be in the regress tree. See above). 25# kcah 26# closing bracket. 27# 28# this is a comment. 29 30hack netstat ieee1394 address printing. 31mdate 14 Nov 2000 32who matt 33file lib/libc/net/getnameinfo.c : 1.32 : 497 : 503 34descr 35 Because the current implementation of IP over IEEE1394, the 36 fw device address contains more than just the IEEE1394 EUI-64. 37 So when printing out IEEE1394 addresses, ignore the extra stuff. 38kcah 39 40hack xterm vs. libterm 41mdate 01 Aug 2000 42who jdc 43file xsrc/xc/programs/xterm/main.c : 1.2 : 3609 : 3614 44pr 10383 45descr 46 In order to extend the termcap string over 1023 bytes, a ZZ entry was 47 introduced to point to a memory location containing the full entry. 48 Without this hack, xterm will export a termcap containing the ZZ 49 entry, which will then be ignored by libterm. As xterm modifies the 50 exported termcap, this would cause those modifications to be ignored. 51kcah 52 53hack wi-at-big-endian-bus 54cdate 15 Mar 2002 55who martin 56file dev/ic/wireg.h 57descr Add an option to access the underlying bus in big endian byte order 58 to work around deficiencies in bus_space_{read,write}_* macros. 59 Those don't allow the implementation of a proper pcmcia bus space 60 tag. 61kcah 62 63hack specific knowledge of colours in curses code 64cdate Sun Apr 6 11:05:24 BST 2003 65who jdc 66file lib/libcurses/color.c : r1.24 67descr 68 Swap red/blue and yellow/cyan colours for COLOR_OTHER. 69 Fix is to enhance libtermcap to understand terminfo-style % sequences. 70 See also: 71 http://mail-index.NetBSD.org/tech-userlevel/2003/04/06/0000.html 72kcah 73 74hack Compensation for differing types of LINUX_USRSTACK and USRSTACK 75cdate 21 Aug 2003 76who he 77file sys/miscfs/procfs/procfs_linux.c : 1.14 78descr 79 Not all ports have LINUX_USRSTACK and/or USRSTACK defined as 80 literals/constants, but refer to variables of a type which is 81 not "unsigned long", causing compilation of procfs_linux.c to 82 fail with "makes integer from pointer without a cast". This 83 is observed on e.g. the sun3 port. Ideally the "types" for 84 symbols should be consistent across all ports. 85kcah 86 87hack GCC2 isn't C99 88cdate 5 December 2003 89who mrg 90file gnu/dist/binutils/ld/ldlex.c: r1.2 91descr 92 ldlex.c is generated from ldlex.l and we get macro redefinition 93 errors from it if __STDC_VERSION__ is not C99 compliant. This 94 hack forces NetBSD 1.6 and later systems to also include <stdint.h> 95 to get the relevant definitions. This hack should be backed out 96 when all platforms have switched away from GCC2. 97kcah 98 99hack gcc-strict-aliasing 100cdate 6 August 2004 101who junyoung 102pr 26516 103file src/usr.sbin/racoon/racoon/Makefile : 1.21 104descr 105 GCC issues a warning "dereferencing type-punned pointer will break 106 strict-aliasing rules" when compiling 107 crypto/dist/kame/racoon/crypto/openssl.c with -O[23s]. Note that this 108 is due to use of type casting in a non-standard way in the code and 109 not a compiler bug. Once a new release of KAME with a proper fix 110 applied is imported this should be backed out. 111kcah 112 113hack gcc 3.3.3 wrong uninitialised variable 114mdate 12 May 2006 115who he 116file usr.bin/msgc/msg_sys.def : 1.33-1.34 117file distrib/utils/sysinst/aout2elf.c : 1.11 118descr 119 Gcc 3.3.3 gets some -Wuninitialized warnings wrong. This is 120 just one of many in the tree, marked with 121 /* XXX -Wuninitialized [arch] */ 122 in the source. 123kcah 124 125hack gcc4 wrong uninitialized variable 126mdate 10 May 2006 127who mrg 128file bin/ksh/eval.c : 1.6 129file bin/sh/histedit.c : 1.39 130file bin/sh/parser.c : 1.60 131file bin/systrace/systrace.c : 1.33 132file crypto/dist/heimdal/kdc/524.c : 1.10 133file crypto/dist/ssh/sftp.c : 1.20 134file crypto/dist/ssh/ssh-keysign.c : 1.11 135file dist/ipf/lib/hostname.c : 1.2 136file dist/ipf/tools/ipmon.c : 1.8 137file dist/ntp/ntpd/ntp_request.c : 1.4 138file dist/ntp/ntpd/refclock_shm.c : 1.4 139file dist/ntp/sntp/timing.c : 1.3 140file dist/pppd/pppstats/pppstats.c : 1.3 141file dist/smbfs/lib/smb/rap.c : 1.6 142file dist/tcpdump/print-zephyr.c : 1.5 143file distrib/utils/sysinst/aout2elf.c : 1.12 144file gnu/libexec/uucp/uucico/uucico.c : 1.6 145file lib/libc/citrus/citrus_csmapper.c : 1.6 146file lib/libc/citrus/citrus_pivot_factory.c : 1.5 147file lib/libc/inet/inet_cidr_ntop.c : 1.3 148file lib/libc/inet/inet_ntop.c : 1.3 149file lib/libc/stdio/vfwprintf.c : 1.8 150file libexec/ld.elf_so/arch/m68k/mdreloc.c : 1.20 151file libexec/ld.elf_so/arch/powerpc/ppc_reloc.c : 1.40 152file libexec/ld.elf_so/arch/sh3/mdreloc.c : 1.22 153file libexec/ld.elf_so/arch/sparc/mdreloc.c : 1.39 154file libexec/ld.elf_so/arch/sparc64/mdreloc.c : 1.39 155file libexec/ld.elf_so/arch/vax/mdreloc.c : 1.21 156file libexec/ld.elf_so/arch/x86_64/mdreloc.c : 1.27 157file sbin/fsck_ext2fs/dir.c : 1.19 158file sbin/routed/rtquery/rtquery.c : 1.18 159file sys/arch/amd64/amd64/pmap.c : 1.26 160file sys/arch/i386/pci/piixpcib.c : 1.4 161file sys/arch/m68k/m68k/pmap_motorola.c : 1.4 162file sys/crypto/cast128/cast128.c : 1.9 163file sys/ddb/db_command.c : 1.86 164file sys/dev/cardbus/cardbus_map.c : 1.21 165file sys/dev/fss.c : 1.25 166file sys/dev/ic/igsfb.c : 1.39 167file sys/dev/ic/mb86950.c : 1.5 168file sys/dev/ic/midway.c : 1.71 169file sys/dev/kttcp.c : 1.18 170file sys/dev/rasops/rasops_bitops.h : 1.9 171file sys/dev/pci/cmpci.c : 1.31 172file sys/dev/pci/machfb.c : 1.45 173file sys/dev/usb/ohci.c : 1.174 174file sys/dev/usb/uhci.c : 1.196 175file sys/dev/rasops/rasops_bitops.h : 1.9 176file sys/dist/ipf/netinet/ip_nat.c : 1.10 177file sys/dist/ipf/netinet/ip_rpcb_pxy.c : 1.8 178file sys/dist/pf/net/pf.c : 1.22 179file sys/fs/udf/udf_vnops.c : 1.4 180file sys/kern/kern_sig.c : 1.219 181file sys/kern/tty.c : 1.181 182file sys/net/bpf.c : 1.116 183file sys/net/zlib.c : 1.26 184file sys/netccitt/if_x25subr.c : 1.37 185file sys/netinet/in.c : 1.107 186file sys/netsmb/smb_smb.c : 1.27 187file sys/netsmb/smb_trantcp.c : 1.22 188file sys/nfs/nfs_serv.c : 1.108 189file sys/nfs/nfs_socket.c : 1.129 190file sys/nfs/nfs_syscalls.c : 1.91 191file sys/ufs/lfs/lfs_vfsops.c : 1.207 [also (char *)] 192file usr.bin/ftp/ftp.c : 1.140 193file usr.bin/find/function.c : 1.54 194file usr.bin/mail/tty.c : 1.20 195file usr.bin/nl/nl.c : 1.7 196file usr.bin/systat/keyboard.c : 1.23 197file usr.bin/usbhidctl/usbhid.c : 1.29 198file usr.bin/vi/cl/cl_read.c : 1.5 199file usr.bin/vi/ex/ex_cscope.c : 1.12 200file usr.bin/vi/ex/ex_tag.c : 1.19 201file usr.bin/vi/vi/v_txt.c : 1.15 202file usr.sbin/altq/altqstat/qdisc_rio.c : 1.4 203file usr.sbin/cron/do_command.c : 1.19 204file usr.sbin/timed/timed/slave.c : 1.15 205descr 206 GCC 4.1 gets many uninitialised variable warnings wrong. We should 207 really audit all the old hacks like this when older compilers are 208 removed from the tree, as many are probably no longer required. 209 The problem is that it does not recognize initialization via function 210 call pointer. I.e. 211 int p; 212 foo(&p); 213 does not mark p as initialized. 214kcah 215 216hack gcc4 pointer sign and strict aliasing problems 217mdate 10 May 2006 218who mrg 219file bin/ed/Makefile : 1.33 220file bin/systrace/Makefile : 1.12 221file distrib/utils/sysinst/Makefile.inc : 1.44 222file distrib/utils/x_dhclient/Makefile : 1.15 223file games/bcd/Makefile : 1.5 224file games/dab/Makefile : 1.5 225file games/larn/Makefile : 1.17 226file games/pom/Makefile : 1.5 227file lib/libasn1/Makefile : 1.26 228file lib/libcrypt/Makefile : 1.17 229file lib/libgssapi/Makefile : 1.16 230file lib/libhdb/Makefile : 1.20 231file lib/libkadm5clnt/Makefile : 1.21 232file lib/libkadm5srv/Makefile : 1.25 233file lib/libkrb5/Makefile : 1.35 234file lib/libssh/Makefile : 1.6 235file lib/libtelnet/Makefile : 1.26 236file libexec/getty/Makefile : 1.14 237file libexec/kadmind/Makefile : 1.19 238file libexec/kpasswdd/Makefile : 1.14 239file sbin/atactl/Makefile : 1.3 240file sbin/cgdconfig/Makefile : 1.7 241file sbin/clri/Makefile : 1.13 242file sbin/dkctl/Makefile : 1.4 243file sbin/dump/Makefile : 1.33 244file sbin/fdisk/Makefile : 1.35 245file sbin/fsck_ext2fs/Makefile : 1.11 246file sbin/fsck_ffs/Makefile : 1.29 247file sbin/fsdb/Makefile : 1.18 248file sbin/mount_smbfs/Makefile : 1.4 249file sbin/newfs/Makefile : 1.30 250file sbin/newfs_sysvbfs/Makefile : 1.2 251file sbin/restore/Makefile : 1.23 252file sbin/veriexecctl/Makefile : 1.11 253file sys/lib/libsa/Makefile : 1.59 254file sys/arch/evbarm/adi_brh/brh_machdep.c : 1.24 255file usr.bin/awk/Makefile : 1.9 256file usr.bin/crontab/Makefile : 1.24 257file usr.bin/ctags/Makefile : 1.8 258file usr.bin/gzip/Makefile : 1.10 259file usr.bin/ssh/sftp/Makefile : 1.10 260file usr.bin/ssh/ssh/Makefile : 1.25 261file usr.bin/vi/build/Makefile : 1.26 262file usr.bin/telnet/Makefile : 1.40 263file usr.bin/tn3270/tn3270/Makefile : 1.36 264file usr.bin/tr/Makefile : 1.4 265file usr.sbin/amd/amd/Makefile : 1.27 266file usr.sbin/amd/amq/Makefile : 1.14 267file usr.sbin/amd/libamu/Makefile : 1.20 268file usr.sbin/amd/pawd/Makefile : 1.5 269file usr.sbin/bind/Makefile.inc : 1.22 270file usr.sbin/bind/libdns/Makefile : 1.3 271file usr.sbin/bind/named/Makefile : 1.17 272file usr.sbin/bootp/bootptest/Makefile : 1.2 273file usr.sbin/chrtbl/Makefile : 1.6 274file usr.sbin/cron/Makefile : 1.12 275file usr.sbin/dhcp/Makefile.inc : 1.20 276file usr.sbin/dumplfs/Makefile : 1.11 277file usr.sbin/hprop/Makefile : 1.13 278file usr.sbin/installboot/Makefile : 1.35 279file usr.sbin/ipf/ipftest/Makefile : 1.32 280file usr.sbin/isdn/isdnd/Makefile : 1.6 281file usr.sbin/isdn/isdnmonitor/Makefile : 1.3 282file usr.sbin/isdn/isdntel/Makefile : 1.2 283file usr.sbin/isdn/isdntrace/Makefile : 126 284file usr.sbin/mopd/common/Makefile : 1.10 285file usr.sbin/mopd/mopd/Makefile : 1.9 286file usr.sbin/mopd/mopprobe/Makefile : 1.7 287file usr.sbin/makefs/Makefile : 1.17 288file usr.sbin/mscdlabel/Makefile : 1.5 289file usr.sbin/pkg_install/add/Makefile : 1.7 290file usr.sbin/pkg_install/create/Makefile : 1.5 291file usr.sbin/pkg_install/lib/Makefile : 1.28 292file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11 293file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5 294file usr.sbin/pppd/Makefile.inc : 1.3 295file usr.sbin/pppd/pppd/Makefile : 1.38 296file usr.sbin/rarpd/Makefile : 1.10 297file usr.sbin/rbootd/Makefile : 1.10 298file usr.sbin/rpc.pcnfsd/Makefile : 1.17 299file usr.sbin/rtadvd/Makefile : 1.9 300file usr.sbin/tcpdump/Makefile : 1.42 301file usr.sbin/wiconfig/Makefile : 1.3 302descr 303 GCC 4.1 warns on pointer sign comparision/assignments and lots of 304 code does not conform. For now we use -Wno-pointer-sign and 305 -fno-strict-aliasing. 306kcah 307 308hack rbus resource allocation work around 309cdate 10 May 2007 310who jnemeth 311file src/sys/dev/pcmcia/aic_pcmcia.c : 1.35 312pr 26909 31245 313descr 314 On some cards, the card align field property value interferes 315 with the rbus resource allocation causing the card not to 316 configure properly. Setting it to 0 fixes the problem but it 317 is not the proper solution. 318kcah 319 320port vax 321 322 hack gcc4/vax compiler crash 323 cdate Fri Jun 30 22:39:12 PDT 2006 324 who mrg 325 file bin/csh/Makefile : 1.27 326 file lib/i18n_module/UTF7/Makefile : 1.2 327 descr 328 GCC4 on vax crashes. -O0 stops it happening so far... 329 kcah 330 331 hack gcc 2.95/vax doesn't like abort being used as function pointer 332 cdate Tue Dec 13 05:54:50 GMT 2005 333 who jmc 334 file lib/libc/rpc/svc_vc.c 1.15 335 descr 336 Provide a local definition for abort which doesn't include 337 the noreturn attribute which trips up gcc 2.95 on vax. 338 kcah 339 340 hack gcc 2.95/vax doesn't have stdbool.h and gettext needs it 341 cdate Mon May 9 12:16:22 CDT 2005 342 who jmc 343 file gnu/usr.bin/gettext/Makefile.inc.prog 1.5 344 gnu/usr.bin/gettext/libgrep/Makefile 1.3 345 gnu/usr.bin/gettext/libnlspr/Makefile 1.5 346 gnu/usr.bin/gettext/libnlsut/Makefile 1.3 347 descr 348 The latest gettext assumes a C99 environment or at least 349 configure checks to work around this. As we don't use configure 350 provide a stdbool.h for vax builds locally in directories from 351 the template provided by the gettext code. 352 kcah 353 354 hack gcc 2.95/vax cannot handle __builtin_ffs() 355 cdate Fri Aug 23 21:31:15 CEST 2002 356 who ragge 357 file sys/lib/libkern/libkern.h : 1.42 358 descr 359 __builtin_ffs() is ifdef'd away if __vax__. Matt Thomas has 360 added this feature to GCC 3 so it can be removed when switching. 361 kcah 362 363 hack gcc-vax-libbz2 364 mdate 27 Jun 2002 365 who thorpej 366 file lib/libbz2/Makefile 367 descr 368 libbz2 is mis-compiled with optimization with GCC 2.95.3 369 on VAX. -O0 works around this problem. 370 kcah 371 372 hack vax Toolchain bug 373 cdate 28 Mar 2003 374 who he 375 file sys/arch/vax/vax/intvec.S : 1.5 376 descr 377 Workaround for PR toolchain/20924. The assembler apparently 378 tries to range-check byte offsets when it doesn't have 379 sufficient information to make that decision. 380 Workaround uses `brw' instead of `brb' instruction. 381 kcah 382 383 hack vax gcc 2.95.3 -Wuninitialized workarounds 384 cdate 6 Nov 2003 385 who he 386 file sys/dev/bi/if_ni.c : 1.22 387 file sys/arch/vax/vax/ctu.c : 1.20 388 descr 389 Workaround for gcc 2.95.3 failing to detect that certain 390 variables will be initialized; so that this code compiles 391 with -Wuninitialized. Should be reviewed and possibly 392 reverted when gcc 3.3.2 is ready for vax. 393 kcah 394 395 hack vax gcc 2.95.3 structure initialization 396 cdat 13 May 2004 397 who cl 398 file sys/miscfs/kernfs/kernfs_vnops.c : 1.104 399 descr 400 Workaround for gcc 2.95.3 failing to initialize structures 401 and/or unions inside structures using nested designators. 402 Should be reverted when gcc >=3.3.3 is ready for vax. 403 kcah 404 405 hack vax gcc 2.95.3 needs -I. to build nslexer.c 406 cdat 6 Jun 2004 407 who mhitch 408 file lib/libc/arch/vax/Makefile.inc : 1.6 409 descr 410 It appears necessary to add -I. to CPPFLAGS when building 411 nslesxer.c. This may be caused by gcc 2.95.3 being used. 412 Should be reverted when a newer gcc is ready for vax. 413 kcah 414 415 hack vax gcc 2.95.3 doesn't understand "-std=c99" 416 cdat 5 April 2005 417 who tron 418 file src/share/mk/bsd.sys.mk 419 descr 420 We cannot use "-std=c99" for compiler warning level 4 and above 421 because gcc 2.95.3 doesn't support that option. 422 kcah 423 424 hack declare boolean_t in two IPF user-mode programs 425 cdate Tue Mar 7 19:19:20 CET 2006 426 who he 427 file dist/ipf/ipsend/iptests.c : 1.8 428 dist/ipf/ipsend/sock.c : 1.7 429 descr 430 The IPF user-mode programs ipsend and iptest first 431 include <sys/types.h> without _KERNEL defined, and 432 later include <sys/file.h> with _KERNEL defined. 433 This causes a build failure when building for vax, 434 since <sys/device.h> ends up being included without 435 bollean_t being defined by <sys/types.h>. 436 Build failure and further details documented in 437 PR#32907. 438 kcah 439 440port arm 441 442 hack gcc-unsigned-compare 443 cdate 09 Mar 2002 444 mdate 18 Mar 2002 445 who bjh21 446 file dist/bind/lib/nameser/ns_parse.c : 1.3 447 file dist/dhcp/minires/ns_parse.c : 1.3 448 file dist/dhcp/omapip/result.c : 1.2 449 file dist/dhcp/server/failover.c : 1.3 450 file gnu/dist/toolchain/bfd/bfd.c : 1.2 451 file gnu/dist/toolchain/bfd/format.c : 1.2 452 file gnu/dist/toolchain/gdb/target.c : 1.2 453 file sys/kern/vfs_subr.c : 1.172 454 descr When checking that a potentially-unsigned enum is >= 0, assign 455 it to an int first. This is necessary to avoid "comparison is 456 always true" warnings with -fshort-enums. Casting to an int 457 really should be enough, but turns out not to be. 458 kcah 459 460 hack gcc 3.3.2/arm sys/kern/uipc_socket.c 461 cdate Tue Oct 28 18:02:16 GMT 2003 462 who skrll 463 pr 23044 464 file sys/arch/arm/conf/Makefile.arm : 1.19 465 descr 466 Performing a build.sh tools on a CATS with NFS mounted 467 obj and src directories results in "panic: receive 1" 468 The hack is to compile sys/kern/uipc_socket.c with 469 -fno-strict-aliasing 470 kcah 471 472 473port pc532 474 475 hack egcs-pc532-ip6_mroute 476 cdate 09 Jul 2002 477 who simonb 478 file sys/arch/pc532/conf/Makefile.pc532 : 1.70 479 file sys/arch/pc532/conf/files.pc532 : 1.47 480 descr 481 egcs 1.1.2 gets an "internal error--insn does not satisfy its 482 constraints" error compiling ip6_mroute.c with -O2 or greater. 483 -O1 works around this problem. 484 kcah 485 486 hack gcc-pc532-duffs_device 487 cdate Mon Oct 27 07:23:05 UTC 2003 488 who simonb 489 file sys/arch/pc532/conf/Makefile.pc532 : 1.71 490 file sys/arch/pc532/conf/files.pc532 : 1.52 491 pr GCC PR optimization/5230 492 descr 493 gcc incorrectly gives an "unreachable code at beginning of 494 switch statement" for a Duff's device construct in 495 arch/pc532/dev/ncr.c. There is no way to disable just this 496 warning, so -Wno-error is turned on for this file. 497 kcah 498 499 hack gcc332-cppmacro-ice 500 cdate Sun Dec 7 12:48:33 UTC 2003 501 who simonb 502 file gnu/usr.bin/gcc3/libcpp/Makefile : 1.2 503 descr 504 gcc 3.3.2 gets an ICE when compiling cppmacro.c with -O2. 505 The hack is to use -O1 for this file. Fixed in gcc 506 -current mainline, unable to work out where the fix is 507 right now. 508 kcah 509 510 511port sh3 512 513 hack gcc4-sh3-bz2 514 mdate 20 May 2006 515 who mrg 516 file lib/libbz2/Makefile : 1.10 517 descr 518 The in-tree GCC 4.1-based compiler generated too-far 519 pc-relative addresses. Hack is to build with -O0. 520 kcah 521 522 523port sun2 524 525 hack gcc 3.3.2/mdsetimage 526 cdate Tue Oct 28 18:43:05 EST 2003 527 who fredette 528 file gnu/usr.sbin/mdsetimage/Makefile : 1.15 529 descr 530 mdsetimage.c causes cc1 to barf for as-yet unknown reasons. 531 this hack uses -O0 to avoid the problem. 532 kcah 533 534 hack gcc 3.3.2/installboot/ffs.c 535 cdate Tue Oct 28 18:43:05 EST 2003 536 who fredette 537 file usr.sbin/installboot/Makefile : 1.26 538 descr 539 ffs.c causes cc1 to barf for as-yet unknown reasons. this 540 hack uses -O0 to avoid the problem. 541 kcah 542 543 hack gcc 4.1.1/fsck_ffs/pass1.c 544 cdate Fri Jun 23 10:30:25 PDT 2006 545 who mrg 546 file sbin/fsck_ffs/Makefile : 1.30 547 file sbin/fsdb/Makefile : 1.19 548 file sbin/dump_lfs/Makefile : 1.9 549 file usr.sbin/ndbootd/Makefile : 1.2 550 descr 551 pass1.c causes cc1 to barf for as-yet unknown reasons. this 552 hack uses -O0 to avoid the problem. (these all seem to be the 553 same problem.) 554 kcah 555 556 557port m68000 558 559 hack gcc 3.3.2/gcc/ra-colorize.c 560 cdate Wed Nov 5 11:03:13 EST 2003 561 who mrg 562 file gnu/usr.bin/gcc3/backend/Makefile : 1.11 563 descr 564 ra-colorize.c causes a whole spew of unreferenced .L* local 565 symbols. using -O0 (or even -O2 reportedly) avoids the problem. 566 Note this has been fixed in 3.3.3 at least on m68k, 567 but it hasn't been confirmed on sun2/m68000. 568 (it's too slow even on emulator and unlikely to build 569 toolchains on sun2 with its maximum 4MB RAM) 570 kcah 571 572port macppc 573 574 hack remove inline from rotate_{left,right} 575 cdate Tue Feb 22 13:43:25 EST 2005 576 who christos 577 file src/dist/bind/lib/dns/rbt.c 578 descr 579 The macppc gcc-3.3 compiler miscompiles rbt.c when these 580 functions are inlined. The error is: 581 .* named[368]: rbt.c:1584: INSIST(child != (void *)0) >failed 582 .* named[368]: exiting (due to assertion failure) 583 This is reportedly fixed in gcc-3.4 584 kcah 585 586port mips 587 588 hack mips-shared-linker-load-address 589 cdate Fri Oct 7 08:33:10 UTC 2005 590 who simonb 591 file src/sys/kern/exec_elf32.c : 1.107 592 descr 593 With COMPAT_16 or previous enabled (which enables 594 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 595 load and run at address 0. The check to fix this in 596 rev 1.107 only checks the first psection of the ELF 597 executable, which may not be loadable. A more correct 598 fix is to check the first loadable psection instead of 599 just the first psection. 600 kcah 601 602 hack mips-duplicate-ras-end-label 603 cdate Sat Sep 2 23:29:42 2006 604 who martin 605 file src/regres/sys/kern/ras/ras3/Makefile : 1.3 606 descr 607 Add -fno-reorder-blocks to CFLAGS to avoid duplicate 608 labels by duplicated __asm output from RAS_END() 609 macro. 610 kcah 611 612port i386 613 614 hack minus-Os-broken-machdep-c 615 cdate Mon Jul 31 13:09:01 EDT 2006 616 who christos 617 file src/sys/arch/machdep.c : 1.576 618 descr 619 gcc-4 miscompiles this file with -Os and the resulting 620 kernel resets as reported in PR33725 621 kcah 622 623 hack use volatile intermediate variable to enforce rounding 624 cdate Tue Aug 1 22:15:55 MEST 2006 625 who drochner 626 file src/lib/libm/src/lrintf.c : 1.4 627 file src/lib/libm/src/s_rintf.c : 1.8 628 descr 629 gcc-4 does subsequent operations on "float" values within 630 the i387 FPU without rounding the intermediate results 631 kcah 632