1# $NetBSD: HACKS,v 1.93 2007/04/08 09:57:17 scw 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 308port vax 309 310 hack gcc4/vax compiler crash 311 cdate Fri Jun 30 22:39:12 PDT 2006 312 who mrg 313 file bin/csh/Makefile : 1.27 314 file lib/i18n_module/UTF7/Makefile : 1.2 315 descr 316 GCC4 on vax crashes. -O0 stops it happening so far... 317 kcah 318 319 hack gcc 2.95/vax doesn't like abort being used as function pointer 320 cdate Tue Dec 13 05:54:50 GMT 2005 321 who jmc 322 file lib/libc/rpc/svc_vc.c 1.15 323 descr 324 Provide a local definition for abort which doesn't include 325 the noreturn attribute which trips up gcc 2.95 on vax. 326 kcah 327 328 hack gcc 2.95/vax doesn't have stdbool.h and gettext needs it 329 cdate Mon May 9 12:16:22 CDT 2005 330 who jmc 331 file gnu/usr.bin/gettext/Makefile.inc.prog 1.5 332 gnu/usr.bin/gettext/libgrep/Makefile 1.3 333 gnu/usr.bin/gettext/libnlspr/Makefile 1.5 334 gnu/usr.bin/gettext/libnlsut/Makefile 1.3 335 descr 336 The latest gettext assumes a C99 environment or at least 337 configure checks to work around this. As we don't use configure 338 provide a stdbool.h for vax builds locally in directories from 339 the template provided by the gettext code. 340 kcah 341 342 hack gcc 2.95/vax cannot handle __builtin_ffs() 343 cdate Fri Aug 23 21:31:15 CEST 2002 344 who ragge 345 file sys/lib/libkern/libkern.h : 1.42 346 descr 347 __builtin_ffs() is ifdef'd away if __vax__. Matt Thomas has 348 added this feature to GCC 3 so it can be removed when switching. 349 kcah 350 351 hack gcc-vax-libbz2 352 mdate 27 Jun 2002 353 who thorpej 354 file lib/libbz2/Makefile 355 descr 356 libbz2 is mis-compiled with optimization with GCC 2.95.3 357 on VAX. -O0 works around this problem. 358 kcah 359 360 hack vax Toolchain bug 361 cdate 28 Mar 2003 362 who he 363 file sys/arch/vax/vax/intvec.S : 1.5 364 descr 365 Workaround for PR toolchain/20924. The assembler apparently 366 tries to range-check byte offsets when it doesn't have 367 sufficient information to make that decision. 368 Workaround uses `brw' instead of `brb' instruction. 369 kcah 370 371 hack vax gcc 2.95.3 -Wuninitialized workarounds 372 cdate 6 Nov 2003 373 who he 374 file sys/dev/bi/if_ni.c : 1.22 375 file sys/arch/vax/vax/ctu.c : 1.20 376 descr 377 Workaround for gcc 2.95.3 failing to detect that certain 378 variables will be initialized; so that this code compiles 379 with -Wuninitialized. Should be reviewed and possibly 380 reverted when gcc 3.3.2 is ready for vax. 381 kcah 382 383 hack vax gcc 2.95.3 structure initialization 384 cdat 13 May 2004 385 who cl 386 file sys/miscfs/kernfs/kernfs_vnops.c : 1.104 387 descr 388 Workaround for gcc 2.95.3 failing to initialize structures 389 and/or unions inside structures using nested designators. 390 Should be reverted when gcc >=3.3.3 is ready for vax. 391 kcah 392 393 hack vax gcc 2.95.3 needs -I. to build nslexer.c 394 cdat 6 Jun 2004 395 who mhitch 396 file lib/libc/arch/vax/Makefile.inc : 1.6 397 descr 398 It appears necessary to add -I. to CPPFLAGS when building 399 nslesxer.c. This may be caused by gcc 2.95.3 being used. 400 Should be reverted when a newer gcc is ready for vax. 401 kcah 402 403 hack vax gcc 2.95.3 doesn't understand "-std=c99" 404 cdat 5 April 2005 405 who tron 406 file src/share/mk/bsd.sys.mk 407 descr 408 We cannot use "-std=c99" for compiler warning level 4 and above 409 because gcc 2.95.3 doesn't support that option. 410 kcah 411 412 hack declare boolean_t in two IPF user-mode programs 413 cdate Tue Mar 7 19:19:20 CET 2006 414 who he 415 file dist/ipf/ipsend/iptests.c : 1.8 416 dist/ipf/ipsend/sock.c : 1.7 417 descr 418 The IPF user-mode programs ipsend and iptest first 419 include <sys/types.h> without _KERNEL defined, and 420 later include <sys/file.h> with _KERNEL defined. 421 This causes a build failure when building for vax, 422 since <sys/device.h> ends up being included without 423 bollean_t being defined by <sys/types.h>. 424 Build failure and further details documented in 425 PR#32907. 426 kcah 427 428port arm 429 430 hack gcc-unsigned-compare 431 cdate 09 Mar 2002 432 mdate 18 Mar 2002 433 who bjh21 434 file dist/bind/lib/nameser/ns_parse.c : 1.3 435 file dist/dhcp/minires/ns_parse.c : 1.3 436 file dist/dhcp/omapip/result.c : 1.2 437 file dist/dhcp/server/failover.c : 1.3 438 file gnu/dist/toolchain/bfd/bfd.c : 1.2 439 file gnu/dist/toolchain/bfd/format.c : 1.2 440 file gnu/dist/toolchain/gdb/target.c : 1.2 441 file sys/kern/vfs_subr.c : 1.172 442 descr When checking that a potentially-unsigned enum is >= 0, assign 443 it to an int first. This is necessary to avoid "comparison is 444 always true" warnings with -fshort-enums. Casting to an int 445 really should be enough, but turns out not to be. 446 kcah 447 448 hack gcc 3.3.2/arm sys/kern/uipc_socket.c 449 cdate Tue Oct 28 18:02:16 GMT 2003 450 who skrll 451 pr 23044 452 file sys/arch/arm/conf/Makefile.arm : 1.19 453 descr 454 Performing a build.sh tools on a CATS with NFS mounted 455 obj and src directories results in "panic: receive 1" 456 The hack is to compile sys/kern/uipc_socket.c with 457 -fno-strict-aliasing 458 kcah 459 460 461port pc532 462 463 hack egcs-pc532-ip6_mroute 464 cdate 09 Jul 2002 465 who simonb 466 file sys/arch/pc532/conf/Makefile.pc532 : 1.70 467 file sys/arch/pc532/conf/files.pc532 : 1.47 468 descr 469 egcs 1.1.2 gets an "internal error--insn does not satisfy its 470 constraints" error compiling ip6_mroute.c with -O2 or greater. 471 -O1 works around this problem. 472 kcah 473 474 hack gcc-pc532-duffs_device 475 cdate Mon Oct 27 07:23:05 UTC 2003 476 who simonb 477 file sys/arch/pc532/conf/Makefile.pc532 : 1.71 478 file sys/arch/pc532/conf/files.pc532 : 1.52 479 pr GCC PR optimization/5230 480 descr 481 gcc incorrectly gives an "unreachable code at beginning of 482 switch statement" for a Duff's device construct in 483 arch/pc532/dev/ncr.c. There is no way to disable just this 484 warning, so -Wno-error is turned on for this file. 485 kcah 486 487 hack gcc332-cppmacro-ice 488 cdate Sun Dec 7 12:48:33 UTC 2003 489 who simonb 490 file gnu/usr.bin/gcc3/libcpp/Makefile : 1.2 491 descr 492 gcc 3.3.2 gets an ICE when compiling cppmacro.c with -O2. 493 The hack is to use -O1 for this file. Fixed in gcc 494 -current mainline, unable to work out where the fix is 495 right now. 496 kcah 497 498 499port sh3 500 501 hack gcc4-sh3-bz2 502 mdate 20 May 2006 503 who mrg 504 file lib/libbz2/Makefile : 1.10 505 descr 506 The in-tree GCC 4.1-based compiler generated too-far 507 pc-relative addresses. Hack is to build with -O0. 508 kcah 509 510 511port sun2 512 513 hack gcc 3.3.2/mdsetimage 514 cdate Tue Oct 28 18:43:05 EST 2003 515 who fredette 516 file gnu/usr.sbin/mdsetimage/Makefile : 1.15 517 descr 518 mdsetimage.c causes cc1 to barf for as-yet unknown reasons. 519 this hack uses -O0 to avoid the problem. 520 kcah 521 522 hack gcc 3.3.2/installboot/ffs.c 523 cdate Tue Oct 28 18:43:05 EST 2003 524 who fredette 525 file usr.sbin/installboot/Makefile : 1.26 526 descr 527 ffs.c causes cc1 to barf for as-yet unknown reasons. this 528 hack uses -O0 to avoid the problem. 529 kcah 530 531 hack gcc 4.1.1/fsck_ffs/pass1.c 532 cdate Fri Jun 23 10:30:25 PDT 2006 533 who mrg 534 file sbin/fsck_ffs/Makefile : 1.30 535 file sbin/fsdb/Makefile : 1.19 536 file sbin/dump_lfs/Makefile : 1.9 537 file usr.sbin/ndbootd/Makefile : 1.2 538 descr 539 pass1.c causes cc1 to barf for as-yet unknown reasons. this 540 hack uses -O0 to avoid the problem. (these all seem to be the 541 same problem.) 542 kcah 543 544 545port m68000 546 547 hack gcc 3.3.2/gcc/ra-colorize.c 548 cdate Wed Nov 5 11:03:13 EST 2003 549 who mrg 550 file gnu/usr.bin/gcc3/backend/Makefile : 1.11 551 descr 552 ra-colorize.c causes a whole spew of unreferenced .L* local 553 symbols. using -O0 (or even -O2 reportedly) avoids the problem. 554 Note this has been fixed in 3.3.3 at least on m68k, 555 but it hasn't been confirmed on sun2/m68000. 556 (it's too slow even on emulator and unlikely to build 557 toolchains on sun2 with its maximum 4MB RAM) 558 kcah 559 560port sparc64 561 562 hack disable optimzations for uvm_bio.c on 32 bit kernels 563 cdate Sun Mar 21 14:14:04 MET 2004 564 who martin 565 file sys/arch/sparc64/conf/Makefile.sparc64 : 1.53-1.54 566 file sys/arch/sparc64/conf/files.sparc64 : 1.93 567 descr 568 The sparc compiler miscompiles uvm_bio.c when using 569 any optimization. This results in ubc_release panics. 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/regress/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 use volatile intermediate variable to enforce rounding 615 cdate Tue Aug 1 22:15:55 MEST 2006 616 who drochner 617 file src/lib/libm/src/lrintf.c : 1.4 618 file src/lib/libm/src/s_rintf.c : 1.8 619 descr 620 gcc-4 does subsequent operations on "float" values within 621 the i387 FPU without rounding the intermediate results 622 kcah 623