HACKS revision 1.72
1# $NetBSD: HACKS,v 1.72 2006/05/21 00:44:53 mrg 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 uninitialised 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/sparc/mdreloc.c : 1.39 152file libexec/ld.elf_so/arch/sparc64/mdreloc.c : 1.39 153file libexec/ld.elf_so/arch/x86_64/mdreloc.c : 1.27 154file sbin/fsck_ext2fs/dir.c : 1.19 155file sbin/routed/rtquery/rtquery.c : 1.18 156file sys/crypto/cast128/cast128.c : 1.9 157file sys/ddb/db_command.c : 1.86 158file sys/dev/cardbus/cardbus_map.c : 1.21 159file sys/dev/fss.c : 1.25 160file sys/dev/ic/igsfb.c : 1.39 161file sys/dev/ic/mb86950.c : 1.5 162file sys/dev/ic/midway.c : 1.71 163file sys/dev/kttcp.c : 1.18 164file sys/dev/rasops/rasops_bitops.h : 1.9 165file sys/dev/pci/cmpci.c : 1.31 166file sys/dev/pci/machfb.c : 1.45 167file sys/dev/usb/ohci.c : 1.174 168file sys/dev/usb/uhci.c : 1.196 169file sys/dev/rasops/rasops_bitops.h : 1.9 170file sys/dist/ipf/netinet/ip_nat.c : 1.10 171file sys/dist/ipf/netinet/ip_rpcb_pxy.c : 1.8 172file sys/dist/pf/net/pf.c : 1.22 173file sys/fs/udf/udf_vnops.c : 1.4 174file sys/kern/kern_sig.c : 1.219 175file sys/kern/tty.c : 1.181 176file sys/net/bpf.c : 1.116 177file sys/net/zlib.c : 1.26 178file sys/netccitt/if_x25subr.c : 1.37 179file sys/netinet/in.c : 1.107 180file sys/netsmb/smb_smb.c : 1.27 181file sys/netsmb/smb_trantcp.c : 1.22 182file sys/nfs/nfs_serv.c : 1.108 183file sys/nfs/nfs_socket.c : 1.129 184file sys/nfs/nfs_syscalls.c : 1.91 185file sys/ufs/lfs/lfs_vfsops.c : 1.207 [also (char *)] 186file usr.bin/ftp/ftp.c : 1.140 187file usr.bin/find/function.c : 1.54 188file usr.bin/mail/tty.c : 1.20 189file usr.bin/nl/nl.c : 1.7 190file usr.bin/systat/keyboard.c : 1.23 191file usr.bin/usbhidctl/usbhid.c : 1.29 192file usr.bin/vi/cl/cl_read.c : 1.5 193file usr.bin/vi/ex/ex_cscope.c : 1.12 194file usr.bin/vi/ex/ex_tag.c : 1.19 195file usr.bin/vi/vi/v_txt.c : 1.15 196file usr.sbin/altq/altqstat/qdisc_rio.c : 1.4 197file usr.sbin/cron/do_command.c : 1.19 198file usr.sbin/timed/timed/slave.c : 1.15 199descr 200 GCC 4.1 gets many uninitialised variable warnings wrong. We should 201 really audit all the old hacks like this when older compilers are 202 removed from the tree, as many are probably no longer required. 203 The problem is that it does not recognize initialization via function 204 call pointer. I.e. 205 int p; 206 foo(&p); 207 does not mark p as initialized. 208kcah 209 210hack gcc4 pointer sign and strict aliasing problems 211mdate 10 May 2006 212who mrg 213file bin/ed/Makefile : 1.33 214file bin/systrace/Makefile : 1.12 215file distrib/utils/sysinst/Makefile.inc : 1.44 216file games/bcd/Makefile : 1.5 217file games/dab/Makefile : 1.5 218file games/larn/Makefile : 1.17 219file games/pom/Makefile : 1.5 220file lib/libasn1/Makefile : 1.26 221file lib/libcrypt/Makefile : 1.17 222file lib/libgssapi/Makefile : 1.16 223file lib/libhdb/Makefile : 1.20 224file lib/libkadm5clnt/Makefile : 1.21 225file lib/libkadm5srv/Makefile : 1.25 226file lib/libkrb5/Makefile : 1.35 227file lib/libssh/Makefile : 1.6 228file lib/libtelnet/Makefile : 1.26 229file libexec/getty/Makefile : 1.14 230file libexec/kadmind/Makefile : 1.19 231file libexec/kpasswdd/Makefile : 1.14 232file sbin/atactl/Makefile : 1.3 233file sbin/cgdconfig/Makefile : 1.7 234file sbin/clri/Makefile : 1.13 235file sbin/dkctl/Makefile : 1.4 236file sbin/dump/Makefile : 1.33 237file sbin/fdisk/Makefile : 1.35 238file sbin/fsck_ext2fs/Makefile : 1.11 239file sbin/fsck_ffs/Makefile : 1.29 240file sbin/fsdb/Makefile : 1.18 241file sbin/mount_smbfs/Makefile : 1.4 242file sbin/newfs/Makefile : 1.30 243file sbin/newfs_sysvbfs/Makefile : 1.2 244file sbin/restore/Makefile : 1.23 245file sbin/veriexecctl/Makefile : 1.11 246file sys/lib/libsa/Makefile : 1.59 247file sys/arch/evbarm/adi_brh/brh_machdep.c : 1.24 248file usr.bin/awk/Makefile : 1.9 249file usr.bin/crontab/Makefile : 1.24 250file usr.bin/ctags/Makefile : 1.8 251file usr.bin/gzip/Makefile : 1.10 252file usr.bin/ssh/sftp/Makefile : 1.10 253file usr.bin/ssh/ssh/Makefile : 1.25 254file usr.bin/vi/build/Makefile : 1.26 255file usr.bin/telnet/Makefile : 1.40 256file usr.bin/tn3270/tn3270/Makefile : 1.36 257file usr.bin/tr/Makefile : 1.4 258file usr.sbin/amd/amd/Makefile : 1.27 259file usr.sbin/amd/amq/Makefile : 1.14 260file usr.sbin/amd/libamu/Makefile : 1.20 261file usr.sbin/amd/pawd/Makefile : 1.5 262file usr.sbin/bind/Makefile.inc : 1.22 263file usr.sbin/bind/libdns/Makefile : 1.3 264file usr.sbin/bind/named/Makefile : 1.17 265file usr.sbin/bootp/bootptest/Makefile : 1.2 266file usr.sbin/chrtbl/Makefile : 1.6 267file usr.sbin/cron/Makefile : 1.12 268file usr.sbin/dhcp/Makefile.inc : 1.20 269file usr.sbin/dumplfs/Makefile : 1.11 270file usr.sbin/hprop/Makefile : 1.13 271file usr.sbin/installboot/Makefile : 1.35 272file usr.sbin/ipf/ipftest/Makefile : 1.32 273file usr.sbin/isdn/isdnd/Makefile : 1.6 274file usr.sbin/isdn/isdnmonitor/Makefile : 1.3 275file usr.sbin/isdn/isdntel/Makefile : 1.2 276file usr.sbin/isdn/isdntrace/Makefile : 126 277file usr.sbin/mopd/common/Makefile : 1.10 278file usr.sbin/mopd/mopd/Makefile : 1.9 279file usr.sbin/mopd/mopprobe/Makefile : 1.7 280file usr.sbin/makefs/Makefile : 1.17 281file usr.sbin/mscdlabel/Makefile : 1.5 282file usr.sbin/pkg_install/add/Makefile : 1.7 283file usr.sbin/pkg_install/create/Makefile : 1.5 284file usr.sbin/pkg_install/lib/Makefile : 1.28 285file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11 286file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5 287file usr.sbin/pppd/Makefile.inc : 1.3 288file usr.sbin/pppd/pppd/Makefile : 1.38 289file usr.sbin/rarpd/Makefile : 1.10 290file usr.sbin/rbootd/Makefile : 1.10 291file usr.sbin/rpc.pcnfsd/Makefile : 1.17 292file usr.sbin/rtadvd/Makefile : 1.9 293file usr.sbin/tcpdump/Makefile : 1.42 294file usr.sbin/wiconfig/Makefile : 1.3 295descr 296 GCC 4.1 warns on pointer sign comparision/assignments and lots of 297 code does not conform. For now we use -Wno-pointer-sign and 298 -fno-strict-aliasing. 299kcah 300 301port vax 302 303 hack gcc 2.95/vax doesn't like abort being used as function pointer 304 cdate Tue Dec 13 05:54:50 GMT 2005 305 who jmc 306 file lib/libc/rpc/svc_vc.c 1.15 307 descr 308 Provide a local definition for abort which doesn't include 309 the noreturn attribute which trips up gcc 2.95 on vax. 310 311 hack gcc 2.95/vax doesn't have stdbool.h and gettext needs it 312 cdate Mon May 9 12:16:22 CDT 2005 313 who jmc 314 file gnu/usr.bin/gettext/Makefile.inc.prog 1.5 315 gnu/usr.bin/gettext/libgrep/Makefile 1.3 316 gnu/usr.bin/gettext/libnlspr/Makefile 1.5 317 gnu/usr.bin/gettext/libnlsut/Makefile 1.3 318 descr 319 The latest gettext assumes a C99 environment or at least 320 configure checks to work around this. As we don't use configure 321 provide a stdbool.h for vax builds locally in directories from 322 the template provided by the gettext code. 323 324 hack gcc 2.95/vax can't handle __used__ in mcount.c 325 cdate Fri May 6 14:30:53 CDT 2005 326 who jmc 327 file src/lib/libc/gmon/mcount.c 1.17 328 descr 329 Recent changes to mark this as __used__ to prevent optimization 330 away on sparc64 don't work on 2.95 vax. Ifdef'd back in the 331 old __unused__ if on vax. 332 333 hack gcc 2.95/vax cannot handle __builtin_ffs() 334 cdate Fri Aug 23 21:31:15 CEST 2002 335 who ragge 336 file sys/lib/libkern/libkern.h : 1.42 337 descr 338 __builtin_ffs() is ifdef'd away if __vax__. Matt Thomas has 339 added this feature to GCC 3 so it can be removed when switching. 340 341 342 hack gcc-vax-libbz2 343 mdate 27 Jun 2002 344 who thorpej 345 file lib/libbz2/Makefile 346 descr 347 libbz2 is mis-compiled with optimization with GCC 2.95.3 348 on VAX. -O0 works around this problem. 349 kcah 350 351 hack gawk 352 mdate 8 Nov 2003 353 who ragge 354 file gnu/usr.bin/gawk/Makefile 355 descr 356 gawk 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 sparc64 429 430 hack binutil-2.11-sparc64-pltrela 431 mdate 14 Aug 2001 432 who eeh 433 file libexec/ld.elf_so/arch/sparc64/mdreloc.c 434 descr 435 The first four PLT entries are reserved. There is some 436 disagreement whether they should have associated relocation 437 entries. Both the SPARC 32-bit and 64-bit ELF specifications 438 say that they should have relocation entries, but the 32-bit 439 SPARC binutils do not generate them, and now the 64-bit SPARC 440 binutils have stopped generating them too. 441 442 To provide binary compatibility, we will check the first entry, 443 if it is reserved it should not be of the type JMP_SLOT. If it 444 is JMP_SLOT, then the 4 reserved entries were not generated and 445 our index is 4 entries too far, so we frob the rela pointer. 446 kcah 447 448 449port arm 450 451 hack gcc-unsigned-compare 452 cdate 09 Mar 2002 453 mdate 18 Mar 2002 454 who bjh21 455 file dist/bind/lib/nameser/ns_parse.c : 1.3 456 file dist/dhcp/minires/ns_parse.c : 1.3 457 file dist/dhcp/omapip/result.c : 1.2 458 file dist/dhcp/server/failover.c : 1.3 459 file gnu/dist/gawk/eval.c : 1.4 460 file gnu/dist/toolchain/bfd/bfd.c : 1.2 461 file gnu/dist/toolchain/bfd/format.c : 1.2 462 file gnu/dist/toolchain/gdb/target.c : 1.2 463 file sys/kern/vfs_subr.c : 1.172 464 descr When checking that a potentially-unsigned enum is >= 0, assign 465 it to an int first. This is necessary to avoid "comparison is 466 always true" warnings with -fshort-enums. Casting to an int 467 really should be enough, but turns out not to be. 468 kcah 469 470 hack gcc 3.3.2/arm sys/kern/uipc_socket.c 471 cdate Tue Oct 28 18:02:16 GMT 2003 472 who skrll 473 pr 23044 474 file sys/arch/arm/conf/Makefile.arm : 1.19 475 descr 476 Performing a build.sh tools on a CATS with NFS mounted 477 obj and src directories results in "panic: receive 1" 478 The hack is to compile sys/kern/uipc_socket.c with 479 -fno-strict-aliasing 480 kcah 481 482 483port pc532 484 485 hack egcs-pc532-ip6_mroute 486 cdate 09 Jul 2002 487 who simonb 488 file sys/arch/pc532/conf/Makefile.pc532 : 1.70 489 file sys/arch/pc532/conf/files.pc532 : 1.47 490 descr 491 egcs 1.1.2 gets an "internal error--insn does not satisfy its 492 constraints" error compiling ip6_mroute.c with -O2 or greater. 493 -O1 works around this problem. 494 kcah 495 496 hack gcc-pc532-duffs_device 497 cdate Mon Oct 27 07:23:05 UTC 2003 498 who simonb 499 file sys/arch/pc532/conf/Makefile.pc532 : 1.71 500 file sys/arch/pc532/conf/files.pc532 : 1.52 501 pr GCC PR optimization/5230 502 descr 503 gcc incorrectly gives an "unreachable code at beginning of 504 switch statement" for a Duff's device construct in 505 arch/pc532/dev/ncr.c. There is no way to disable just this 506 warning, so -Wno-error is turned on for this file. 507 kcah 508 509 hack gcc332-cppmacro-ice 510 cdate Sun Dec 7 12:48:33 UTC 2003 511 who simonb 512 file gnu/usr.bin/gcc3/libcpp/Makefile : 1.2 513 descr 514 gcc 3.3.2 gets an ICE when compiling cppmacro.c with -O2. 515 The hack is to use -O1 for this file. Fixed in gcc 516 -current mainline, unable to work out where the fix is 517 right now. 518 kcah 519 520 521port sh3 522 523 hack gcc-sh3-sed 524 mdate 23 Apr 2002 525 who thorpej 526 file usr.bin/sed/Makefile : 1.9 : 9 : 13 527 descr 528 The in-tree GCC 2.95.3-based compiler ICEs when building 529 with optimization for SuperH. Hack is to build with -O0. 530 kcah 531 532 533port sh5 534 535 hack SuperH SH5 Toolchain Bugs 536 cdate 11 Jul 2002 537 who scw 538 file usr.sbin/ndbootd/ndbootd.c : 1.6 539 file usr.sbin/traceroute/traceroute.c : 1.48 540 descr 541 The SuperH SH5 toolchain (2.97-sh5-010522) gets an internal 542 compiler error when assigning a bit-wise inverted value 543 under some circumstances. 544 Work around it by splitting the statement into two. 545 kcah 546 547 hack SuperH SH5 Toolchain Bugs 548 cdate 17 May 2003 549 who scw 550 file lib/libpthread/pthread_lock.c : 1.7 551 descr 552 The SuperH SH5 toolchain generates incorrect PIC code when 553 faced with a symbol which is declared extern, but has local 554 scope due to being defined within an asm() statement (without 555 being declared .globl in that statement). Work around it by 556 adding the .globl. 557 kcah 558 559 hack gcc 3.3.2 on sh5 - ICE compiling reload1.c at -O2 560 cdate Sun Dec 7 19:44:05 GMT 2003 561 who scw 562 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 563 descr 564 Gcc3 for sh5 gets an ICE compiling reload1.c at -O2. 565 Drop to -O1 for now when building for sh5. 566 kcah 567 568 hack gcc 3.3.2 on sh5 - ICE compiling elf32.c/elf64.c at -O2 569 cdate Sun Dec 7 21:10:46 GMT 2003 570 who scw 571 file gnu/lib/libbfd/Makefile : 1.39 572 descr 573 Gcc3 for sh5 gets an ICE compiling libbfd's elf32.c 574 and elf64.c at -O2. 575 Drop to -O1 for now when building for sh5. 576 kcah 577 578 579 hack gcc 3.3.2 on sh5 - fatal warning compiling function.c 580 cdate Sun Dec 7 19:44:05 GMT 2003 581 who scw 582 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 583 descr 584 Gcc3 for sh5 issues a warning: 585 .../gnu/dist/gcc/gcc/function.c:4742: warning: `and' of 586 mutually exclusive equal-tests is always 0. 587 This causes the build to fail because of -Werror. 588 Work-around by defining NOGCCERROR when building for sh5. 589 kcah 590 591 hack gcc 3.3.3 on sh5 - ICE compiling rbtdb.c and rbtdb64.c 592 cdate Thu Nov 11 00:35:33 UTC 2004 593 who he 594 file usr.sbin/bind/libdns/Makefile/1.2 595 descr 596 Gcc3 for sh5 gets an ICE compiling these files at -O2. 597 Drop to -O1 for now when building for sh5. 598 kcah 599 600 hack gcc 3.3.3 nb3 on sh5 - ICE compiling bsd-comp.c 601 cdate Thu May 25 23:05:20 UTC 2005 602 who he 603 file sys/lkm/net/bsdcomp/Makefile : 1.3 604 descr 605 Gcc3 for sh5 gets an ICE compiling this at -O2, 606 "could not split insn". Drop to -O1 for sh5. 607 kcah 608 609 hack gcc 3.3.3 nb3 on sh5 - ICE compiling strtod.c 610 cdate Tue Jan 31 10:51:52 GMT 2006 611 who scw 612 file lib/libc/gdtoa/Makefile.inc : 1.2 613 descr 614 Gcc3 for sh5 gets an ICE compiling this at -O2, 615 "could not split insn". Drop to -O1 for sh5. 616 kcah 617 618port sun2 619 620 hack gcc 3.3.2/mdsetimage 621 cdate Tue Oct 28 18:43:05 EST 2003 622 who fredette 623 file gnu/usr.sbin/mdsetimage/Makefile : 1.15 624 descr 625 mdsetimage.c causes cc1 to barf for as-yet unknown reasons. 626 this hack uses -O0 to avoid the problem. 627 kcah 628 629 hack gcc 3.3.2/installboot/ffs.c 630 cdate Tue Oct 28 18:43:05 EST 2003 631 who fredette 632 file usr.sbin/installboot/Makefile : 1.26 633 descr 634 ffs.c causes cc1 to barf for as-yet unknown reasons. this 635 hack uses -O0 to avoid the problem. 636 kcah 637 638 639port m68000 640 641 hack gcc 3.3.2/gcc/ra-colorize.c 642 cdate Wed Nov 5 11:03:13 EST 2003 643 who mrg 644 file gnu/usr.bin/gcc3/backend/Makefile : 1.11 645 descr 646 ra-colorize.c causes a whole spew of unreferenced .L* local 647 symbols. using -O0 (or even -O2 reportedly) avoids the problem. 648 Note this has been fixed in 3.3.3 at least on m68k, 649 but it hasn't been confirmed on sun2/m68000. 650 (it's too slow even on emulator and unlikely to build 651 toolchains on sun2 with its maximum 4MB RAM) 652 kcah 653 654port sparc64 655 656 hack disable optimzations for uvm_bio.c on 32 bit kernels 657 cdate Sun Mar 21 14:14:04 MET 2004 658 who martin 659 file sys/arch/sparc64/conf/Makefile.sparc64 : 1.53-1.54 660 file sys/arch/sparc64/conf/files.sparc64 : 1.93 661 descr 662 The sparc compiler miscompiles uvm_bio.c when using 663 any optimization. This results in ubc_release panics. 664 kcah 665 666port macppc 667 668 hack remove inline from rotate_{left,right} 669 cdate Tue Feb 22 13:43:25 EST 2005 670 who christos 671 file src/dist/bind/lib/dns/rbt.c 672 descr 673 The macppc gcc-3.3 compiler miscompiles rbt.c when these 674 functions are inlined. The error is: 675 .* named[368]: rbt.c:1584: INSIST(child != (void *)0) >failed 676 .* named[368]: exiting (due to assertion failure) 677 This is reportedly fixed in gcc-3.4 678 kcah 679 680port hppa 681 682 hack hppa-gcc-3.3.3/grep/dfa.c 683 cdate Sun Aug 8 08:34:32 PDT 2004 684 who chs 685 file gnu/usr.bin/grep/grep/Makefile : 1.4 686 descr 687 gcc 3.3.3 generates bad code for dfa.c with -O2, 688 reduce optimization to -O1 to avoid the bug. 689 kcah 690 691 hack hppa-gcc-3.3.3 / make/buf.c 692 cdate Mon May 8 13:02:36 CEST 2006 693 who he 694 file usr.bin/make/Makefile : 1.34 695 descr 696 gcc 3.3.3 nb3 gets an "unrecognized insn" internal 697 compiler error when building this file with -O2, 698 reduce optimization to -O1 to avoid the bug. 699 kcah 700 701 hack hppa boot-from-disk memory corruption 702 cdate Wed May 18 06:56:07 PDT 2005 703 who chs 704 file src/sys/dev/scsipi/scsipiconf.h : 1.98 705 descr 706 There is some bug with DMA on hppa that corrupts scsipi_xfer 707 structures, but it only shows up when booting from disk. 708 For now, we'll add some padding to scsipi_xfer so that 709 the corrupted memory is not otherwise used. 710 kcah 711 712port mips 713 714 hack mips-shared-linker-load-address 715 cdate Fri Oct 7 08:33:10 UTC 2005 716 who simonb 717 file src/sys/kern/exec_elf32.c : 1.107 718 descr 719 With COMPAT_16 or previous enabled (which enables 720 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 721 load and run at address 0. The check to fix this in 722 rev 1.107 only checks the first psection of the ELF 723 executable, which may not be loadable. A more correct 724 fix is to check the first loadable psection instead of 725 just the first psection. 726 kcah 727 728