HACKS revision 1.91.2.2
1 # $NetBSD: HACKS,v 1.91.2.2 2007/07/19 14:38:17 liamjfoy 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 30 hack netstat ieee1394 address printing. 31 mdate 14 Nov 2000 32 who matt 33 file lib/libc/net/getnameinfo.c : 1.32 : 497 : 503 34 descr 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. 38 kcah 39 40 hack xterm vs. libterm 41 mdate 01 Aug 2000 42 who jdc 43 file xsrc/xc/programs/xterm/main.c : 1.2 : 3609 : 3614 44 pr 10383 45 descr 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. 51 kcah 52 53 hack wi-at-big-endian-bus 54 cdate 15 Mar 2002 55 who martin 56 file dev/ic/wireg.h 57 descr 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. 61 kcah 62 63 hack specific knowledge of colours in curses code 64 cdate Sun Apr 6 11:05:24 BST 2003 65 who jdc 66 file lib/libcurses/color.c : r1.24 67 descr 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 72 kcah 73 74 hack Compensation for differing types of LINUX_USRSTACK and USRSTACK 75 cdate 21 Aug 2003 76 who he 77 file sys/miscfs/procfs/procfs_linux.c : 1.14 78 descr 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. 85 kcah 86 87 hack GCC2 isn't C99 88 cdate 5 December 2003 89 who mrg 90 file gnu/dist/binutils/ld/ldlex.c: r1.2 91 descr 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. 97 kcah 98 99 hack gcc-strict-aliasing 100 cdate 6 August 2004 101 who junyoung 102 pr 26516 103 file src/usr.sbin/racoon/racoon/Makefile : 1.21 104 descr 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. 111 kcah 112 113 hack gcc 3.3.3 wrong uninitialised variable 114 mdate 12 May 2006 115 who he 116 file usr.bin/msgc/msg_sys.def : 1.33-1.34 117 file distrib/utils/sysinst/aout2elf.c : 1.11 118 descr 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. 123 kcah 124 125 hack gcc4 wrong uninitialized variable 126 mdate 10 May 2006 127 who mrg 128 file bin/ksh/eval.c : 1.6 129 file bin/sh/histedit.c : 1.39 130 file bin/sh/parser.c : 1.60 131 file bin/systrace/systrace.c : 1.33 132 file crypto/dist/heimdal/kdc/524.c : 1.10 133 file crypto/dist/ssh/sftp.c : 1.20 134 file crypto/dist/ssh/ssh-keysign.c : 1.11 135 file dist/ipf/lib/hostname.c : 1.2 136 file dist/ipf/tools/ipmon.c : 1.8 137 file dist/ntp/ntpd/ntp_request.c : 1.4 138 file dist/ntp/ntpd/refclock_shm.c : 1.4 139 file dist/ntp/sntp/timing.c : 1.3 140 file dist/pppd/pppstats/pppstats.c : 1.3 141 file dist/smbfs/lib/smb/rap.c : 1.6 142 file dist/tcpdump/print-zephyr.c : 1.5 143 file distrib/utils/sysinst/aout2elf.c : 1.12 144 file gnu/libexec/uucp/uucico/uucico.c : 1.6 145 file lib/libc/citrus/citrus_csmapper.c : 1.6 146 file lib/libc/citrus/citrus_pivot_factory.c : 1.5 147 file lib/libc/inet/inet_cidr_ntop.c : 1.3 148 file lib/libc/inet/inet_ntop.c : 1.3 149 file lib/libc/stdio/vfwprintf.c : 1.8 150 file libexec/ld.elf_so/arch/m68k/mdreloc.c : 1.20 151 file libexec/ld.elf_so/arch/powerpc/ppc_reloc.c : 1.40 152 file libexec/ld.elf_so/arch/sh3/mdreloc.c : 1.22 153 file libexec/ld.elf_so/arch/sparc/mdreloc.c : 1.39 154 file libexec/ld.elf_so/arch/sparc64/mdreloc.c : 1.39 155 file libexec/ld.elf_so/arch/vax/mdreloc.c : 1.21 156 file libexec/ld.elf_so/arch/x86_64/mdreloc.c : 1.27 157 file sbin/fsck_ext2fs/dir.c : 1.19 158 file sbin/routed/rtquery/rtquery.c : 1.18 159 file sys/arch/amd64/amd64/pmap.c : 1.26 160 file sys/arch/i386/pci/piixpcib.c : 1.4 161 file sys/arch/m68k/m68k/pmap_motorola.c : 1.4 162 file sys/crypto/cast128/cast128.c : 1.9 163 file sys/ddb/db_command.c : 1.86 164 file sys/dev/cardbus/cardbus_map.c : 1.21 165 file sys/dev/fss.c : 1.25 166 file sys/dev/ic/igsfb.c : 1.39 167 file sys/dev/ic/mb86950.c : 1.5 168 file sys/dev/ic/midway.c : 1.71 169 file sys/dev/kttcp.c : 1.18 170 file sys/dev/rasops/rasops_bitops.h : 1.9 171 file sys/dev/pci/cmpci.c : 1.31 172 file sys/dev/pci/machfb.c : 1.45 173 file sys/dev/usb/ohci.c : 1.174 174 file sys/dev/usb/uhci.c : 1.196 175 file sys/dev/rasops/rasops_bitops.h : 1.9 176 file sys/dist/ipf/netinet/ip_nat.c : 1.10 177 file sys/dist/ipf/netinet/ip_rpcb_pxy.c : 1.8 178 file sys/dist/pf/net/pf.c : 1.22 179 file sys/fs/udf/udf_vnops.c : 1.4 180 file sys/kern/kern_sig.c : 1.219 181 file sys/kern/tty.c : 1.181 182 file sys/net/bpf.c : 1.116 183 file sys/net/zlib.c : 1.26 184 file sys/netccitt/if_x25subr.c : 1.37 185 file sys/netinet/in.c : 1.107 186 file sys/netsmb/smb_smb.c : 1.27 187 file sys/netsmb/smb_trantcp.c : 1.22 188 file sys/nfs/nfs_serv.c : 1.108 189 file sys/nfs/nfs_socket.c : 1.129 190 file sys/nfs/nfs_syscalls.c : 1.91 191 file sys/ufs/lfs/lfs_vfsops.c : 1.207 [also (char *)] 192 file usr.bin/ftp/ftp.c : 1.140 193 file usr.bin/find/function.c : 1.54 194 file usr.bin/mail/tty.c : 1.20 195 file usr.bin/nl/nl.c : 1.7 196 file usr.bin/systat/keyboard.c : 1.23 197 file usr.bin/usbhidctl/usbhid.c : 1.29 198 file usr.bin/vi/cl/cl_read.c : 1.5 199 file usr.bin/vi/ex/ex_cscope.c : 1.12 200 file usr.bin/vi/ex/ex_tag.c : 1.19 201 file usr.bin/vi/vi/v_txt.c : 1.15 202 file usr.sbin/altq/altqstat/qdisc_rio.c : 1.4 203 file usr.sbin/cron/do_command.c : 1.19 204 file usr.sbin/timed/timed/slave.c : 1.15 205 descr 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. 214 kcah 215 216 hack gcc4 pointer sign and strict aliasing problems 217 mdate 10 May 2006 218 who mrg 219 file bin/ed/Makefile : 1.33 220 file bin/systrace/Makefile : 1.12 221 file distrib/utils/sysinst/Makefile.inc : 1.44 222 file distrib/utils/x_dhclient/Makefile : 1.15 223 file games/bcd/Makefile : 1.5 224 file games/dab/Makefile : 1.5 225 file games/larn/Makefile : 1.17 226 file games/pom/Makefile : 1.5 227 file lib/libasn1/Makefile : 1.26 228 file lib/libcrypt/Makefile : 1.17 229 file lib/libgssapi/Makefile : 1.16 230 file lib/libhdb/Makefile : 1.20 231 file lib/libkadm5clnt/Makefile : 1.21 232 file lib/libkadm5srv/Makefile : 1.25 233 file lib/libkrb5/Makefile : 1.35 234 file lib/libssh/Makefile : 1.6 235 file lib/libtelnet/Makefile : 1.26 236 file libexec/getty/Makefile : 1.14 237 file libexec/kadmind/Makefile : 1.19 238 file libexec/kpasswdd/Makefile : 1.14 239 file sbin/atactl/Makefile : 1.3 240 file sbin/cgdconfig/Makefile : 1.7 241 file sbin/clri/Makefile : 1.13 242 file sbin/dkctl/Makefile : 1.4 243 file sbin/dump/Makefile : 1.33 244 file sbin/fdisk/Makefile : 1.35 245 file sbin/fsck_ext2fs/Makefile : 1.11 246 file sbin/fsck_ffs/Makefile : 1.29 247 file sbin/fsdb/Makefile : 1.18 248 file sbin/mount_smbfs/Makefile : 1.4 249 file sbin/newfs/Makefile : 1.30 250 file sbin/newfs_sysvbfs/Makefile : 1.2 251 file sbin/restore/Makefile : 1.23 252 file sbin/veriexecctl/Makefile : 1.11 253 file sys/lib/libsa/Makefile : 1.59 254 file sys/arch/evbarm/adi_brh/brh_machdep.c : 1.24 255 file usr.bin/awk/Makefile : 1.9 256 file usr.bin/crontab/Makefile : 1.24 257 file usr.bin/ctags/Makefile : 1.8 258 file usr.bin/gzip/Makefile : 1.10 259 file usr.bin/ssh/sftp/Makefile : 1.10 260 file usr.bin/ssh/ssh/Makefile : 1.25 261 file usr.bin/vi/build/Makefile : 1.26 262 file usr.bin/telnet/Makefile : 1.40 263 file usr.bin/tn3270/tn3270/Makefile : 1.36 264 file usr.bin/tr/Makefile : 1.4 265 file usr.sbin/amd/amd/Makefile : 1.27 266 file usr.sbin/amd/amq/Makefile : 1.14 267 file usr.sbin/amd/libamu/Makefile : 1.20 268 file usr.sbin/amd/pawd/Makefile : 1.5 269 file usr.sbin/bind/Makefile.inc : 1.22 270 file usr.sbin/bind/libdns/Makefile : 1.3 271 file usr.sbin/bind/named/Makefile : 1.17 272 file usr.sbin/bootp/bootptest/Makefile : 1.2 273 file usr.sbin/chrtbl/Makefile : 1.6 274 file usr.sbin/cron/Makefile : 1.12 275 file usr.sbin/dhcp/Makefile.inc : 1.20 276 file usr.sbin/dumplfs/Makefile : 1.11 277 file usr.sbin/hprop/Makefile : 1.13 278 file usr.sbin/installboot/Makefile : 1.35 279 file usr.sbin/ipf/ipftest/Makefile : 1.32 280 file usr.sbin/isdn/isdnd/Makefile : 1.6 281 file usr.sbin/isdn/isdnmonitor/Makefile : 1.3 282 file usr.sbin/isdn/isdntel/Makefile : 1.2 283 file usr.sbin/isdn/isdntrace/Makefile : 126 284 file usr.sbin/mopd/common/Makefile : 1.10 285 file usr.sbin/mopd/mopd/Makefile : 1.9 286 file usr.sbin/mopd/mopprobe/Makefile : 1.7 287 file usr.sbin/makefs/Makefile : 1.17 288 file usr.sbin/mscdlabel/Makefile : 1.5 289 file usr.sbin/pkg_install/add/Makefile : 1.7 290 file usr.sbin/pkg_install/create/Makefile : 1.5 291 file usr.sbin/pkg_install/lib/Makefile : 1.28 292 file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11 293 file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5 294 file usr.sbin/pppd/Makefile.inc : 1.3 295 file usr.sbin/pppd/pppd/Makefile : 1.38 296 file usr.sbin/rarpd/Makefile : 1.10 297 file usr.sbin/rbootd/Makefile : 1.10 298 file usr.sbin/rpc.pcnfsd/Makefile : 1.17 299 file usr.sbin/rtadvd/Makefile : 1.9 300 file usr.sbin/tcpdump/Makefile : 1.42 301 file usr.sbin/wiconfig/Makefile : 1.3 302 descr 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. 306 kcah 307 308 hack rbus resource allocation work around 309 cdate 10 May 2007 310 who jnemeth 311 file src/sys/dev/pcmcia/aic_pcmcia.c : 1.35 312 pr 26909 31245 313 descr 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. 318 kcah 319 320 port 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 439 440 port 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 471 472 473 port 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 509 510 511 port 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 521 522 523 port 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 555 556 557 port 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 571 572 port sparc64 573 574 hack disable optimzations for uvm_bio.c on 32 bit kernels 575 cdate Sun Mar 21 14:14:04 MET 2004 576 who martin 577 file sys/arch/sparc64/conf/Makefile.sparc64 : 1.53-1.54 578 file sys/arch/sparc64/conf/files.sparc64 : 1.93 579 descr 580 The sparc compiler miscompiles uvm_bio.c when using 581 any optimization. This results in ubc_release panics. 582 kcah 583 584 port macppc 585 586 hack remove inline from rotate_{left,right} 587 cdate Tue Feb 22 13:43:25 EST 2005 588 who christos 589 file src/dist/bind/lib/dns/rbt.c 590 descr 591 The macppc gcc-3.3 compiler miscompiles rbt.c when these 592 functions are inlined. The error is: 593 .* named[368]: rbt.c:1584: INSIST(child != (void *)0) >failed 594 .* named[368]: exiting (due to assertion failure) 595 This is reportedly fixed in gcc-3.4 596 kcah 597 598 port mips 599 600 hack mips-shared-linker-load-address 601 cdate Fri Oct 7 08:33:10 UTC 2005 602 who simonb 603 file src/sys/kern/exec_elf32.c : 1.107 604 descr 605 With COMPAT_16 or previous enabled (which enables 606 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 607 load and run at address 0. The check to fix this in 608 rev 1.107 only checks the first psection of the ELF 609 executable, which may not be loadable. A more correct 610 fix is to check the first loadable psection instead of 611 just the first psection. 612 kcah 613 614 hack mips-duplicate-ras-end-label 615 cdate Sat Sep 2 23:29:42 2006 616 who martin 617 file src/regres/sys/kern/ras/ras3/Makefile : 1.3 618 descr 619 Add -fno-reorder-blocks to CFLAGS to avoid duplicate 620 labels by duplicated __asm output from RAS_END() 621 macro. 622 kcah 623 624 port i386 625 626 hack minus-Os-broken-machdep-c 627 cdate Mon Jul 31 13:09:01 EDT 2006 628 who christos 629 file src/sys/arch/machdep.c : 1.576 630 descr 631 gcc-4 miscompiles this file with -Os and the resulting 632 kernel resets as reported in PR33725 633 kcah 634 635 hack use volatile intermediate variable to enforce rounding 636 cdate Tue Aug 1 22:15:55 MEST 2006 637 who drochner 638 file src/lib/libm/src/lrintf.c : 1.4 639 file src/lib/libm/src/s_rintf.c : 1.8 640 descr 641 gcc-4 does subsequent operations on "float" values within 642 the i387 FPU without rounding the intermediate results 643 kcah 644
Indexes created Thu Aug 13 00:25:44 UTC 2026