HACKS revision 1.91.2.4
1 # $NetBSD: HACKS,v 1.91.2.4 2012/03/17 19:40:41 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 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 Thu Sep 25 22:20:08 CEST 2008 324 who bouyer 325 file x11/Xserver/os/Makefile : 1.14.4.1 326 file x11/bin/lbxproxy/Makefile : 1.6.12.1 327 descr 328 GCC4 on vax crashes. -O0 stops it happening so far... 329 kcah 330 331 hack gcc4/vax compiler crash 332 cdate Fri Jun 30 22:39:12 PDT 2006 333 who mrg 334 file bin/csh/Makefile : 1.27 335 file lib/i18n_module/UTF7/Makefile : 1.2 336 descr 337 GCC4 on vax crashes. -O0 stops it happening so far... 338 kcah 339 340 hack gcc 2.95/vax doesn't like abort being used as function pointer 341 cdate Tue Dec 13 05:54:50 GMT 2005 342 who jmc 343 file lib/libc/rpc/svc_vc.c 1.15 344 descr 345 Provide a local definition for abort which doesn't include 346 the noreturn attribute which trips up gcc 2.95 on vax. 347 kcah 348 349 hack gcc 2.95/vax doesn't have stdbool.h and gettext needs it 350 cdate Mon May 9 12:16:22 CDT 2005 351 who jmc 352 file gnu/usr.bin/gettext/Makefile.inc.prog 1.5 353 gnu/usr.bin/gettext/libgrep/Makefile 1.3 354 gnu/usr.bin/gettext/libnlspr/Makefile 1.5 355 gnu/usr.bin/gettext/libnlsut/Makefile 1.3 356 descr 357 The latest gettext assumes a C99 environment or at least 358 configure checks to work around this. As we don't use configure 359 provide a stdbool.h for vax builds locally in directories from 360 the template provided by the gettext code. 361 kcah 362 363 hack gcc 2.95/vax cannot handle __builtin_ffs() 364 cdate Fri Aug 23 21:31:15 CEST 2002 365 who ragge 366 file sys/lib/libkern/libkern.h : 1.42 367 descr 368 __builtin_ffs() is ifdef'd away if __vax__. Matt Thomas has 369 added this feature to GCC 3 so it can be removed when switching. 370 kcah 371 372 hack gcc-vax-libbz2 373 mdate 27 Jun 2002 374 who thorpej 375 file lib/libbz2/Makefile 376 descr 377 libbz2 is mis-compiled with optimization with GCC 2.95.3 378 on VAX. -O0 works around this problem. 379 kcah 380 381 hack vax Toolchain bug 382 cdate 28 Mar 2003 383 who he 384 file sys/arch/vax/vax/intvec.S : 1.5 385 descr 386 Workaround for PR toolchain/20924. The assembler apparently 387 tries to range-check byte offsets when it doesn't have 388 sufficient information to make that decision. 389 Workaround uses `brw' instead of `brb' instruction. 390 kcah 391 392 hack vax gcc 2.95.3 -Wuninitialized workarounds 393 cdate 6 Nov 2003 394 who he 395 file sys/dev/bi/if_ni.c : 1.22 396 file sys/arch/vax/vax/ctu.c : 1.20 397 descr 398 Workaround for gcc 2.95.3 failing to detect that certain 399 variables will be initialized; so that this code compiles 400 with -Wuninitialized. Should be reviewed and possibly 401 reverted when gcc 3.3.2 is ready for vax. 402 kcah 403 404 hack vax gcc 2.95.3 structure initialization 405 cdat 13 May 2004 406 who cl 407 file sys/miscfs/kernfs/kernfs_vnops.c : 1.104 408 descr 409 Workaround for gcc 2.95.3 failing to initialize structures 410 and/or unions inside structures using nested designators. 411 Should be reverted when gcc >=3.3.3 is ready for vax. 412 kcah 413 414 hack vax gcc 2.95.3 needs -I. to build nslexer.c 415 cdat 6 Jun 2004 416 who mhitch 417 file lib/libc/arch/vax/Makefile.inc : 1.6 418 descr 419 It appears necessary to add -I. to CPPFLAGS when building 420 nslesxer.c. This may be caused by gcc 2.95.3 being used. 421 Should be reverted when a newer gcc is ready for vax. 422 kcah 423 424 hack vax gcc 2.95.3 doesn't understand "-std=c99" 425 cdat 5 April 2005 426 who tron 427 file src/share/mk/bsd.sys.mk 428 descr 429 We cannot use "-std=c99" for compiler warning level 4 and above 430 because gcc 2.95.3 doesn't support that option. 431 kcah 432 433 hack declare boolean_t in two IPF user-mode programs 434 cdate Tue Mar 7 19:19:20 CET 2006 435 who he 436 file dist/ipf/ipsend/iptests.c : 1.8 437 dist/ipf/ipsend/sock.c : 1.7 438 descr 439 The IPF user-mode programs ipsend and iptest first 440 include <sys/types.h> without _KERNEL defined, and 441 later include <sys/file.h> with _KERNEL defined. 442 This causes a build failure when building for vax, 443 since <sys/device.h> ends up being included without 444 bollean_t being defined by <sys/types.h>. 445 Build failure and further details documented in 446 PR#32907. 447 kcah 448 449 port 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/toolchain/bfd/bfd.c : 1.2 460 file gnu/dist/toolchain/bfd/format.c : 1.2 461 file gnu/dist/toolchain/gdb/target.c : 1.2 462 file sys/kern/vfs_subr.c : 1.172 463 descr When checking that a potentially-unsigned enum is >= 0, assign 464 it to an int first. This is necessary to avoid "comparison is 465 always true" warnings with -fshort-enums. Casting to an int 466 really should be enough, but turns out not to be. 467 kcah 468 469 hack gcc 3.3.2/arm sys/kern/uipc_socket.c 470 cdate Tue Oct 28 18:02:16 GMT 2003 471 who skrll 472 pr 23044 473 file sys/arch/arm/conf/Makefile.arm : 1.19 474 descr 475 Performing a build.sh tools on a CATS with NFS mounted 476 obj and src directories results in "panic: receive 1" 477 The hack is to compile sys/kern/uipc_socket.c with 478 -fno-strict-aliasing 479 kcah 480 481 482 port pc532 483 484 hack egcs-pc532-ip6_mroute 485 cdate 09 Jul 2002 486 who simonb 487 file sys/arch/pc532/conf/Makefile.pc532 : 1.70 488 file sys/arch/pc532/conf/files.pc532 : 1.47 489 descr 490 egcs 1.1.2 gets an "internal error--insn does not satisfy its 491 constraints" error compiling ip6_mroute.c with -O2 or greater. 492 -O1 works around this problem. 493 kcah 494 495 hack gcc-pc532-duffs_device 496 cdate Mon Oct 27 07:23:05 UTC 2003 497 who simonb 498 file sys/arch/pc532/conf/Makefile.pc532 : 1.71 499 file sys/arch/pc532/conf/files.pc532 : 1.52 500 pr GCC PR optimization/5230 501 descr 502 gcc incorrectly gives an "unreachable code at beginning of 503 switch statement" for a Duff's device construct in 504 arch/pc532/dev/ncr.c. There is no way to disable just this 505 warning, so -Wno-error is turned on for this file. 506 kcah 507 508 hack gcc332-cppmacro-ice 509 cdate Sun Dec 7 12:48:33 UTC 2003 510 who simonb 511 file gnu/usr.bin/gcc3/libcpp/Makefile : 1.2 512 descr 513 gcc 3.3.2 gets an ICE when compiling cppmacro.c with -O2. 514 The hack is to use -O1 for this file. Fixed in gcc 515 -current mainline, unable to work out where the fix is 516 right now. 517 kcah 518 519 520 port sh3 521 522 hack gcc4-sh3-bz2 523 mdate 20 May 2006 524 who mrg 525 file lib/libbz2/Makefile : 1.10 526 descr 527 The in-tree GCC 4.1-based compiler generated too-far 528 pc-relative addresses. Hack is to build with -O0. 529 kcah 530 531 532 port sun2 533 534 hack gcc 3.3.2/mdsetimage 535 cdate Tue Oct 28 18:43:05 EST 2003 536 who fredette 537 file gnu/usr.sbin/mdsetimage/Makefile : 1.15 538 descr 539 mdsetimage.c causes cc1 to barf for as-yet unknown reasons. 540 this hack uses -O0 to avoid the problem. 541 kcah 542 543 hack gcc 3.3.2/installboot/ffs.c 544 cdate Tue Oct 28 18:43:05 EST 2003 545 who fredette 546 file usr.sbin/installboot/Makefile : 1.26 547 descr 548 ffs.c causes cc1 to barf for as-yet unknown reasons. this 549 hack uses -O0 to avoid the problem. 550 kcah 551 552 hack gcc 4.1.1/fsck_ffs/pass1.c 553 cdate Fri Jun 23 10:30:25 PDT 2006 554 who mrg 555 file sbin/fsck_ffs/Makefile : 1.30 556 file sbin/fsdb/Makefile : 1.19 557 file sbin/dump_lfs/Makefile : 1.9 558 file usr.sbin/ndbootd/Makefile : 1.2 559 descr 560 pass1.c causes cc1 to barf for as-yet unknown reasons. this 561 hack uses -O0 to avoid the problem. (these all seem to be the 562 same problem.) 563 kcah 564 565 566 port m68000 567 568 hack gcc 3.3.2/gcc/ra-colorize.c 569 cdate Wed Nov 5 11:03:13 EST 2003 570 who mrg 571 file gnu/usr.bin/gcc3/backend/Makefile : 1.11 572 descr 573 ra-colorize.c causes a whole spew of unreferenced .L* local 574 symbols. using -O0 (or even -O2 reportedly) avoids the problem. 575 Note this has been fixed in 3.3.3 at least on m68k, 576 but it hasn't been confirmed on sun2/m68000. 577 (it's too slow even on emulator and unlikely to build 578 toolchains on sun2 with its maximum 4MB RAM) 579 kcah 580 581 port macppc 582 583 hack remove inline from rotate_{left,right} 584 cdate Tue Feb 22 13:43:25 EST 2005 585 who christos 586 file src/dist/bind/lib/dns/rbt.c 587 descr 588 The macppc gcc-3.3 compiler miscompiles rbt.c when these 589 functions are inlined. The error is: 590 .* named[368]: rbt.c:1584: INSIST(child != (void *)0) >failed 591 .* named[368]: exiting (due to assertion failure) 592 This is reportedly fixed in gcc-3.4 593 kcah 594 595 port mips 596 597 hack mips-shared-linker-load-address 598 cdate Fri Oct 7 08:33:10 UTC 2005 599 who simonb 600 file src/sys/kern/exec_elf32.c : 1.107 601 descr 602 With COMPAT_16 or previous enabled (which enables 603 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 604 load and run at address 0. The check to fix this in 605 rev 1.107 only checks the first psection of the ELF 606 executable, which may not be loadable. A more correct 607 fix is to check the first loadable psection instead of 608 just the first psection. 609 kcah 610 611 hack mips-duplicate-ras-end-label 612 cdate Sat Sep 2 23:29:42 2006 613 who martin 614 file src/regres/sys/kern/ras/ras3/Makefile : 1.3 615 descr 616 Add -fno-reorder-blocks to CFLAGS to avoid duplicate 617 labels by duplicated __asm output from RAS_END() 618 macro. 619 kcah 620 621 port i386 622 623 hack minus-Os-broken-machdep-c 624 cdate Mon Jul 31 13:09:01 EDT 2006 625 who christos 626 file src/sys/arch/machdep.c : 1.576 627 descr 628 gcc-4 miscompiles this file with -Os and the resulting 629 kernel resets as reported in PR33725 630 kcah 631 632 hack use volatile intermediate variable to enforce rounding 633 cdate Tue Aug 1 22:15:55 MEST 2006 634 who drochner 635 file src/lib/libm/src/lrintf.c : 1.4 636 file src/lib/libm/src/s_rintf.c : 1.8 637 descr 638 gcc-4 does subsequent operations on "float" values within 639 the i387 FPU without rounding the intermediate results 640 kcah 641
Indexes created Wed Nov 05 19:10:08 GMT 2025