HACKS revision 1.113
1 # $NetBSD: HACKS,v 1.113 2009/01/11 21:02:36 sketch 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 gcc-strict-aliasing 88 cdate 6 August 2004 89 who junyoung 90 pr 26516 91 file src/usr.sbin/racoon/racoon/Makefile : 1.21 92 descr 93 GCC issues a warning "dereferencing type-punned pointer will break 94 strict-aliasing rules" when compiling 95 crypto/dist/kame/racoon/crypto/openssl.c with -O[23s]. Note that this 96 is due to use of type casting in a non-standard way in the code and 97 not a compiler bug. Once a new release of KAME with a proper fix 98 applied is imported this should be backed out. 99 kcah 100 101 hack gcc4 wrong uninitialized variable 102 mdate 10 May 2006 103 who mrg 104 file bin/ksh/eval.c : 1.6 105 file bin/sh/histedit.c : 1.39 106 file bin/sh/parser.c : 1.60 107 file crypto/dist/heimdal/kdc/524.c : 1.10 108 file crypto/dist/ssh/sftp.c : 1.20 109 file crypto/dist/ssh/ssh-keysign.c : 1.11 110 file dist/ipf/lib/hostname.c : 1.2 111 file dist/ipf/tools/ipmon.c : 1.8 112 file dist/ntp/ntpd/ntp_request.c : 1.4 113 file dist/ntp/ntpd/refclock_shm.c : 1.4 114 file dist/ntp/sntp/timing.c : 1.3 115 file dist/pppd/pppstats/pppstats.c : 1.3 116 file dist/smbfs/lib/smb/rap.c : 1.6 117 file dist/tcpdump/print-zephyr.c : 1.5 118 file distrib/utils/sysinst/aout2elf.c : 1.12 119 file gnu/libexec/uucp/uucico/uucico.c : 1.6 120 file lib/libc/citrus/citrus_csmapper.c : 1.6 121 file lib/libc/citrus/citrus_pivot_factory.c : 1.5 122 file lib/libc/inet/inet_cidr_ntop.c : 1.3 123 file lib/libc/inet/inet_ntop.c : 1.3 124 file lib/libc/stdio/vfwprintf.c : 1.8 125 file libexec/ld.elf_so/arch/m68k/mdreloc.c : 1.20 126 file libexec/ld.elf_so/arch/powerpc/ppc_reloc.c : 1.40 127 file libexec/ld.elf_so/arch/sh3/mdreloc.c : 1.22 128 file libexec/ld.elf_so/arch/sparc/mdreloc.c : 1.39 129 file libexec/ld.elf_so/arch/sparc64/mdreloc.c : 1.39 130 file libexec/ld.elf_so/arch/vax/mdreloc.c : 1.21 131 file libexec/ld.elf_so/arch/x86_64/mdreloc.c : 1.27 132 file sbin/fsck_ext2fs/dir.c : 1.19 133 file sbin/routed/rtquery/rtquery.c : 1.18 134 file sys/arch/amd64/amd64/pmap.c : 1.26 135 file sys/arch/i386/pci/piixpcib.c : 1.4 136 file sys/arch/m68k/m68k/pmap_motorola.c : 1.4 137 file sys/crypto/cast128/cast128.c : 1.9 138 file sys/ddb/db_command.c : 1.86 139 file sys/dev/cardbus/cardbus_map.c : 1.21 140 file sys/dev/fss.c : 1.25 141 file sys/dev/ic/igsfb.c : 1.39 142 file sys/dev/ic/mb86950.c : 1.5 143 file sys/dev/ic/midway.c : 1.71 144 file sys/dev/kttcp.c : 1.18 145 file sys/dev/rasops/rasops_bitops.h : 1.9 146 file sys/dev/pci/cmpci.c : 1.31 147 file sys/dev/pci/machfb.c : 1.45 148 file sys/dev/usb/ohci.c : 1.174 149 file sys/dev/usb/uhci.c : 1.196 150 file sys/dev/rasops/rasops_bitops.h : 1.9 151 file sys/dist/ipf/netinet/ip_nat.c : 1.10 152 file sys/dist/ipf/netinet/ip_rpcb_pxy.c : 1.8 153 file sys/dist/pf/net/pf.c : 1.22 154 file sys/fs/udf/udf_vnops.c : 1.4 155 file sys/kern/kern_sig.c : 1.219 156 file sys/kern/tty.c : 1.181 157 file sys/net/bpf.c : 1.116 158 file sys/net/zlib.c : 1.26 159 file sys/netccitt/if_x25subr.c : 1.37 160 file sys/netinet/in.c : 1.107 161 file sys/netsmb/smb_smb.c : 1.27 162 file sys/netsmb/smb_trantcp.c : 1.22 163 file sys/nfs/nfs_serv.c : 1.108 164 file sys/nfs/nfs_socket.c : 1.129 165 file sys/nfs/nfs_syscalls.c : 1.91 166 file sys/ufs/lfs/lfs_vfsops.c : 1.207 [also (char *)] 167 file usr.bin/ftp/ftp.c : 1.140 168 file usr.bin/find/function.c : 1.54 169 file usr.bin/mail/tty.c : 1.20 170 file usr.bin/msgc/msg_sys.def : 1.33-1.34 171 file usr.bin/nl/nl.c : 1.7 172 file usr.bin/systat/keyboard.c : 1.23 173 file usr.bin/usbhidctl/usbhid.c : 1.29 174 file usr.bin/vi/cl/cl_read.c : 1.5 175 file usr.bin/vi/ex/ex_cscope.c : 1.12 176 file usr.bin/vi/ex/ex_tag.c : 1.19 177 file usr.bin/vi/vi/v_txt.c : 1.15 178 file usr.sbin/altq/altqstat/qdisc_rio.c : 1.4 179 file usr.sbin/cron/do_command.c : 1.19 180 file usr.sbin/timed/timed/slave.c : 1.15 181 descr 182 GCC 4.1 gets many uninitialised variable warnings wrong. We should 183 really audit all the old hacks like this when older compilers are 184 removed from the tree, as many are probably no longer required. 185 The problem is that it does not recognize initialization via function 186 call pointer. I.e. 187 int p; 188 foo(&p); 189 does not mark p as initialized. 190 kcah 191 192 hack gcc4 pointer sign and strict aliasing problems 193 mdate 10 May 2006 194 who mrg 195 file bin/ed/Makefile : 1.33 196 file distrib/utils/sysinst/Makefile.inc : 1.44 197 file distrib/utils/x_dhclient/Makefile : 1.15 198 file games/bcd/Makefile : 1.5 199 file games/dab/Makefile : 1.5 200 file games/larn/Makefile : 1.17 201 file games/pom/Makefile : 1.5 202 file lib/libasn1/Makefile : 1.26 203 file lib/libcrypt/Makefile : 1.17 204 file lib/libgssapi/Makefile : 1.16 205 file lib/libhdb/Makefile : 1.20 206 file lib/libkadm5clnt/Makefile : 1.21 207 file lib/libkadm5srv/Makefile : 1.25 208 file lib/libkrb5/Makefile : 1.35 209 file lib/libssh/Makefile : 1.6 210 file lib/libtelnet/Makefile : 1.26 211 file libexec/getty/Makefile : 1.14 212 file libexec/kadmind/Makefile : 1.19 213 file libexec/kpasswdd/Makefile : 1.14 214 file sbin/atactl/Makefile : 1.3 215 file sbin/cgdconfig/Makefile : 1.7 216 file sbin/clri/Makefile : 1.13 217 file sbin/dkctl/Makefile : 1.4 218 file sbin/dump/Makefile : 1.33 219 file sbin/fdisk/Makefile : 1.35 220 file sbin/fsck_ext2fs/Makefile : 1.11 221 file sbin/fsck_ffs/Makefile : 1.29 222 file sbin/fsdb/Makefile : 1.18 223 file sbin/mount_smbfs/Makefile : 1.4 224 file sbin/newfs/Makefile : 1.30 225 file sbin/newfs_sysvbfs/Makefile : 1.2 226 file sbin/restore/Makefile : 1.23 227 file sbin/veriexecctl/Makefile : 1.11 228 file sys/lib/libsa/Makefile : 1.59 229 file sys/arch/evbarm/adi_brh/brh_machdep.c : 1.24 230 file usr.bin/awk/Makefile : 1.9 231 file usr.bin/crontab/Makefile : 1.24 232 file usr.bin/ctags/Makefile : 1.8 233 file usr.bin/gzip/Makefile : 1.10 234 file usr.bin/ssh/sftp/Makefile : 1.10 235 file usr.bin/ssh/ssh/Makefile : 1.25 236 file usr.bin/vi/build/Makefile : 1.26 237 file usr.bin/telnet/Makefile : 1.40 238 file usr.bin/tn3270/tn3270/Makefile : 1.36 239 file usr.bin/tr/Makefile : 1.4 240 file usr.sbin/amd/amd/Makefile : 1.27 241 file usr.sbin/amd/amq/Makefile : 1.14 242 file usr.sbin/amd/libamu/Makefile : 1.20 243 file usr.sbin/amd/pawd/Makefile : 1.5 244 file usr.sbin/bind/Makefile.inc : 1.22 245 file usr.sbin/bind/libdns/Makefile : 1.3 246 file usr.sbin/bind/named/Makefile : 1.17 247 file usr.sbin/bootp/bootptest/Makefile : 1.2 248 file usr.sbin/chrtbl/Makefile : 1.6 249 file usr.sbin/cron/Makefile : 1.12 250 file usr.sbin/dhcp/Makefile.inc : 1.20 251 file usr.sbin/dumplfs/Makefile : 1.11 252 file usr.sbin/hprop/Makefile : 1.13 253 file usr.sbin/installboot/Makefile : 1.35 254 file usr.sbin/ipf/ipftest/Makefile : 1.32 255 file usr.sbin/isdn/isdnd/Makefile : 1.6 256 file usr.sbin/isdn/isdnmonitor/Makefile : 1.3 257 file usr.sbin/isdn/isdntel/Makefile : 1.2 258 file usr.sbin/isdn/isdntrace/Makefile : 126 259 file usr.sbin/mopd/common/Makefile : 1.10 260 file usr.sbin/mopd/mopd/Makefile : 1.9 261 file usr.sbin/mopd/mopprobe/Makefile : 1.7 262 file usr.sbin/makefs/Makefile : 1.17 263 file usr.sbin/mscdlabel/Makefile : 1.5 264 file usr.sbin/pkg_install/add/Makefile : 1.7 265 file usr.sbin/pkg_install/create/Makefile : 1.5 266 file usr.sbin/pkg_install/lib/Makefile : 1.28 267 file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11 268 file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5 269 file usr.sbin/pppd/Makefile.inc : 1.3 270 file usr.sbin/pppd/pppd/Makefile : 1.38 271 file usr.sbin/rarpd/Makefile : 1.10 272 file usr.sbin/rbootd/Makefile : 1.10 273 file usr.sbin/rpc.pcnfsd/Makefile : 1.17 274 file usr.sbin/rtadvd/Makefile : 1.9 275 file usr.sbin/tcpdump/Makefile : 1.42 276 file usr.sbin/wiconfig/Makefile : 1.3 277 descr 278 GCC 4.1 warns on pointer sign comparision/assignments and lots of 279 code does not conform. For now we use -Wno-pointer-sign and 280 -fno-strict-aliasing. 281 kcah 282 283 hack cross-building hack on Darwin 284 mdate 20 July 2008 285 who agc 286 file src/distrib/common/Makefile.mdset : 1.33 287 descr 288 Darwin has problems with getopt() when used in mdsetimage -v, 289 due to the difference between BSD and libiberty() getopt 290 implementations, more fully described in 291 http://mail-index.netbsd.org/current-users/2008/06/27/msg003242.html 292 and the subsequent thread. For just now, we just have an ugly 293 workaround not to call mdsetimage with the -v argument on Darwin 294 kcah 295 296 hack avoid rebuilding asn1 libraries 297 mdate 03 August 2008 298 who veego 299 file src/crypto/dist/heimdal/lib/asn1/gen.c : 1.10 300 file src/lib/libasn1/Makefile : 1.32 301 file src/lib/libhdb/Makefile : 1.23 302 file src/lib/libgssapi/Makefile : 1.20 303 file src/lib/libhx509/Makefile : 1.3 304 pr 9702 39185 305 descr 306 asn1_compile does not check if generated header files do not have to 307 be rebuild. 308 Generate .hx files and copy it in the Makefiles if they changed. 309 kcah 310 311 hack avoid gcc4 -O1 bug in loop optimize 312 cdate 29 November 2008 313 who tsutsui 314 file src/sbin/ifconfig/Makefile : 1.39 315 pr 40036 40066 316 descr 317 gcc -O1 seems to generate wrong code in loop optimize so that 318 ifconfig lo0 inet6 doesn't return error even if a kernel 319 doesn't have IPv6 support. (see the above PRs for details) 320 For workaround, specify -fno-loop-optimize on m68000, 321 which uses -O1 by default. 322 kcah 323 324 port vax 325 326 hack gcc4/vax ICE 327 cdate 328 who tsutsui 329 file sys/arch/vax/conf/Makefile.vax 330 descr 331 GCC4 on vax gets ICE on compiling sys/ddb/db_command.c. 332 -fno-tree-ter prevents it so add it to COPTS. 333 kcah 334 335 hack gcc4/vax compiler crash 336 cdate Fri Jun 30 22:39:12 PDT 2006 337 who mrg 338 file bin/csh/Makefile : 1.27 339 file lib/i18n_module/UTF7/Makefile : 1.2 340 descr 341 GCC4 on vax crashes. -O0 stops it happening so far... 342 kcah 343 344 hack gcc 2.95/vax doesn't like abort being used as function pointer 345 cdate Tue Dec 13 05:54:50 GMT 2005 346 who jmc 347 file lib/libc/rpc/svc_vc.c 1.15 348 descr 349 Provide a local definition for abort which doesn't include 350 the noreturn attribute which trips up gcc 2.95 on vax. 351 kcah 352 353 hack gcc 2.95/vax doesn't have stdbool.h and gettext needs it 354 cdate Mon May 9 12:16:22 CDT 2005 355 who jmc 356 file gnu/usr.bin/gettext/Makefile.inc.prog 1.5 357 gnu/usr.bin/gettext/libgrep/Makefile 1.3 358 gnu/usr.bin/gettext/libnlspr/Makefile 1.5 359 gnu/usr.bin/gettext/libnlsut/Makefile 1.3 360 descr 361 The latest gettext assumes a C99 environment or at least 362 configure checks to work around this. As we don't use configure 363 provide a stdbool.h for vax builds locally in directories from 364 the template provided by the gettext code. 365 kcah 366 367 hack gcc 2.95/vax cannot handle __builtin_ffs() 368 cdate Fri Aug 23 21:31:15 CEST 2002 369 who ragge 370 file sys/lib/libkern/libkern.h : 1.42 371 descr 372 __builtin_ffs() is ifdef'd away if __vax__. Matt Thomas has 373 added this feature to GCC 3 so it can be removed when switching. 374 kcah 375 376 hack gcc 2.95/vax libbz2 377 mdate 27 Jun 2002 378 who thorpej 379 file lib/libbz2/Makefile 380 descr 381 libbz2 is mis-compiled with optimization with GCC 2.95.3 382 on VAX. -O0 works around this problem. 383 kcah 384 385 hack vax Toolchain bug 386 cdate 28 Mar 2003 387 who he 388 file sys/arch/vax/vax/intvec.S : 1.5 389 descr 390 Workaround for PR toolchain/20924. The assembler apparently 391 tries to range-check byte offsets when it doesn't have 392 sufficient information to make that decision. 393 Workaround uses `brw' instead of `brb' instruction. 394 kcah 395 396 hack vax gcc 2.95.3 -Wuninitialized workarounds 397 cdate 6 Nov 2003 398 who he 399 file sys/dev/bi/if_ni.c : 1.22 400 file sys/arch/vax/vax/ctu.c : 1.20 401 descr 402 Workaround for gcc 2.95.3 failing to detect that certain 403 variables will be initialized; so that this code compiles 404 with -Wuninitialized. Should be reviewed and possibly 405 reverted when gcc 3.3.2 is ready for vax. 406 kcah 407 408 hack vax gcc 2.95.3 structure initialization 409 cdat 13 May 2004 410 who cl 411 file sys/miscfs/kernfs/kernfs_vnops.c : 1.104 412 descr 413 Workaround for gcc 2.95.3 failing to initialize structures 414 and/or unions inside structures using nested designators. 415 Should be reverted when gcc >=3.3.3 is ready for vax. 416 kcah 417 418 hack vax gcc 2.95.3 needs -I. to build nslexer.c 419 cdat 6 Jun 2004 420 who mhitch 421 file lib/libc/arch/vax/Makefile.inc : 1.6 422 descr 423 It appears necessary to add -I. to CPPFLAGS when building 424 nslesxer.c. This may be caused by gcc 2.95.3 being used. 425 Should be reverted when a newer gcc is ready for vax. 426 kcah 427 428 hack vax gcc 2.95.3 doesn't understand "-std=c99" 429 cdat 5 April 2005 430 who tron 431 file src/share/mk/bsd.sys.mk 432 descr 433 We cannot use "-std=c99" for compiler warning level 4 and above 434 because gcc 2.95.3 doesn't support that option. 435 kcah 436 437 hack declare boolean_t in two IPF user-mode programs 438 cdate Tue Mar 7 19:19:20 CET 2006 439 who he 440 file dist/ipf/ipsend/iptests.c : 1.8 441 dist/ipf/ipsend/sock.c : 1.7 442 descr 443 The IPF user-mode programs ipsend and iptest first 444 include <sys/types.h> without _KERNEL defined, and 445 later include <sys/file.h> with _KERNEL defined. 446 This causes a build failure when building for vax, 447 since <sys/device.h> ends up being included without 448 bollean_t being defined by <sys/types.h>. 449 Build failure and further details documented in 450 PR#32907. 451 kcah 452 453 hack pcc 0.9.9 large string literals 454 cdat 8 July 2008 455 who gmcgarry 456 file sys/conf/param.c : 1.58 457 descr 458 Workaround for pcc 0.9.9 not handling large string literals 459 which causes kernels with 'options INCLUDE_CONFIG_FILE' to 460 fail compilation. 461 There is a proposal on the pcc mailing list to stuff config 462 file in ELF section. 463 kcah 464 465 hack xorg warnings 466 cdat 30 July 2008 467 who mrg 468 file external/mit/xorg/lib/libSM/Makefile : 1.2 469 external/mit/xorg/lib/libX11/Makefile.libx11 : 1.2 470 external/mit/xorg/lib/libXext/Makefile : 1.2 471 external/mit/xorg/lib/libXfont/Makefile : 1.2 472 descr 473 Disable several warnings or use -Wno-error across Xorg sources 474 while we get them working 475 kcah 476 477 hack 32 bit time leftovers 478 cdat 11 January 2009 479 who christos 480 file lib/libc/time/localtime.c : 1.41 481 lib/libc/time/zic.c : 1.23 482 descr 483 The timezone compiled files still contain 32 bit time_t 484 quantities. I did not want to version the files because 485 the ``parser'' is too ugly for words. What needs to be 486 done, is to rewrite the parser from scratch also to avoid 487 potential core-dumps from parsing invalid files. 488 kcah 489 490 hack 32 bit time leftovers 491 cdat 11 January 2009 492 who christos 493 file various 494 descr 495 Many filesystem on-disk formats have 32 bit times. 496 kcah 497 498 port arm 499 500 hack gcc-unsigned-compare 501 cdate 09 Mar 2002 502 mdate 18 Mar 2002 503 who bjh21 504 file dist/bind/lib/nameser/ns_parse.c : 1.3 505 file dist/dhcp/minires/ns_parse.c : 1.3 506 file dist/dhcp/omapip/result.c : 1.2 507 file dist/dhcp/server/failover.c : 1.3 508 file gnu/dist/toolchain/bfd/bfd.c : 1.2 509 file gnu/dist/toolchain/bfd/format.c : 1.2 510 file gnu/dist/toolchain/gdb/target.c : 1.2 511 file sys/kern/vfs_subr.c : 1.172 512 descr When checking that a potentially-unsigned enum is >= 0, assign 513 it to an int first. This is necessary to avoid "comparison is 514 always true" warnings with -fshort-enums. Casting to an int 515 really should be enough, but turns out not to be. 516 kcah 517 518 519 port sh3 520 521 hack gcc4-sh3-bz2 522 cdate Sun May 21 03:34:57 UTC 2006 523 mdate Fri May 16 13:13:00 UTC 2008 524 who mrg, tsutsui 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 529 -fno-loop-optimize. 530 kcah 531 532 533 port m68000 534 535 hack gcc4-m68000 536 cdate Fri Feb 8 10:29:37 PST 2008 537 mdate Sun May 4 15:37:19 UTC 2008 538 who mrg, tsutsui 539 file rescue/Makefile : 1.21 540 file sbin/dump_lfs/Makefile : 1.9 541 file sbin/fsck_ffs/Makefile : 1.35 542 file sbin/fsdb/Makefile : 1.22 543 file share/mk/sys.mk : 1.96 544 file usr.sbin/ndbootd/Makefile : 1.5 545 descr 546 Several internal compiler errors with gcc -O1 547 around 64bit integer arithmetic. 548 This hack uses -O1 and adds some -fno-tree-foo options 549 to avoid the problem. 550 This might be related with GCC Bugzilla Bug 32424. 551 kcah 552 553 554 port sparc64 555 556 hack disable optimzations for uvm_bio.c on 32 bit kernels 557 cdate Sun Mar 21 14:14:04 MET 2004 558 who martin 559 file sys/arch/sparc64/conf/Makefile.sparc64 : 1.53-1.54 560 file sys/arch/sparc64/conf/files.sparc64 : 1.93 561 descr 562 The sparc compiler miscompiles uvm_bio.c when using 563 any optimization. This results in ubc_release panics. 564 kcah 565 566 port mips 567 568 hack mips-shared-linker-load-address 569 cdate Fri Oct 7 08:33:10 UTC 2005 570 who simonb 571 file src/sys/kern/exec_elf32.c : 1.107 572 descr 573 With COMPAT_16 or previous enabled (which enables 574 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 575 load and run at address 0. The check to fix this in 576 rev 1.107 only checks the first psection of the ELF 577 executable, which may not be loadable. A more correct 578 fix is to check the first loadable psection instead of 579 just the first psection. 580 kcah 581 582 hack mips-duplicate-ras-end-label 583 cdate Sat Sep 2 23:29:42 2006 584 who martin 585 file src/regress/sys/kern/ras/ras3/Makefile : 1.3 586 descr 587 Add -fno-reorder-blocks to CFLAGS to avoid duplicate 588 labels by duplicated __asm output from RAS_END() 589 macro. 590 kcah 591 592 hack mips-mcount-assembler-warning 593 cdate Tue Jul 29 14:16:52 UTC 2008 594 who lukem 595 file src/lib/libc/gmon/Makefile.inc : 1.8 596 descr 597 Workaround for PR port-mips/39192. 598 common/lib/libc/gmon/mcount.c generates a (fatal) 599 assembler warning on MIPS: 600 Warning: No .cprestore pseudo-op used in PIC code 601 Add COPTS.count.c+=-Wa,--no-warn to avoid -Wa,--fatal-warnings 602 kcah 603 604 port i386 605 606 hack use volatile intermediate variable to enforce rounding 607 cdate Tue Aug 1 22:15:55 MEST 2006 608 who drochner 609 file src/lib/libm/src/lrintf.c : 1.4 610 file src/lib/libm/src/s_rintf.c : 1.8 611 descr 612 gcc-4 does subsequent operations on "float" values within 613 the i387 FPU without rounding the intermediate results 614 kcah 615 616 port powerpc 617 618 hack avoid using __builtin_return_address(0) because it fails in 619 Xorg's module loader 620 cdate Sat Sep 27 03:52:05 UTC 2008 621 who macallan 622 file src/libexec/ld.elf_so/rtld.c : 1.121 623 descr 624 workaround for PR port-macppc/37812 625 kcah 626 627
Indexes created Wed Nov 05 19:10:08 GMT 2025