HACKS revision 1.76
1 # $NetBSD: HACKS,v 1.76 2006/05/25 09:05:40 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 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 uninitialised 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/crypto/cast128/cast128.c : 1.9 161 file sys/ddb/db_command.c : 1.86 162 file sys/dev/cardbus/cardbus_map.c : 1.21 163 file sys/dev/fss.c : 1.25 164 file sys/dev/ic/igsfb.c : 1.39 165 file sys/dev/ic/mb86950.c : 1.5 166 file sys/dev/ic/midway.c : 1.71 167 file sys/dev/kttcp.c : 1.18 168 file sys/dev/rasops/rasops_bitops.h : 1.9 169 file sys/dev/pci/cmpci.c : 1.31 170 file sys/dev/pci/machfb.c : 1.45 171 file sys/dev/usb/ohci.c : 1.174 172 file sys/dev/usb/uhci.c : 1.196 173 file sys/dev/rasops/rasops_bitops.h : 1.9 174 file sys/dist/ipf/netinet/ip_nat.c : 1.10 175 file sys/dist/ipf/netinet/ip_rpcb_pxy.c : 1.8 176 file sys/dist/pf/net/pf.c : 1.22 177 file sys/fs/udf/udf_vnops.c : 1.4 178 file sys/kern/kern_sig.c : 1.219 179 file sys/kern/tty.c : 1.181 180 file sys/net/bpf.c : 1.116 181 file sys/net/zlib.c : 1.26 182 file sys/netccitt/if_x25subr.c : 1.37 183 file sys/netinet/in.c : 1.107 184 file sys/netsmb/smb_smb.c : 1.27 185 file sys/netsmb/smb_trantcp.c : 1.22 186 file sys/nfs/nfs_serv.c : 1.108 187 file sys/nfs/nfs_socket.c : 1.129 188 file sys/nfs/nfs_syscalls.c : 1.91 189 file sys/ufs/lfs/lfs_vfsops.c : 1.207 [also (char *)] 190 file usr.bin/ftp/ftp.c : 1.140 191 file usr.bin/find/function.c : 1.54 192 file usr.bin/mail/tty.c : 1.20 193 file usr.bin/nl/nl.c : 1.7 194 file usr.bin/systat/keyboard.c : 1.23 195 file usr.bin/usbhidctl/usbhid.c : 1.29 196 file usr.bin/vi/cl/cl_read.c : 1.5 197 file usr.bin/vi/ex/ex_cscope.c : 1.12 198 file usr.bin/vi/ex/ex_tag.c : 1.19 199 file usr.bin/vi/vi/v_txt.c : 1.15 200 file usr.sbin/altq/altqstat/qdisc_rio.c : 1.4 201 file usr.sbin/cron/do_command.c : 1.19 202 file usr.sbin/timed/timed/slave.c : 1.15 203 descr 204 GCC 4.1 gets many uninitialised variable warnings wrong. We should 205 really audit all the old hacks like this when older compilers are 206 removed from the tree, as many are probably no longer required. 207 The problem is that it does not recognize initialization via function 208 call pointer. I.e. 209 int p; 210 foo(&p); 211 does not mark p as initialized. 212 kcah 213 214 hack gcc4 pointer sign and strict aliasing problems 215 mdate 10 May 2006 216 who mrg 217 file bin/ed/Makefile : 1.33 218 file bin/systrace/Makefile : 1.12 219 file distrib/utils/sysinst/Makefile.inc : 1.44 220 file games/bcd/Makefile : 1.5 221 file games/dab/Makefile : 1.5 222 file games/larn/Makefile : 1.17 223 file games/pom/Makefile : 1.5 224 file lib/libasn1/Makefile : 1.26 225 file lib/libcrypt/Makefile : 1.17 226 file lib/libgssapi/Makefile : 1.16 227 file lib/libhdb/Makefile : 1.20 228 file lib/libkadm5clnt/Makefile : 1.21 229 file lib/libkadm5srv/Makefile : 1.25 230 file lib/libkrb5/Makefile : 1.35 231 file lib/libssh/Makefile : 1.6 232 file lib/libtelnet/Makefile : 1.26 233 file libexec/getty/Makefile : 1.14 234 file libexec/kadmind/Makefile : 1.19 235 file libexec/kpasswdd/Makefile : 1.14 236 file sbin/atactl/Makefile : 1.3 237 file sbin/cgdconfig/Makefile : 1.7 238 file sbin/clri/Makefile : 1.13 239 file sbin/dkctl/Makefile : 1.4 240 file sbin/dump/Makefile : 1.33 241 file sbin/fdisk/Makefile : 1.35 242 file sbin/fsck_ext2fs/Makefile : 1.11 243 file sbin/fsck_ffs/Makefile : 1.29 244 file sbin/fsdb/Makefile : 1.18 245 file sbin/mount_smbfs/Makefile : 1.4 246 file sbin/newfs/Makefile : 1.30 247 file sbin/newfs_sysvbfs/Makefile : 1.2 248 file sbin/restore/Makefile : 1.23 249 file sbin/veriexecctl/Makefile : 1.11 250 file sys/lib/libsa/Makefile : 1.59 251 file sys/arch/evbarm/adi_brh/brh_machdep.c : 1.24 252 file usr.bin/awk/Makefile : 1.9 253 file usr.bin/crontab/Makefile : 1.24 254 file usr.bin/ctags/Makefile : 1.8 255 file usr.bin/gzip/Makefile : 1.10 256 file usr.bin/ssh/sftp/Makefile : 1.10 257 file usr.bin/ssh/ssh/Makefile : 1.25 258 file usr.bin/vi/build/Makefile : 1.26 259 file usr.bin/telnet/Makefile : 1.40 260 file usr.bin/tn3270/tn3270/Makefile : 1.36 261 file usr.bin/tr/Makefile : 1.4 262 file usr.sbin/amd/amd/Makefile : 1.27 263 file usr.sbin/amd/amq/Makefile : 1.14 264 file usr.sbin/amd/libamu/Makefile : 1.20 265 file usr.sbin/amd/pawd/Makefile : 1.5 266 file usr.sbin/bind/Makefile.inc : 1.22 267 file usr.sbin/bind/libdns/Makefile : 1.3 268 file usr.sbin/bind/named/Makefile : 1.17 269 file usr.sbin/bootp/bootptest/Makefile : 1.2 270 file usr.sbin/chrtbl/Makefile : 1.6 271 file usr.sbin/cron/Makefile : 1.12 272 file usr.sbin/dhcp/Makefile.inc : 1.20 273 file usr.sbin/dumplfs/Makefile : 1.11 274 file usr.sbin/hprop/Makefile : 1.13 275 file usr.sbin/installboot/Makefile : 1.35 276 file usr.sbin/ipf/ipftest/Makefile : 1.32 277 file usr.sbin/isdn/isdnd/Makefile : 1.6 278 file usr.sbin/isdn/isdnmonitor/Makefile : 1.3 279 file usr.sbin/isdn/isdntel/Makefile : 1.2 280 file usr.sbin/isdn/isdntrace/Makefile : 126 281 file usr.sbin/mopd/common/Makefile : 1.10 282 file usr.sbin/mopd/mopd/Makefile : 1.9 283 file usr.sbin/mopd/mopprobe/Makefile : 1.7 284 file usr.sbin/makefs/Makefile : 1.17 285 file usr.sbin/mscdlabel/Makefile : 1.5 286 file usr.sbin/pkg_install/add/Makefile : 1.7 287 file usr.sbin/pkg_install/create/Makefile : 1.5 288 file usr.sbin/pkg_install/lib/Makefile : 1.28 289 file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11 290 file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5 291 file usr.sbin/pppd/Makefile.inc : 1.3 292 file usr.sbin/pppd/pppd/Makefile : 1.38 293 file usr.sbin/rarpd/Makefile : 1.10 294 file usr.sbin/rbootd/Makefile : 1.10 295 file usr.sbin/rpc.pcnfsd/Makefile : 1.17 296 file usr.sbin/rtadvd/Makefile : 1.9 297 file usr.sbin/tcpdump/Makefile : 1.42 298 file usr.sbin/wiconfig/Makefile : 1.3 299 descr 300 GCC 4.1 warns on pointer sign comparision/assignments and lots of 301 code does not conform. For now we use -Wno-pointer-sign and 302 -fno-strict-aliasing. 303 kcah 304 305 port vax 306 307 hack gcc 2.95/vax doesn't like abort being used as function pointer 308 cdate Tue Dec 13 05:54:50 GMT 2005 309 who jmc 310 file lib/libc/rpc/svc_vc.c 1.15 311 descr 312 Provide a local definition for abort which doesn't include 313 the noreturn attribute which trips up gcc 2.95 on vax. 314 315 hack gcc 2.95/vax doesn't have stdbool.h and gettext needs it 316 cdate Mon May 9 12:16:22 CDT 2005 317 who jmc 318 file gnu/usr.bin/gettext/Makefile.inc.prog 1.5 319 gnu/usr.bin/gettext/libgrep/Makefile 1.3 320 gnu/usr.bin/gettext/libnlspr/Makefile 1.5 321 gnu/usr.bin/gettext/libnlsut/Makefile 1.3 322 descr 323 The latest gettext assumes a C99 environment or at least 324 configure checks to work around this. As we don't use configure 325 provide a stdbool.h for vax builds locally in directories from 326 the template provided by the gettext code. 327 328 hack gcc 2.95/vax can't handle __used__ 329 cdate Fri May 6 14:30:53 CDT 2005 330 who jmc 331 file src/lib/libc/gmon/mcount.c 1.17 332 src/usr.bin/config/main.c 1.11 333 descr 334 Recent changes to mark this as __used__ to prevent optimization 335 away on sparc64 don't work on 2.95 vax. Ifdef'd back in the 336 old __unused__ if on vax. 337 338 hack gcc 2.95/vax cannot handle __builtin_ffs() 339 cdate Fri Aug 23 21:31:15 CEST 2002 340 who ragge 341 file sys/lib/libkern/libkern.h : 1.42 342 descr 343 __builtin_ffs() is ifdef'd away if __vax__. Matt Thomas has 344 added this feature to GCC 3 so it can be removed when switching. 345 346 347 hack gcc-vax-libbz2 348 mdate 27 Jun 2002 349 who thorpej 350 file lib/libbz2/Makefile 351 descr 352 libbz2 is mis-compiled with optimization with GCC 2.95.3 353 on VAX. -O0 works around this problem. 354 kcah 355 356 hack gawk 357 mdate 8 Nov 2003 358 who ragge 359 file gnu/usr.bin/gawk/Makefile 360 descr 361 gawk is mis-compiled with optimization with GCC 2.95.3 362 on VAX. -O0 works around this problem. 363 kcah 364 365 hack vax Toolchain bug 366 cdate 28 Mar 2003 367 who he 368 file sys/arch/vax/vax/intvec.S : 1.5 369 descr 370 Workaround for PR toolchain/20924. The assembler apparently 371 tries to range-check byte offsets when it doesn't have 372 sufficient information to make that decision. 373 Workaround uses `brw' instead of `brb' instruction. 374 kcah 375 376 hack vax gcc 2.95.3 -Wuninitialized workarounds 377 cdate 6 Nov 2003 378 who he 379 file sys/dev/bi/if_ni.c : 1.22 380 file sys/arch/vax/vax/ctu.c : 1.20 381 descr 382 Workaround for gcc 2.95.3 failing to detect that certain 383 variables will be initialized; so that this code compiles 384 with -Wuninitialized. Should be reviewed and possibly 385 reverted when gcc 3.3.2 is ready for vax. 386 kcah 387 388 hack vax gcc 2.95.3 structure initialization 389 cdat 13 May 2004 390 who cl 391 file sys/miscfs/kernfs/kernfs_vnops.c : 1.104 392 descr 393 Workaround for gcc 2.95.3 failing to initialize structures 394 and/or unions inside structures using nested designators. 395 Should be reverted when gcc >=3.3.3 is ready for vax. 396 kcah 397 398 hack vax gcc 2.95.3 needs -I. to build nslexer.c 399 cdat 6 Jun 2004 400 who mhitch 401 file lib/libc/arch/vax/Makefile.inc : 1.6 402 descr 403 It appears necessary to add -I. to CPPFLAGS when building 404 nslesxer.c. This may be caused by gcc 2.95.3 being used. 405 Should be reverted when a newer gcc is ready for vax. 406 kcah 407 408 hack vax gcc 2.95.3 doesn't understand "-std=c99" 409 cdat 5 April 2005 410 who tron 411 file src/share/mk/bsd.sys.mk 412 descr 413 We cannot use "-std=c99" for compiler warning level 4 and above 414 because gcc 2.95.3 doesn't support that option. 415 kcah 416 417 hack declare boolean_t in two IPF user-mode programs 418 cdate Tue Mar 7 19:19:20 CET 2006 419 who he 420 file dist/ipf/ipsend/iptests.c : 1.8 421 dist/ipf/ipsend/sock.c : 1.7 422 descr 423 The IPF user-mode programs ipsend and iptest first 424 include <sys/types.h> without _KERNEL defined, and 425 later include <sys/file.h> with _KERNEL defined. 426 This causes a build failure when building for vax, 427 since <sys/device.h> ends up being included without 428 bollean_t being defined by <sys/types.h>. 429 Build failure and further details documented in 430 PR#32907. 431 kcah 432 433 port sparc64 434 435 hack binutil-2.11-sparc64-pltrela 436 mdate 14 Aug 2001 437 who eeh 438 file libexec/ld.elf_so/arch/sparc64/mdreloc.c 439 descr 440 The first four PLT entries are reserved. There is some 441 disagreement whether they should have associated relocation 442 entries. Both the SPARC 32-bit and 64-bit ELF specifications 443 say that they should have relocation entries, but the 32-bit 444 SPARC binutils do not generate them, and now the 64-bit SPARC 445 binutils have stopped generating them too. 446 447 To provide binary compatibility, we will check the first entry, 448 if it is reserved it should not be of the type JMP_SLOT. If it 449 is JMP_SLOT, then the 4 reserved entries were not generated and 450 our index is 4 entries too far, so we frob the rela pointer. 451 kcah 452 453 454 port arm 455 456 hack gcc-unsigned-compare 457 cdate 09 Mar 2002 458 mdate 18 Mar 2002 459 who bjh21 460 file dist/bind/lib/nameser/ns_parse.c : 1.3 461 file dist/dhcp/minires/ns_parse.c : 1.3 462 file dist/dhcp/omapip/result.c : 1.2 463 file dist/dhcp/server/failover.c : 1.3 464 file gnu/dist/gawk/eval.c : 1.4 465 file gnu/dist/toolchain/bfd/bfd.c : 1.2 466 file gnu/dist/toolchain/bfd/format.c : 1.2 467 file gnu/dist/toolchain/gdb/target.c : 1.2 468 file sys/kern/vfs_subr.c : 1.172 469 descr When checking that a potentially-unsigned enum is >= 0, assign 470 it to an int first. This is necessary to avoid "comparison is 471 always true" warnings with -fshort-enums. Casting to an int 472 really should be enough, but turns out not to be. 473 kcah 474 475 hack gcc 3.3.2/arm sys/kern/uipc_socket.c 476 cdate Tue Oct 28 18:02:16 GMT 2003 477 who skrll 478 pr 23044 479 file sys/arch/arm/conf/Makefile.arm : 1.19 480 descr 481 Performing a build.sh tools on a CATS with NFS mounted 482 obj and src directories results in "panic: receive 1" 483 The hack is to compile sys/kern/uipc_socket.c with 484 -fno-strict-aliasing 485 kcah 486 487 488 port pc532 489 490 hack egcs-pc532-ip6_mroute 491 cdate 09 Jul 2002 492 who simonb 493 file sys/arch/pc532/conf/Makefile.pc532 : 1.70 494 file sys/arch/pc532/conf/files.pc532 : 1.47 495 descr 496 egcs 1.1.2 gets an "internal error--insn does not satisfy its 497 constraints" error compiling ip6_mroute.c with -O2 or greater. 498 -O1 works around this problem. 499 kcah 500 501 hack gcc-pc532-duffs_device 502 cdate Mon Oct 27 07:23:05 UTC 2003 503 who simonb 504 file sys/arch/pc532/conf/Makefile.pc532 : 1.71 505 file sys/arch/pc532/conf/files.pc532 : 1.52 506 pr GCC PR optimization/5230 507 descr 508 gcc incorrectly gives an "unreachable code at beginning of 509 switch statement" for a Duff's device construct in 510 arch/pc532/dev/ncr.c. There is no way to disable just this 511 warning, so -Wno-error is turned on for this file. 512 kcah 513 514 hack gcc332-cppmacro-ice 515 cdate Sun Dec 7 12:48:33 UTC 2003 516 who simonb 517 file gnu/usr.bin/gcc3/libcpp/Makefile : 1.2 518 descr 519 gcc 3.3.2 gets an ICE when compiling cppmacro.c with -O2. 520 The hack is to use -O1 for this file. Fixed in gcc 521 -current mainline, unable to work out where the fix is 522 right now. 523 kcah 524 525 526 port sh3 527 528 hack gcc-sh3-sed 529 mdate 23 Apr 2002 530 who thorpej 531 file usr.bin/sed/Makefile : 1.9 : 9 : 13 532 descr 533 The in-tree GCC 2.95.3-based compiler ICEs when building 534 with optimization for SuperH. Hack is to build with -O0. 535 kcah 536 537 hack gcc4-sh3-bz2 538 mdate 20 May 2006 539 who mrg 540 file lib/libbz2/Makefile : 1.10 541 descr 542 The in-tree GCC 4.1-based compiler generated too-far 543 pc-relative addresses. Hack is to build with -O0. 544 kcah 545 546 547 port sh5 548 549 hack SuperH SH5 Toolchain Bugs 550 cdate 11 Jul 2002 551 who scw 552 file usr.sbin/ndbootd/ndbootd.c : 1.6 553 file usr.sbin/traceroute/traceroute.c : 1.48 554 descr 555 The SuperH SH5 toolchain (2.97-sh5-010522) gets an internal 556 compiler error when assigning a bit-wise inverted value 557 under some circumstances. 558 Work around it by splitting the statement into two. 559 kcah 560 561 hack SuperH SH5 Toolchain Bugs 562 cdate 17 May 2003 563 who scw 564 file lib/libpthread/pthread_lock.c : 1.7 565 descr 566 The SuperH SH5 toolchain generates incorrect PIC code when 567 faced with a symbol which is declared extern, but has local 568 scope due to being defined within an asm() statement (without 569 being declared .globl in that statement). Work around it by 570 adding the .globl. 571 kcah 572 573 hack gcc 3.3.2 on sh5 - ICE compiling reload1.c at -O2 574 cdate Sun Dec 7 19:44:05 GMT 2003 575 who scw 576 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 577 descr 578 Gcc3 for sh5 gets an ICE compiling reload1.c at -O2. 579 Drop to -O1 for now when building for sh5. 580 kcah 581 582 hack gcc 3.3.2 on sh5 - ICE compiling elf32.c/elf64.c at -O2 583 cdate Sun Dec 7 21:10:46 GMT 2003 584 who scw 585 file gnu/lib/libbfd/Makefile : 1.39 586 descr 587 Gcc3 for sh5 gets an ICE compiling libbfd's elf32.c 588 and elf64.c at -O2. 589 Drop to -O1 for now when building for sh5. 590 kcah 591 592 593 hack gcc 3.3.2 on sh5 - fatal warning compiling function.c 594 cdate Sun Dec 7 19:44:05 GMT 2003 595 who scw 596 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 597 descr 598 Gcc3 for sh5 issues a warning: 599 .../gnu/dist/gcc/gcc/function.c:4742: warning: `and' of 600 mutually exclusive equal-tests is always 0. 601 This causes the build to fail because of -Werror. 602 Work-around by defining NOGCCERROR when building for sh5. 603 kcah 604 605 hack gcc 3.3.3 on sh5 - ICE compiling rbtdb.c and rbtdb64.c 606 cdate Thu Nov 11 00:35:33 UTC 2004 607 who he 608 file usr.sbin/bind/libdns/Makefile/1.2 609 descr 610 Gcc3 for sh5 gets an ICE compiling these files at -O2. 611 Drop to -O1 for now when building for sh5. 612 kcah 613 614 hack gcc 3.3.3 nb3 on sh5 - ICE compiling bsd-comp.c 615 cdate Thu May 25 23:05:20 UTC 2005 616 who he 617 file sys/lkm/net/bsdcomp/Makefile : 1.3 618 descr 619 Gcc3 for sh5 gets an ICE compiling this at -O2, 620 "could not split insn". Drop to -O1 for sh5. 621 kcah 622 623 hack gcc 3.3.3 nb3 on sh5 - ICE compiling strtod.c 624 cdate Tue Jan 31 10:51:52 GMT 2006 625 who scw 626 file lib/libc/gdtoa/Makefile.inc : 1.2 627 descr 628 Gcc3 for sh5 gets an ICE compiling this at -O2, 629 "could not split insn". Drop to -O1 for sh5. 630 kcah 631 632 port sun2 633 634 hack gcc 3.3.2/mdsetimage 635 cdate Tue Oct 28 18:43:05 EST 2003 636 who fredette 637 file gnu/usr.sbin/mdsetimage/Makefile : 1.15 638 descr 639 mdsetimage.c causes cc1 to barf for as-yet unknown reasons. 640 this hack uses -O0 to avoid the problem. 641 kcah 642 643 hack gcc 3.3.2/installboot/ffs.c 644 cdate Tue Oct 28 18:43:05 EST 2003 645 who fredette 646 file usr.sbin/installboot/Makefile : 1.26 647 descr 648 ffs.c causes cc1 to barf for as-yet unknown reasons. this 649 hack uses -O0 to avoid the problem. 650 kcah 651 652 653 port m68000 654 655 hack gcc 3.3.2/gcc/ra-colorize.c 656 cdate Wed Nov 5 11:03:13 EST 2003 657 who mrg 658 file gnu/usr.bin/gcc3/backend/Makefile : 1.11 659 descr 660 ra-colorize.c causes a whole spew of unreferenced .L* local 661 symbols. using -O0 (or even -O2 reportedly) avoids the problem. 662 Note this has been fixed in 3.3.3 at least on m68k, 663 but it hasn't been confirmed on sun2/m68000. 664 (it's too slow even on emulator and unlikely to build 665 toolchains on sun2 with its maximum 4MB RAM) 666 kcah 667 668 port sparc64 669 670 hack disable optimzations for uvm_bio.c on 32 bit kernels 671 cdate Sun Mar 21 14:14:04 MET 2004 672 who martin 673 file sys/arch/sparc64/conf/Makefile.sparc64 : 1.53-1.54 674 file sys/arch/sparc64/conf/files.sparc64 : 1.93 675 descr 676 The sparc compiler miscompiles uvm_bio.c when using 677 any optimization. This results in ubc_release panics. 678 kcah 679 680 port macppc 681 682 hack remove inline from rotate_{left,right} 683 cdate Tue Feb 22 13:43:25 EST 2005 684 who christos 685 file src/dist/bind/lib/dns/rbt.c 686 descr 687 The macppc gcc-3.3 compiler miscompiles rbt.c when these 688 functions are inlined. The error is: 689 .* named[368]: rbt.c:1584: INSIST(child != (void *)0) >failed 690 .* named[368]: exiting (due to assertion failure) 691 This is reportedly fixed in gcc-3.4 692 kcah 693 694 port hppa 695 696 hack hppa-gcc-3.3.3/grep/dfa.c 697 cdate Sun Aug 8 08:34:32 PDT 2004 698 who chs 699 file gnu/usr.bin/grep/grep/Makefile : 1.4 700 descr 701 gcc 3.3.3 generates bad code for dfa.c with -O2, 702 reduce optimization to -O1 to avoid the bug. 703 kcah 704 705 hack hppa-gcc-3.3.3 / make/buf.c 706 cdate Mon May 8 13:02:36 CEST 2006 707 who he 708 file usr.bin/make/Makefile : 1.34 709 descr 710 gcc 3.3.3 nb3 gets an "unrecognized insn" internal 711 compiler error when building this file with -O2, 712 reduce optimization to -O1 to avoid the bug. 713 kcah 714 715 hack hppa boot-from-disk memory corruption 716 cdate Wed May 18 06:56:07 PDT 2005 717 who chs 718 file src/sys/dev/scsipi/scsipiconf.h : 1.98 719 descr 720 There is some bug with DMA on hppa that corrupts scsipi_xfer 721 structures, but it only shows up when booting from disk. 722 For now, we'll add some padding to scsipi_xfer so that 723 the corrupted memory is not otherwise used. 724 kcah 725 726 port mips 727 728 hack mips-shared-linker-load-address 729 cdate Fri Oct 7 08:33:10 UTC 2005 730 who simonb 731 file src/sys/kern/exec_elf32.c : 1.107 732 descr 733 With COMPAT_16 or previous enabled (which enables 734 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 735 load and run at address 0. The check to fix this in 736 rev 1.107 only checks the first psection of the ELF 737 executable, which may not be loadable. A more correct 738 fix is to check the first loadable psection instead of 739 just the first psection. 740 kcah 741 742
Indexes created Wed Nov 05 21:10:10 GMT 2025