HACKS revision 1.73
1 # $NetBSD: HACKS,v 1.73 2006/05/21 01:24:41 dan 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/sparc/mdreloc.c : 1.39 152 file libexec/ld.elf_so/arch/sparc64/mdreloc.c : 1.39 153 file libexec/ld.elf_so/arch/x86_64/mdreloc.c : 1.27 154 file sbin/fsck_ext2fs/dir.c : 1.19 155 file sbin/routed/rtquery/rtquery.c : 1.18 156 file sys/arch/amd64/amd64/pmap.c : 1.26 157 file sys/crypto/cast128/cast128.c : 1.9 158 file sys/ddb/db_command.c : 1.86 159 file sys/dev/cardbus/cardbus_map.c : 1.21 160 file sys/dev/fss.c : 1.25 161 file sys/dev/ic/igsfb.c : 1.39 162 file sys/dev/ic/mb86950.c : 1.5 163 file sys/dev/ic/midway.c : 1.71 164 file sys/dev/kttcp.c : 1.18 165 file sys/dev/rasops/rasops_bitops.h : 1.9 166 file sys/dev/pci/cmpci.c : 1.31 167 file sys/dev/pci/machfb.c : 1.45 168 file sys/dev/usb/ohci.c : 1.174 169 file sys/dev/usb/uhci.c : 1.196 170 file sys/dev/rasops/rasops_bitops.h : 1.9 171 file sys/dist/ipf/netinet/ip_nat.c : 1.10 172 file sys/dist/ipf/netinet/ip_rpcb_pxy.c : 1.8 173 file sys/dist/pf/net/pf.c : 1.22 174 file sys/fs/udf/udf_vnops.c : 1.4 175 file sys/kern/kern_sig.c : 1.219 176 file sys/kern/tty.c : 1.181 177 file sys/net/bpf.c : 1.116 178 file sys/net/zlib.c : 1.26 179 file sys/netccitt/if_x25subr.c : 1.37 180 file sys/netinet/in.c : 1.107 181 file sys/netsmb/smb_smb.c : 1.27 182 file sys/netsmb/smb_trantcp.c : 1.22 183 file sys/nfs/nfs_serv.c : 1.108 184 file sys/nfs/nfs_socket.c : 1.129 185 file sys/nfs/nfs_syscalls.c : 1.91 186 file sys/ufs/lfs/lfs_vfsops.c : 1.207 [also (char *)] 187 file usr.bin/ftp/ftp.c : 1.140 188 file usr.bin/find/function.c : 1.54 189 file usr.bin/mail/tty.c : 1.20 190 file usr.bin/nl/nl.c : 1.7 191 file usr.bin/systat/keyboard.c : 1.23 192 file usr.bin/usbhidctl/usbhid.c : 1.29 193 file usr.bin/vi/cl/cl_read.c : 1.5 194 file usr.bin/vi/ex/ex_cscope.c : 1.12 195 file usr.bin/vi/ex/ex_tag.c : 1.19 196 file usr.bin/vi/vi/v_txt.c : 1.15 197 file usr.sbin/altq/altqstat/qdisc_rio.c : 1.4 198 file usr.sbin/cron/do_command.c : 1.19 199 file usr.sbin/timed/timed/slave.c : 1.15 200 descr 201 GCC 4.1 gets many uninitialised variable warnings wrong. We should 202 really audit all the old hacks like this when older compilers are 203 removed from the tree, as many are probably no longer required. 204 The problem is that it does not recognize initialization via function 205 call pointer. I.e. 206 int p; 207 foo(&p); 208 does not mark p as initialized. 209 kcah 210 211 hack gcc4 pointer sign and strict aliasing problems 212 mdate 10 May 2006 213 who mrg 214 file bin/ed/Makefile : 1.33 215 file bin/systrace/Makefile : 1.12 216 file distrib/utils/sysinst/Makefile.inc : 1.44 217 file games/bcd/Makefile : 1.5 218 file games/dab/Makefile : 1.5 219 file games/larn/Makefile : 1.17 220 file games/pom/Makefile : 1.5 221 file lib/libasn1/Makefile : 1.26 222 file lib/libcrypt/Makefile : 1.17 223 file lib/libgssapi/Makefile : 1.16 224 file lib/libhdb/Makefile : 1.20 225 file lib/libkadm5clnt/Makefile : 1.21 226 file lib/libkadm5srv/Makefile : 1.25 227 file lib/libkrb5/Makefile : 1.35 228 file lib/libssh/Makefile : 1.6 229 file lib/libtelnet/Makefile : 1.26 230 file libexec/getty/Makefile : 1.14 231 file libexec/kadmind/Makefile : 1.19 232 file libexec/kpasswdd/Makefile : 1.14 233 file sbin/atactl/Makefile : 1.3 234 file sbin/cgdconfig/Makefile : 1.7 235 file sbin/clri/Makefile : 1.13 236 file sbin/dkctl/Makefile : 1.4 237 file sbin/dump/Makefile : 1.33 238 file sbin/fdisk/Makefile : 1.35 239 file sbin/fsck_ext2fs/Makefile : 1.11 240 file sbin/fsck_ffs/Makefile : 1.29 241 file sbin/fsdb/Makefile : 1.18 242 file sbin/mount_smbfs/Makefile : 1.4 243 file sbin/newfs/Makefile : 1.30 244 file sbin/newfs_sysvbfs/Makefile : 1.2 245 file sbin/restore/Makefile : 1.23 246 file sbin/veriexecctl/Makefile : 1.11 247 file sys/lib/libsa/Makefile : 1.59 248 file sys/arch/evbarm/adi_brh/brh_machdep.c : 1.24 249 file usr.bin/awk/Makefile : 1.9 250 file usr.bin/crontab/Makefile : 1.24 251 file usr.bin/ctags/Makefile : 1.8 252 file usr.bin/gzip/Makefile : 1.10 253 file usr.bin/ssh/sftp/Makefile : 1.10 254 file usr.bin/ssh/ssh/Makefile : 1.25 255 file usr.bin/vi/build/Makefile : 1.26 256 file usr.bin/telnet/Makefile : 1.40 257 file usr.bin/tn3270/tn3270/Makefile : 1.36 258 file usr.bin/tr/Makefile : 1.4 259 file usr.sbin/amd/amd/Makefile : 1.27 260 file usr.sbin/amd/amq/Makefile : 1.14 261 file usr.sbin/amd/libamu/Makefile : 1.20 262 file usr.sbin/amd/pawd/Makefile : 1.5 263 file usr.sbin/bind/Makefile.inc : 1.22 264 file usr.sbin/bind/libdns/Makefile : 1.3 265 file usr.sbin/bind/named/Makefile : 1.17 266 file usr.sbin/bootp/bootptest/Makefile : 1.2 267 file usr.sbin/chrtbl/Makefile : 1.6 268 file usr.sbin/cron/Makefile : 1.12 269 file usr.sbin/dhcp/Makefile.inc : 1.20 270 file usr.sbin/dumplfs/Makefile : 1.11 271 file usr.sbin/hprop/Makefile : 1.13 272 file usr.sbin/installboot/Makefile : 1.35 273 file usr.sbin/ipf/ipftest/Makefile : 1.32 274 file usr.sbin/isdn/isdnd/Makefile : 1.6 275 file usr.sbin/isdn/isdnmonitor/Makefile : 1.3 276 file usr.sbin/isdn/isdntel/Makefile : 1.2 277 file usr.sbin/isdn/isdntrace/Makefile : 126 278 file usr.sbin/mopd/common/Makefile : 1.10 279 file usr.sbin/mopd/mopd/Makefile : 1.9 280 file usr.sbin/mopd/mopprobe/Makefile : 1.7 281 file usr.sbin/makefs/Makefile : 1.17 282 file usr.sbin/mscdlabel/Makefile : 1.5 283 file usr.sbin/pkg_install/add/Makefile : 1.7 284 file usr.sbin/pkg_install/create/Makefile : 1.5 285 file usr.sbin/pkg_install/lib/Makefile : 1.28 286 file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11 287 file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5 288 file usr.sbin/pppd/Makefile.inc : 1.3 289 file usr.sbin/pppd/pppd/Makefile : 1.38 290 file usr.sbin/rarpd/Makefile : 1.10 291 file usr.sbin/rbootd/Makefile : 1.10 292 file usr.sbin/rpc.pcnfsd/Makefile : 1.17 293 file usr.sbin/rtadvd/Makefile : 1.9 294 file usr.sbin/tcpdump/Makefile : 1.42 295 file usr.sbin/wiconfig/Makefile : 1.3 296 descr 297 GCC 4.1 warns on pointer sign comparision/assignments and lots of 298 code does not conform. For now we use -Wno-pointer-sign and 299 -fno-strict-aliasing. 300 kcah 301 302 port vax 303 304 hack gcc 2.95/vax doesn't like abort being used as function pointer 305 cdate Tue Dec 13 05:54:50 GMT 2005 306 who jmc 307 file lib/libc/rpc/svc_vc.c 1.15 308 descr 309 Provide a local definition for abort which doesn't include 310 the noreturn attribute which trips up gcc 2.95 on vax. 311 312 hack gcc 2.95/vax doesn't have stdbool.h and gettext needs it 313 cdate Mon May 9 12:16:22 CDT 2005 314 who jmc 315 file gnu/usr.bin/gettext/Makefile.inc.prog 1.5 316 gnu/usr.bin/gettext/libgrep/Makefile 1.3 317 gnu/usr.bin/gettext/libnlspr/Makefile 1.5 318 gnu/usr.bin/gettext/libnlsut/Makefile 1.3 319 descr 320 The latest gettext assumes a C99 environment or at least 321 configure checks to work around this. As we don't use configure 322 provide a stdbool.h for vax builds locally in directories from 323 the template provided by the gettext code. 324 325 hack gcc 2.95/vax can't handle __used__ in mcount.c 326 cdate Fri May 6 14:30:53 CDT 2005 327 who jmc 328 file src/lib/libc/gmon/mcount.c 1.17 329 descr 330 Recent changes to mark this as __used__ to prevent optimization 331 away on sparc64 don't work on 2.95 vax. Ifdef'd back in the 332 old __unused__ if on vax. 333 334 hack gcc 2.95/vax cannot handle __builtin_ffs() 335 cdate Fri Aug 23 21:31:15 CEST 2002 336 who ragge 337 file sys/lib/libkern/libkern.h : 1.42 338 descr 339 __builtin_ffs() is ifdef'd away if __vax__. Matt Thomas has 340 added this feature to GCC 3 so it can be removed when switching. 341 342 343 hack gcc-vax-libbz2 344 mdate 27 Jun 2002 345 who thorpej 346 file lib/libbz2/Makefile 347 descr 348 libbz2 is mis-compiled with optimization with GCC 2.95.3 349 on VAX. -O0 works around this problem. 350 kcah 351 352 hack gawk 353 mdate 8 Nov 2003 354 who ragge 355 file gnu/usr.bin/gawk/Makefile 356 descr 357 gawk is mis-compiled with optimization with GCC 2.95.3 358 on VAX. -O0 works around this problem. 359 kcah 360 361 hack vax Toolchain bug 362 cdate 28 Mar 2003 363 who he 364 file sys/arch/vax/vax/intvec.S : 1.5 365 descr 366 Workaround for PR toolchain/20924. The assembler apparently 367 tries to range-check byte offsets when it doesn't have 368 sufficient information to make that decision. 369 Workaround uses `brw' instead of `brb' instruction. 370 kcah 371 372 hack vax gcc 2.95.3 -Wuninitialized workarounds 373 cdate 6 Nov 2003 374 who he 375 file sys/dev/bi/if_ni.c : 1.22 376 file sys/arch/vax/vax/ctu.c : 1.20 377 descr 378 Workaround for gcc 2.95.3 failing to detect that certain 379 variables will be initialized; so that this code compiles 380 with -Wuninitialized. Should be reviewed and possibly 381 reverted when gcc 3.3.2 is ready for vax. 382 kcah 383 384 hack vax gcc 2.95.3 structure initialization 385 cdat 13 May 2004 386 who cl 387 file sys/miscfs/kernfs/kernfs_vnops.c : 1.104 388 descr 389 Workaround for gcc 2.95.3 failing to initialize structures 390 and/or unions inside structures using nested designators. 391 Should be reverted when gcc >=3.3.3 is ready for vax. 392 kcah 393 394 hack vax gcc 2.95.3 needs -I. to build nslexer.c 395 cdat 6 Jun 2004 396 who mhitch 397 file lib/libc/arch/vax/Makefile.inc : 1.6 398 descr 399 It appears necessary to add -I. to CPPFLAGS when building 400 nslesxer.c. This may be caused by gcc 2.95.3 being used. 401 Should be reverted when a newer gcc is ready for vax. 402 kcah 403 404 hack vax gcc 2.95.3 doesn't understand "-std=c99" 405 cdat 5 April 2005 406 who tron 407 file src/share/mk/bsd.sys.mk 408 descr 409 We cannot use "-std=c99" for compiler warning level 4 and above 410 because gcc 2.95.3 doesn't support that option. 411 kcah 412 413 hack declare boolean_t in two IPF user-mode programs 414 cdate Tue Mar 7 19:19:20 CET 2006 415 who he 416 file dist/ipf/ipsend/iptests.c : 1.8 417 dist/ipf/ipsend/sock.c : 1.7 418 descr 419 The IPF user-mode programs ipsend and iptest first 420 include <sys/types.h> without _KERNEL defined, and 421 later include <sys/file.h> with _KERNEL defined. 422 This causes a build failure when building for vax, 423 since <sys/device.h> ends up being included without 424 bollean_t being defined by <sys/types.h>. 425 Build failure and further details documented in 426 PR#32907. 427 kcah 428 429 port sparc64 430 431 hack binutil-2.11-sparc64-pltrela 432 mdate 14 Aug 2001 433 who eeh 434 file libexec/ld.elf_so/arch/sparc64/mdreloc.c 435 descr 436 The first four PLT entries are reserved. There is some 437 disagreement whether they should have associated relocation 438 entries. Both the SPARC 32-bit and 64-bit ELF specifications 439 say that they should have relocation entries, but the 32-bit 440 SPARC binutils do not generate them, and now the 64-bit SPARC 441 binutils have stopped generating them too. 442 443 To provide binary compatibility, we will check the first entry, 444 if it is reserved it should not be of the type JMP_SLOT. If it 445 is JMP_SLOT, then the 4 reserved entries were not generated and 446 our index is 4 entries too far, so we frob the rela pointer. 447 kcah 448 449 450 port arm 451 452 hack gcc-unsigned-compare 453 cdate 09 Mar 2002 454 mdate 18 Mar 2002 455 who bjh21 456 file dist/bind/lib/nameser/ns_parse.c : 1.3 457 file dist/dhcp/minires/ns_parse.c : 1.3 458 file dist/dhcp/omapip/result.c : 1.2 459 file dist/dhcp/server/failover.c : 1.3 460 file gnu/dist/gawk/eval.c : 1.4 461 file gnu/dist/toolchain/bfd/bfd.c : 1.2 462 file gnu/dist/toolchain/bfd/format.c : 1.2 463 file gnu/dist/toolchain/gdb/target.c : 1.2 464 file sys/kern/vfs_subr.c : 1.172 465 descr When checking that a potentially-unsigned enum is >= 0, assign 466 it to an int first. This is necessary to avoid "comparison is 467 always true" warnings with -fshort-enums. Casting to an int 468 really should be enough, but turns out not to be. 469 kcah 470 471 hack gcc 3.3.2/arm sys/kern/uipc_socket.c 472 cdate Tue Oct 28 18:02:16 GMT 2003 473 who skrll 474 pr 23044 475 file sys/arch/arm/conf/Makefile.arm : 1.19 476 descr 477 Performing a build.sh tools on a CATS with NFS mounted 478 obj and src directories results in "panic: receive 1" 479 The hack is to compile sys/kern/uipc_socket.c with 480 -fno-strict-aliasing 481 kcah 482 483 484 port pc532 485 486 hack egcs-pc532-ip6_mroute 487 cdate 09 Jul 2002 488 who simonb 489 file sys/arch/pc532/conf/Makefile.pc532 : 1.70 490 file sys/arch/pc532/conf/files.pc532 : 1.47 491 descr 492 egcs 1.1.2 gets an "internal error--insn does not satisfy its 493 constraints" error compiling ip6_mroute.c with -O2 or greater. 494 -O1 works around this problem. 495 kcah 496 497 hack gcc-pc532-duffs_device 498 cdate Mon Oct 27 07:23:05 UTC 2003 499 who simonb 500 file sys/arch/pc532/conf/Makefile.pc532 : 1.71 501 file sys/arch/pc532/conf/files.pc532 : 1.52 502 pr GCC PR optimization/5230 503 descr 504 gcc incorrectly gives an "unreachable code at beginning of 505 switch statement" for a Duff's device construct in 506 arch/pc532/dev/ncr.c. There is no way to disable just this 507 warning, so -Wno-error is turned on for this file. 508 kcah 509 510 hack gcc332-cppmacro-ice 511 cdate Sun Dec 7 12:48:33 UTC 2003 512 who simonb 513 file gnu/usr.bin/gcc3/libcpp/Makefile : 1.2 514 descr 515 gcc 3.3.2 gets an ICE when compiling cppmacro.c with -O2. 516 The hack is to use -O1 for this file. Fixed in gcc 517 -current mainline, unable to work out where the fix is 518 right now. 519 kcah 520 521 522 port sh3 523 524 hack gcc-sh3-sed 525 mdate 23 Apr 2002 526 who thorpej 527 file usr.bin/sed/Makefile : 1.9 : 9 : 13 528 descr 529 The in-tree GCC 2.95.3-based compiler ICEs when building 530 with optimization for SuperH. Hack is to build with -O0. 531 kcah 532 533 534 port sh5 535 536 hack SuperH SH5 Toolchain Bugs 537 cdate 11 Jul 2002 538 who scw 539 file usr.sbin/ndbootd/ndbootd.c : 1.6 540 file usr.sbin/traceroute/traceroute.c : 1.48 541 descr 542 The SuperH SH5 toolchain (2.97-sh5-010522) gets an internal 543 compiler error when assigning a bit-wise inverted value 544 under some circumstances. 545 Work around it by splitting the statement into two. 546 kcah 547 548 hack SuperH SH5 Toolchain Bugs 549 cdate 17 May 2003 550 who scw 551 file lib/libpthread/pthread_lock.c : 1.7 552 descr 553 The SuperH SH5 toolchain generates incorrect PIC code when 554 faced with a symbol which is declared extern, but has local 555 scope due to being defined within an asm() statement (without 556 being declared .globl in that statement). Work around it by 557 adding the .globl. 558 kcah 559 560 hack gcc 3.3.2 on sh5 - ICE compiling reload1.c at -O2 561 cdate Sun Dec 7 19:44:05 GMT 2003 562 who scw 563 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 564 descr 565 Gcc3 for sh5 gets an ICE compiling reload1.c at -O2. 566 Drop to -O1 for now when building for sh5. 567 kcah 568 569 hack gcc 3.3.2 on sh5 - ICE compiling elf32.c/elf64.c at -O2 570 cdate Sun Dec 7 21:10:46 GMT 2003 571 who scw 572 file gnu/lib/libbfd/Makefile : 1.39 573 descr 574 Gcc3 for sh5 gets an ICE compiling libbfd's elf32.c 575 and elf64.c at -O2. 576 Drop to -O1 for now when building for sh5. 577 kcah 578 579 580 hack gcc 3.3.2 on sh5 - fatal warning compiling function.c 581 cdate Sun Dec 7 19:44:05 GMT 2003 582 who scw 583 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 584 descr 585 Gcc3 for sh5 issues a warning: 586 .../gnu/dist/gcc/gcc/function.c:4742: warning: `and' of 587 mutually exclusive equal-tests is always 0. 588 This causes the build to fail because of -Werror. 589 Work-around by defining NOGCCERROR when building for sh5. 590 kcah 591 592 hack gcc 3.3.3 on sh5 - ICE compiling rbtdb.c and rbtdb64.c 593 cdate Thu Nov 11 00:35:33 UTC 2004 594 who he 595 file usr.sbin/bind/libdns/Makefile/1.2 596 descr 597 Gcc3 for sh5 gets an ICE compiling these files at -O2. 598 Drop to -O1 for now when building for sh5. 599 kcah 600 601 hack gcc 3.3.3 nb3 on sh5 - ICE compiling bsd-comp.c 602 cdate Thu May 25 23:05:20 UTC 2005 603 who he 604 file sys/lkm/net/bsdcomp/Makefile : 1.3 605 descr 606 Gcc3 for sh5 gets an ICE compiling this at -O2, 607 "could not split insn". Drop to -O1 for sh5. 608 kcah 609 610 hack gcc 3.3.3 nb3 on sh5 - ICE compiling strtod.c 611 cdate Tue Jan 31 10:51:52 GMT 2006 612 who scw 613 file lib/libc/gdtoa/Makefile.inc : 1.2 614 descr 615 Gcc3 for sh5 gets an ICE compiling this at -O2, 616 "could not split insn". Drop to -O1 for sh5. 617 kcah 618 619 port sun2 620 621 hack gcc 3.3.2/mdsetimage 622 cdate Tue Oct 28 18:43:05 EST 2003 623 who fredette 624 file gnu/usr.sbin/mdsetimage/Makefile : 1.15 625 descr 626 mdsetimage.c causes cc1 to barf for as-yet unknown reasons. 627 this hack uses -O0 to avoid the problem. 628 kcah 629 630 hack gcc 3.3.2/installboot/ffs.c 631 cdate Tue Oct 28 18:43:05 EST 2003 632 who fredette 633 file usr.sbin/installboot/Makefile : 1.26 634 descr 635 ffs.c causes cc1 to barf for as-yet unknown reasons. this 636 hack uses -O0 to avoid the problem. 637 kcah 638 639 640 port m68000 641 642 hack gcc 3.3.2/gcc/ra-colorize.c 643 cdate Wed Nov 5 11:03:13 EST 2003 644 who mrg 645 file gnu/usr.bin/gcc3/backend/Makefile : 1.11 646 descr 647 ra-colorize.c causes a whole spew of unreferenced .L* local 648 symbols. using -O0 (or even -O2 reportedly) avoids the problem. 649 Note this has been fixed in 3.3.3 at least on m68k, 650 but it hasn't been confirmed on sun2/m68000. 651 (it's too slow even on emulator and unlikely to build 652 toolchains on sun2 with its maximum 4MB RAM) 653 kcah 654 655 port sparc64 656 657 hack disable optimzations for uvm_bio.c on 32 bit kernels 658 cdate Sun Mar 21 14:14:04 MET 2004 659 who martin 660 file sys/arch/sparc64/conf/Makefile.sparc64 : 1.53-1.54 661 file sys/arch/sparc64/conf/files.sparc64 : 1.93 662 descr 663 The sparc compiler miscompiles uvm_bio.c when using 664 any optimization. This results in ubc_release panics. 665 kcah 666 667 port macppc 668 669 hack remove inline from rotate_{left,right} 670 cdate Tue Feb 22 13:43:25 EST 2005 671 who christos 672 file src/dist/bind/lib/dns/rbt.c 673 descr 674 The macppc gcc-3.3 compiler miscompiles rbt.c when these 675 functions are inlined. The error is: 676 .* named[368]: rbt.c:1584: INSIST(child != (void *)0) >failed 677 .* named[368]: exiting (due to assertion failure) 678 This is reportedly fixed in gcc-3.4 679 kcah 680 681 port hppa 682 683 hack hppa-gcc-3.3.3/grep/dfa.c 684 cdate Sun Aug 8 08:34:32 PDT 2004 685 who chs 686 file gnu/usr.bin/grep/grep/Makefile : 1.4 687 descr 688 gcc 3.3.3 generates bad code for dfa.c with -O2, 689 reduce optimization to -O1 to avoid the bug. 690 kcah 691 692 hack hppa-gcc-3.3.3 / make/buf.c 693 cdate Mon May 8 13:02:36 CEST 2006 694 who he 695 file usr.bin/make/Makefile : 1.34 696 descr 697 gcc 3.3.3 nb3 gets an "unrecognized insn" internal 698 compiler error when building this file with -O2, 699 reduce optimization to -O1 to avoid the bug. 700 kcah 701 702 hack hppa boot-from-disk memory corruption 703 cdate Wed May 18 06:56:07 PDT 2005 704 who chs 705 file src/sys/dev/scsipi/scsipiconf.h : 1.98 706 descr 707 There is some bug with DMA on hppa that corrupts scsipi_xfer 708 structures, but it only shows up when booting from disk. 709 For now, we'll add some padding to scsipi_xfer so that 710 the corrupted memory is not otherwise used. 711 kcah 712 713 port mips 714 715 hack mips-shared-linker-load-address 716 cdate Fri Oct 7 08:33:10 UTC 2005 717 who simonb 718 file src/sys/kern/exec_elf32.c : 1.107 719 descr 720 With COMPAT_16 or previous enabled (which enables 721 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 722 load and run at address 0. The check to fix this in 723 rev 1.107 only checks the first psection of the ELF 724 executable, which may not be loadable. A more correct 725 fix is to check the first loadable psection instead of 726 just the first psection. 727 kcah 728 729
Indexes created Wed Nov 05 22:09:55 GMT 2025