HACKS revision 1.64
1 # $NetBSD: HACKS,v 1.64 2006/05/12 18:06:29 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/refclock_shm.c : 1.4 138 file dist/ntp/sntp/timing.c : 1.3 139 file dist/pppd/pppstats/pppstats.c : 1.3 140 file dist/smbfs/lib/smb/rap.c : 1.6 141 file dist/tcpdump/print-zephyr.c : 1.5 142 file gnu/libexec/uucp/uucico/uucico.c : 1.6 143 file lib/libc/citrus/citrus_csmapper.c : 1.6 144 file lib/libc/citrus/citrus_pivot_factory.c : 1.5 145 file lib/libc/inet/inet_cidr_ntop.c : 1.3 146 file lib/libc/inet/inet_ntop.c : 1.3 147 file lib/libc/stdio/vfwprintf.c : 1.8 148 file libexec/ld.elf_so/arch/sparc64/mdreloc.c : 1.39 149 file sbin/fsck_ext2fs/dir.c : 1.19 150 file sbin/routed/rtquery/rtquery.c : 1.18 151 file sys/crypto/cast128/cast128.c : 1.9 152 file sys/ddb/db_command.c : 1.86 153 file sys/dev/cardbus/cardbus_map.c : 1.xxx 154 file sys/dev/fss.c : 1.25 155 file sys/dev/ic/mb86950.c : 1.xxx 156 file sys/dev/ic/midway.c : 1.71 157 file sys/dev/usb/ohci.c : 1.xxx 158 file sys/dev/usb/uhci.c : 1.xxx 159 file sys/dev/pci/cmpci.c : 1.xxx 160 file sys/dev/pci/machfb.c : 1.45 161 file sys/dist/ipf/netinet/ip_nat.c : 1.10 162 file sys/dist/ipf/netinet/ip_rpcb_pxy.c : 1.8 163 file sys/dist/pf/net/pf.c : 1.22 164 file sys/fs/udf/udf_vnops.c : 1.4 165 file sys/kern/kern_sig.c : 1.219 166 file sys/kern/tty.c : 1.181 167 file sys/net/bpf.c : 1.116 168 file sys/net/zlib.c : 1.26 169 file sys/netccitt/if_x25subr.c : 1.xxx 170 file sys/netinet/in.c : 1.107 171 file sys/netsmb/smb_smb.c : 1.27 172 file sys/netsmb/smb_trantcp.c : 1.22 173 file sys/nfs/nfs_serv.c : 1.108 174 file sys/nfs/nfs_socket.c : 1.129 175 file sys/nfs/nfs_syscalls.c : 1.91 176 file sys/ufs/lfs/lfs_vfsops.c : 1.207 [also (char *)] 177 file usr.bin/ftp/ftp.c : 1.140 178 file usr.bin/find/function.c : 1.54 179 file usr.bin/mail/tty.c : 1.20 180 file usr.bin/nl/nl.c : 1.7 181 file usr.bin/systat/keyboard.c : 1.23 182 file usr.bin/usbhidctl/usbhid.c : 1.29 183 file usr.bin/vi/cl/cl_read.c : 1.5 184 file usr.bin/vi/ex/ex_cscope.c : 1.12 185 file usr.bin/vi/ex/ex_tag.c : 1.19 186 file usr.bin/vi/vi/v_txt.c : 1.15 187 file usr.sbin/altq/altqstat/qdisc_rio.c : 1.4 188 file usr.sbin/cron/do_command.c : 1.19 189 file usr.sbin/timed/timed/slave.c : 1.15 190 descr 191 GCC 4.1 gets many uninitialised variable warnings wrong. We should 192 really audit all the old hacks like this when older compilers are 193 removed from the tree, as many are probably no longer required. 194 kcah 195 196 hack gcc4 pointer sign and strict aliasing problems 197 mdate 10 May 2006 198 who mrg 199 file bin/ed/Makefile : 1.33 200 file bin/systrace/Makefile : 1.12 201 file games/bcd/Makefile : 1.5 202 file games/dab/Makefile : 1.5 203 file games/larn/Makefile : 1.17 204 file games/pom/Makefile : 1.5 205 file lib/libasn1/Makefile : 1.26 206 file lib/libcrypt/Makefile : 1.17 207 file lib/libgssapi/Makefile : 1.16 208 file lib/libhdb/Makefile : 1.20 209 file lib/libkadm5clnt/Makefile : 1.21 210 file lib/libkadm5srv/Makefile : 1.25 211 file lib/libkrb5/Makefile : 1.35 212 file lib/libssh/Makefile : 1.6 213 file lib/libtelnet/Makefile : 1.26 214 file libexec/getty/Makefile : 1.14 215 file libexec/kadmind/Makefile : 1.19 216 file libexec/kpasswdd/Makefile : 1.14 217 file sbin/atactl/Makefile : 1.3 218 file sbin/cgdconfig/Makefile : 1.7 219 file sbin/clri/Makefile : 1.13 220 file sbin/dkctl/Makefile : 1.4 221 file sbin/dump/Makefile : 1.33 222 file sbin/fdisk/Makefile : 1.35 223 file sbin/fsck_ext2fs/Makefile : 1.11 224 file sbin/fsck_ffs/Makefile : 1.29 225 file sbin/fsdb/Makefile : 1.18 226 file sbin/mount_smbfs/Makefile : 1.4 227 file sbin/newfs/Makefile : 1.30 228 file sbin/newfs_sysvbfs/Makefile : 1.2 229 file sbin/restore/Makefile : 1.23 230 file sbin/veriexecctl/Makefile : 1.11 231 file sys/lib/libsa/Makefile : 1.59 232 file usr.bin/awk/Makefile : 1.9 233 file usr.bin/crontab/Makefile : 1.24 234 file usr.bin/ctags/Makefile : 1.8 235 file usr.bin/gzip/Makefile : 1.10 236 file usr.bin/ssh/sftp/Makefile : 1.10 237 file usr.bin/ssh/ssh/Makefile : 1.25 238 file usr.bin/vi/build/Makefile : 1.26 239 file usr.bin/telnet/Makefile : 1.40 240 file usr.bin/tn3270/tn3270/Makefile : 1.36 241 file usr.bin/tr/Makefile : 1.4 242 file usr.sbin/amd/amd/Makefile : 1.27 243 file usr.sbin/amd/amq/Makefile : 1.14 244 file usr.sbin/amd/libamu/Makefile : 1.20 245 file usr.sbin/amd/pawd/Makefile : 1.5 246 file usr.sbin/bind/Makefile.inc : 1.22 247 file usr.sbin/bind/libdns/Makefile : 1.3 248 file usr.sbin/bind/named/Makefile : 1.17 249 file usr.sbin/bootp/bootptest/Makefile : 1.2 250 file usr.sbin/chrtbl/Makefile : 1.6 251 file usr.sbin/cron/Makefile : 1.12 252 file usr.sbin/dhcp/Makefile.inc : 1.20 253 file usr.sbin/dumplfs/Makefile : 1.11 254 file usr.sbin/hprop/Makefile : 1.13 255 file usr.sbin/installboot/Makefile : 1.35 256 file usr.sbin/ipf/ipftest/Makefile : 1.32 257 file usr.sbin/isdn/isdnd/Makefile : 1.6 258 file usr.sbin/isdn/isdnmonitor/Makefile : 1.3 259 file usr.sbin/isdn/isdntel/Makefile : 1.2 260 file usr.sbin/isdn/isdntrace/Makefile : 126 261 file usr.sbin/mopd/common/Makefile : 1.10 262 file usr.sbin/mopd/mopd/Makefile : 1.9 263 file usr.sbin/mopd/mopprobe/Makefile : 1.7 264 file usr.sbin/makefs/Makefile : 1.17 265 file usr.sbin/mscdlabel/Makefile : 1.5 266 file usr.sbin/pkg_install/add/Makefile : 1.7 267 file usr.sbin/pkg_install/create/Makefile : 1.5 268 file usr.sbin/pkg_install/lib/Makefile : 1.28 269 file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11 270 file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5 271 file usr.sbin/pppd/Makefile.inc : 1.3 272 file usr.sbin/pppd/pppd/Makefile : 1.38 273 file usr.sbin/rarpd/Makefile : 1.10 274 file usr.sbin/rbootd/Makefile : 1.10 275 file usr.sbin/rpc.pcnfsd/Makefile : 1.17 276 file usr.sbin/rtadvd/Makefile : 1.9 277 file usr.sbin/tcpdump/Makefile : 1.42 278 file usr.sbin/wiconfig/Makefile : 1.3 279 file usr.sbin/ypserv/ypserv/Makefile : 1.16 280 descr 281 GCC 4.1 warns on pointer sign comparision/assignments and lots of 282 code does not conform. For now we use -Wno-pointer-sign and 283 -fno-strict-aliasing. 284 kcah 285 286 287 port vax 288 289 hack gcc 2.95/vax doesn't like abort being used as function pointer 290 cdate Tue Dec 13 05:54:50 GMT 2005 291 who jmc 292 file lib/libc/rpc/svc_vc.c 1.15 293 descr 294 Provide a local definition for abort which doesn't include 295 the noreturn attribute which trips up gcc 2.95 on vax. 296 297 hack gcc 2.95/vax doesn't have stdbool.h and gettext needs it 298 cdate Mon May 9 12:16:22 CDT 2005 299 who jmc 300 file gnu/usr.bin/gettext/Makefile.inc.prog 1.5 301 gnu/usr.bin/gettext/libgrep/Makefile 1.3 302 gnu/usr.bin/gettext/libnlspr/Makefile 1.5 303 gnu/usr.bin/gettext/libnlsut/Makefile 1.3 304 descr 305 The latest gettext assumes a C99 environment or at least 306 configure checks to work around this. As we don't use configure 307 provide a stdbool.h for vax builds locally in directories from 308 the template provided by the gettext code. 309 310 hack gcc 2.95/vax can't handle __used__ in mcount.c 311 cdate Fri May 6 14:30:53 CDT 2005 312 who jmc 313 file src/lib/libc/gmon/mcount.c 1.17 314 descr 315 Recent changes to mark this as __used__ to prevent optimization 316 away on sparc64 don't work on 2.95 vax. Ifdef'd back in the 317 old __unused__ if on vax. 318 319 hack gcc 2.95/vax cannot handle __builtin_ffs() 320 cdate Fri Aug 23 21:31:15 CEST 2002 321 who ragge 322 file sys/lib/libkern/libkern.h : 1.42 323 descr 324 __builtin_ffs() is ifdef'd away if __vax__. Matt Thomas has 325 added this feature to GCC 3 so it can be removed when switching. 326 327 328 hack gcc-vax-libbz2 329 mdate 27 Jun 2002 330 who thorpej 331 file lib/libbz2/Makefile 332 descr 333 libbz2 is mis-compiled with optimization with GCC 2.95.3 334 on VAX. -O0 works around this problem. 335 kcah 336 337 hack gawk 338 mdate 8 Nov 2003 339 who ragge 340 file gnu/usr.bin/gawk/Makefile 341 descr 342 gawk is mis-compiled with optimization with GCC 2.95.3 343 on VAX. -O0 works around this problem. 344 kcah 345 346 hack vax Toolchain bug 347 cdate 28 Mar 2003 348 who he 349 file sys/arch/vax/vax/intvec.S : 1.5 350 descr 351 Workaround for PR toolchain/20924. The assembler apparently 352 tries to range-check byte offsets when it doesn't have 353 sufficient information to make that decision. 354 Workaround uses `brw' instead of `brb' instruction. 355 kcah 356 357 hack vax gcc 2.95.3 -Wuninitialized workarounds 358 cdate 6 Nov 2003 359 who he 360 file sys/dev/bi/if_ni.c : 1.22 361 file sys/arch/vax/vax/ctu.c : 1.20 362 descr 363 Workaround for gcc 2.95.3 failing to detect that certain 364 variables will be initialized; so that this code compiles 365 with -Wuninitialized. Should be reviewed and possibly 366 reverted when gcc 3.3.2 is ready for vax. 367 kcah 368 369 hack vax gcc 2.95.3 structure initialization 370 cdat 13 May 2004 371 who cl 372 file sys/miscfs/kernfs/kernfs_vnops.c : 1.104 373 descr 374 Workaround for gcc 2.95.3 failing to initialize structures 375 and/or unions inside structures using nested designators. 376 Should be reverted when gcc >=3.3.3 is ready for vax. 377 kcah 378 379 hack vax gcc 2.95.3 needs -I. to build nslexer.c 380 cdat 6 Jun 2004 381 who mhitch 382 file lib/libc/arch/vax/Makefile.inc : 1.6 383 descr 384 It appears necessary to add -I. to CPPFLAGS when building 385 nslesxer.c. This may be caused by gcc 2.95.3 being used. 386 Should be reverted when a newer gcc is ready for vax. 387 kcah 388 389 hack vax gcc 2.95.3 doesn't understand "-std=c99" 390 cdat 5 April 2005 391 who tron 392 file src/share/mk/bsd.sys.mk 393 descr 394 We cannot use "-std=c99" for compiler warning level 4 and above 395 because gcc 2.95.3 doesn't support that option. 396 kcah 397 398 hack declare boolean_t in two IPF user-mode programs 399 cdate Tue Mar 7 19:19:20 CET 2006 400 who he 401 file dist/ipf/ipsend/iptests.c : 1.8 402 dist/ipf/ipsend/sock.c : 1.7 403 descr 404 The IPF user-mode programs ipsend and iptest first 405 include <sys/types.h> without _KERNEL defined, and 406 later include <sys/file.h> with _KERNEL defined. 407 This causes a build failure when building for vax, 408 since <sys/device.h> ends up being included without 409 bollean_t being defined by <sys/types.h>. 410 Build failure and further details documented in 411 PR#32907. 412 kcah 413 414 port sparc64 415 416 hack binutil-2.11-sparc64-pltrela 417 mdate 14 Aug 2001 418 who eeh 419 file libexec/ld.elf_so/arch/sparc64/mdreloc.c 420 descr 421 The first four PLT entries are reserved. There is some 422 disagreement whether they should have associated relocation 423 entries. Both the SPARC 32-bit and 64-bit ELF specifications 424 say that they should have relocation entries, but the 32-bit 425 SPARC binutils do not generate them, and now the 64-bit SPARC 426 binutils have stopped generating them too. 427 428 To provide binary compatibility, we will check the first entry, 429 if it is reserved it should not be of the type JMP_SLOT. If it 430 is JMP_SLOT, then the 4 reserved entries were not generated and 431 our index is 4 entries too far, so we frob the rela pointer. 432 kcah 433 434 435 port arm 436 437 hack gcc-unsigned-compare 438 cdate 09 Mar 2002 439 mdate 18 Mar 2002 440 who bjh21 441 file dist/bind/lib/nameser/ns_parse.c : 1.3 442 file dist/dhcp/minires/ns_parse.c : 1.3 443 file dist/dhcp/omapip/result.c : 1.2 444 file dist/dhcp/server/failover.c : 1.3 445 file gnu/dist/gawk/eval.c : 1.4 446 file gnu/dist/toolchain/bfd/bfd.c : 1.2 447 file gnu/dist/toolchain/bfd/format.c : 1.2 448 file gnu/dist/toolchain/gdb/target.c : 1.2 449 file sys/kern/vfs_subr.c : 1.172 450 descr When checking that a potentially-unsigned enum is >= 0, assign 451 it to an int first. This is necessary to avoid "comparison is 452 always true" warnings with -fshort-enums. Casting to an int 453 really should be enough, but turns out not to be. 454 kcah 455 456 hack gcc 3.3.2/arm sys/kern/uipc_socket.c 457 cdate Tue Oct 28 18:02:16 GMT 2003 458 who skrll 459 pr 23044 460 file sys/arch/arm/conf/Makefile.arm : 1.19 461 descr 462 Performing a build.sh tools on a CATS with NFS mounted 463 obj and src directories results in "panic: receive 1" 464 The hack is to compile sys/kern/uipc_socket.c with 465 -fno-strict-aliasing 466 kcah 467 468 469 port pc532 470 471 hack egcs-pc532-ip6_mroute 472 cdate 09 Jul 2002 473 who simonb 474 file sys/arch/pc532/conf/Makefile.pc532 : 1.70 475 file sys/arch/pc532/conf/files.pc532 : 1.47 476 descr 477 egcs 1.1.2 gets an "internal error--insn does not satisfy its 478 constraints" error compiling ip6_mroute.c with -O2 or greater. 479 -O1 works around this problem. 480 kcah 481 482 hack gcc-pc532-duffs_device 483 cdate Mon Oct 27 07:23:05 UTC 2003 484 who simonb 485 file sys/arch/pc532/conf/Makefile.pc532 : 1.71 486 file sys/arch/pc532/conf/files.pc532 : 1.52 487 pr GCC PR optimization/5230 488 descr 489 gcc incorrectly gives an "unreachable code at beginning of 490 switch statement" for a Duff's device construct in 491 arch/pc532/dev/ncr.c. There is no way to disable just this 492 warning, so -Wno-error is turned on for this file. 493 kcah 494 495 hack gcc332-cppmacro-ice 496 cdate Sun Dec 7 12:48:33 UTC 2003 497 who simonb 498 file gnu/usr.bin/gcc3/libcpp/Makefile : 1.2 499 descr 500 gcc 3.3.2 gets an ICE when compiling cppmacro.c with -O2. 501 The hack is to use -O1 for this file. Fixed in gcc 502 -current mainline, unable to work out where the fix is 503 right now. 504 kcah 505 506 507 port sh3 508 509 hack gcc-sh3-sed 510 mdate 23 Apr 2002 511 who thorpej 512 file usr.bin/sed/Makefile : 1.9 : 9 : 13 513 descr 514 The in-tree GCC 2.95.3-based compiler ICEs when building 515 with optimization for SuperH. Hack is to build with -O0. 516 kcah 517 518 519 port sh5 520 521 hack SuperH SH5 Toolchain Bugs 522 cdate 11 Jul 2002 523 who scw 524 file usr.sbin/ndbootd/ndbootd.c : 1.6 525 file usr.sbin/traceroute/traceroute.c : 1.48 526 descr 527 The SuperH SH5 toolchain (2.97-sh5-010522) gets an internal 528 compiler error when assigning a bit-wise inverted value 529 under some circumstances. 530 Work around it by splitting the statement into two. 531 kcah 532 533 hack SuperH SH5 Toolchain Bugs 534 cdate 17 May 2003 535 who scw 536 file lib/libpthread/pthread_lock.c : 1.7 537 descr 538 The SuperH SH5 toolchain generates incorrect PIC code when 539 faced with a symbol which is declared extern, but has local 540 scope due to being defined within an asm() statement (without 541 being declared .globl in that statement). Work around it by 542 adding the .globl. 543 kcah 544 545 hack gcc 3.3.2 on sh5 - ICE compiling reload1.c at -O2 546 cdate Sun Dec 7 19:44:05 GMT 2003 547 who scw 548 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 549 descr 550 Gcc3 for sh5 gets an ICE compiling reload1.c at -O2. 551 Drop to -O1 for now when building for sh5. 552 kcah 553 554 hack gcc 3.3.2 on sh5 - ICE compiling elf32.c/elf64.c at -O2 555 cdate Sun Dec 7 21:10:46 GMT 2003 556 who scw 557 file gnu/lib/libbfd/Makefile : 1.39 558 descr 559 Gcc3 for sh5 gets an ICE compiling libbfd's elf32.c 560 and elf64.c at -O2. 561 Drop to -O1 for now when building for sh5. 562 kcah 563 564 565 hack gcc 3.3.2 on sh5 - fatal warning compiling function.c 566 cdate Sun Dec 7 19:44:05 GMT 2003 567 who scw 568 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 569 descr 570 Gcc3 for sh5 issues a warning: 571 .../gnu/dist/gcc/gcc/function.c:4742: warning: `and' of 572 mutually exclusive equal-tests is always 0. 573 This causes the build to fail because of -Werror. 574 Work-around by defining NOGCCERROR when building for sh5. 575 kcah 576 577 hack gcc 3.3.3 on sh5 - ICE compiling rbtdb.c and rbtdb64.c 578 cdate Thu Nov 11 00:35:33 UTC 2004 579 who he 580 file usr.sbin/bind/libdns/Makefile/1.2 581 descr 582 Gcc3 for sh5 gets an ICE compiling these files at -O2. 583 Drop to -O1 for now when building for sh5. 584 kcah 585 586 hack gcc 3.3.3 nb3 on sh5 - ICE compiling bsd-comp.c 587 cdate Thu May 25 23:05:20 UTC 2005 588 who he 589 file sys/lkm/net/bsdcomp/Makefile : 1.3 590 descr 591 Gcc3 for sh5 gets an ICE compiling this at -O2, 592 "could not split insn". Drop to -O1 for sh5. 593 kcah 594 595 hack gcc 3.3.3 nb3 on sh5 - ICE compiling strtod.c 596 cdate Tue Jan 31 10:51:52 GMT 2006 597 who scw 598 file lib/libc/gdtoa/Makefile.inc : 1.2 599 descr 600 Gcc3 for sh5 gets an ICE compiling this at -O2, 601 "could not split insn". Drop to -O1 for sh5. 602 kcah 603 604 port sun2 605 606 hack gcc 3.3.2/mdsetimage 607 cdate Tue Oct 28 18:43:05 EST 2003 608 who fredette 609 file gnu/usr.sbin/mdsetimage/Makefile : 1.15 610 descr 611 mdsetimage.c causes cc1 to barf for as-yet unknown reasons. 612 this hack uses -O0 to avoid the problem. 613 kcah 614 615 hack gcc 3.3.2/installboot/ffs.c 616 cdate Tue Oct 28 18:43:05 EST 2003 617 who fredette 618 file usr.sbin/installboot/Makefile : 1.26 619 descr 620 ffs.c causes cc1 to barf for as-yet unknown reasons. this 621 hack uses -O0 to avoid the problem. 622 kcah 623 624 625 port m68000 626 627 hack gcc 3.3.2/gcc/ra-colorize.c 628 cdate Wed Nov 5 11:03:13 EST 2003 629 who mrg 630 file gnu/usr.bin/gcc3/backend/Makefile : 1.11 631 descr 632 ra-colorize.c causes a whole spew of unreferenced .L* local 633 symbols. using -O0 (or even -O2 reportedly) avoids the problem. 634 Note this has been fixed in 3.3.3 at least on m68k, 635 but it hasn't been confirmed on sun2/m68000. 636 (it's too slow even on emulator and unlikely to build 637 toolchains on sun2 with its maximum 4MB RAM) 638 kcah 639 640 port sparc64 641 642 hack disable optimzations for uvm_bio.c on 32 bit kernels 643 cdate Sun Mar 21 14:14:04 MET 2004 644 who martin 645 file sys/arch/sparc64/conf/Makefile.sparc64 : 1.53-1.54 646 file sys/arch/sparc64/conf/files.sparc64 : 1.93 647 descr 648 The sparc compiler miscompiles uvm_bio.c when using 649 any optimization. This results in ubc_release panics. 650 kcah 651 652 port macppc 653 654 hack remove inline from rotate_{left,right} 655 cdate Tue Feb 22 13:43:25 EST 2005 656 who christos 657 file src/dist/bind/lib/dns/rbt.c 658 descr 659 The macppc gcc-3.3 compiler miscompiles rbt.c when these 660 functions are inlined. The error is: 661 .* named[368]: rbt.c:1584: INSIST(child != (void *)0) >failed 662 .* named[368]: exiting (due to assertion failure) 663 This is reportedly fixed in gcc-3.4 664 kcah 665 666 port hppa 667 668 hack hppa-gcc-3.3.3/grep/dfa.c 669 cdate Sun Aug 8 08:34:32 PDT 2004 670 who chs 671 file gnu/usr.bin/grep/grep/Makefile : 1.4 672 descr 673 gcc 3.3.3 generates bad code for dfa.c with -O2, 674 reduce optimization to -O1 to avoid the bug. 675 kcah 676 677 hack hppa-gcc-3.3.3 / make/buf.c 678 cdate Mon May 8 13:02:36 CEST 2006 679 who he 680 file usr.bin/make/Makefile : 1.34 681 descr 682 gcc 3.3.3 nb3 gets an "unrecognized insn" internal 683 compiler error when building this file with -O2, 684 reduce optimization to -O1 to avoid the bug. 685 kcah 686 687 hack hppa boot-from-disk memory corruption 688 cdate Wed May 18 06:56:07 PDT 2005 689 who chs 690 file src/sys/dev/scsipi/scsipiconf.h : 1.98 691 descr 692 There is some bug with DMA on hppa that corrupts scsipi_xfer 693 structures, but it only shows up when booting from disk. 694 For now, we'll add some padding to scsipi_xfer so that 695 the corrupted memory is not otherwise used. 696 kcah 697 698 port mips 699 700 hack mips-shared-linker-load-address 701 cdate Fri Oct 7 08:33:10 UTC 2005 702 who simonb 703 file src/sys/kern/exec_elf32.c : 1.107 704 descr 705 With COMPAT_16 or previous enabled (which enables 706 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 707 load and run at address 0. The check to fix this in 708 rev 1.107 only checks the first psection of the ELF 709 executable, which may not be loadable. A more correct 710 fix is to check the first loadable psection instead of 711 just the first psection. 712 kcah 713 714
Indexes created Wed Nov 05 19:10:08 GMT 2025