HACKS revision 1.62
1 # $NetBSD: HACKS,v 1.62 2006/05/12 07:25:10 he 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 descr 118 Gcc 3.3.3 gets some -Wuninitialized warnings wrong. This is 119 just one of many in the tree, marked with 120 /* XXX -Wuninitialized [arch] */ 121 in the source. 122 kcah 123 124 hack gcc4 wrong uninitialised variable 125 mdate 10 May 2006 126 who mrg 127 file bin/ksh/eval.c : 1.6 128 file bin/sh/histedit.c : 1.39 129 file bin/sh/parser.c : 1.60 130 file bin/systrace/systrace.c : 1.33 131 file crypto/dist/heimdal/kdc/524.c : 1.10 132 file crypto/dist/ssh/sftp.c : 1.20 133 file crypto/dist/ssh/ssh-keysign.c : 1.11 134 file dist/ipf/lib/hostname.c : 1.2 135 file dist/ipf/tools/ipmon.c : 1.8 136 file dist/ntp/ntpd/refclock_shm.c : 1.4 137 file dist/ntp/sntp/timing.c : 1.3 138 file dist/pppd/pppstats/pppstats.c : 1.3 139 file dist/smbfs/lib/smb/rap.c : 1.6 140 file dist/tcpdump/print-zephyr.c : 1.5 141 file gnu/libexec/uucp/uucico/uucico.c : 1.6 142 file lib/libc/citrus/citrus_csmapper.c : 1.6 143 file lib/libc/citrus/citrus_pivot_factory.c : 1.5 144 file lib/libc/inet/inet_cidr_ntop.c : 1.3 145 file lib/libc/inet/inet_ntop.c : 1.3 146 file lib/libc/stdio/vfwprintf.c : 1.8 147 file libexec/ld.elf_so/arch/sparc64/mdreloc.c : 1.39 148 file sbin/fsck_ext2fs/dir.c : 1.19 149 file sbin/routed/rtquery/rtquery.c : 1.18 150 file sys/crypto/cast128/cast128.c : 1.9 151 file sys/ddb/db_command.c : 1.86 152 file sys/dev/cardbus/cardbus_map.c : 1.xxx 153 file sys/dev/fss.c : 1.25 154 file sys/dev/ic/mb86950.c : 1.xxx 155 file sys/dev/ic/midway.c : 1.71 156 file sys/dev/usb/ohci.c : 1.xxx 157 file sys/dev/usb/uhci.c : 1.xxx 158 file sys/dev/pci/cmpci.c : 1.xxx 159 file sys/dev/pci/machfb.c : 1.45 160 file sys/dist/ipf/netinet/ip_nat.c : 1.10 161 file sys/dist/ipf/netinet/ip_rpcb_pxy.c : 1.8 162 file sys/dist/pf/net/pf.c : 1.22 163 file sys/fs/udf/udf_vnops.c : 1.4 164 file sys/kern/kern_sig.c : 1.219 165 file sys/kern/tty.c : 1.181 166 file sys/net/bpf.c : 1.116 167 file sys/net/zlib.c : 1.26 168 file sys/netccitt/if_x25subr.c : 1.xxx 169 file sys/netinet/in.c : 1.107 170 file sys/netsmb/smb_smb.c : 1.27 171 file sys/netsmb/smb_trantcp.c : 1.22 172 file sys/nfs/nfs_serv.c : 1.108 173 file sys/nfs/nfs_socket.c : 1.129 174 file sys/nfs/nfs_syscalls.c : 1.91 175 file sys/ufs/lfs/lfs_vfsops.c : 1.207 [also (char *)] 176 file usr.bin/ftp/ftp.c : 1.140 177 file usr.bin/find/function.c : 1.54 178 file usr.bin/mail/tty.c : 1.20 179 file usr.bin/nl/nl.c : 1.7 180 file usr.bin/systat/keyboard.c : 1.23 181 file usr.bin/usbhidctl/usbhid.c : 1.29 182 file usr.bin/vi/cl/cl_read.c : 1.5 183 file usr.bin/vi/ex/ex_cscope.c : 1.12 184 file usr.bin/vi/ex/ex_tag.c : 1.19 185 file usr.bin/vi/vi/v_txt.c : 1.15 186 file usr.sbin/altq/altqstat/qdisc_rio.c : 1.4 187 file usr.sbin/cron/do_command.c : 1.19 188 file usr.sbin/timed/timed/slave.c : 1.15 189 descr 190 GCC 4.1 gets many uninitialised variable warnings wrong. We should 191 really audit all the old hacks like this when older compilers are 192 removed from the tree, as many are probably no longer required. 193 kcah 194 195 hack gcc4 pointer sign and strict aliasing problems 196 mdate 10 May 2006 197 who mrg 198 file bin/ed/Makefile : 1.33 199 file bin/systrace/Makefile : 1.12 200 file games/bcd/Makefile : 1.5 201 file games/dab/Makefile : 1.5 202 file games/larn/Makefile : 1.17 203 file games/pom/Makefile : 1.5 204 file lib/libasn1/Makefile : 1.26 205 file lib/libcrypt/Makefile : 1.17 206 file lib/libgssapi/Makefile : 1.16 207 file lib/libhdb/Makefile : 1.20 208 file lib/libkadm5clnt/Makefile : 1.21 209 file lib/libkadm5srv/Makefile : 1.25 210 file lib/libkrb5/Makefile : 1.35 211 file lib/libssh/Makefile : 1.6 212 file lib/libtelnet/Makefile : 1.26 213 file libexec/getty/Makefile : 1.14 214 file libexec/kadmind/Makefile : 1.19 215 file libexec/kpasswdd/Makefile : 1.14 216 file sbin/atactl/Makefile : 1.3 217 file sbin/cgdconfig/Makefile : 1.7 218 file sbin/clri/Makefile : 1.13 219 file sbin/dkctl/Makefile : 1.4 220 file sbin/dump/Makefile : 1.33 221 file sbin/fdisk/Makefile : 1.35 222 file sbin/fsck_ext2fs/Makefile : 1.11 223 file sbin/fsck_ffs/Makefile : 1.29 224 file sbin/fsdb/Makefile : 1.18 225 file sbin/mount_smbfs/Makefile : 1.4 226 file sbin/newfs/Makefile : 1.30 227 file sbin/newfs_sysvbfs/Makefile : 1.2 228 file sbin/restore/Makefile : 1.23 229 file sbin/veriexecctl/Makefile : 1.11 230 file usr.bin/awk/Makefile : 1.9 231 file usr.bin/ctags/Makefile : 1.8 232 file usr.bin/gzip/Makefile : 1.10 233 file usr.bin/ssh/sftp/Makefile : 1.10 234 file usr.bin/ssh/ssh/Makefile : 1.25 235 file usr.bin/vi/build/Makefile : 1.26 236 file usr.bin/telnet/Makefile : 1.40 237 file usr.bin/tn3270/tn3270/Makefile : 1.36 238 file usr.bin/tr/Makefile : 1.4 239 file usr.sbin/amd/amd/Makefile : 1.27 240 file usr.sbin/amd/amq/Makefile : 1.14 241 file usr.sbin/amd/libamu/Makefile : 1.20 242 file usr.sbin/amd/pawd/Makefile : 1.5 243 file usr.sbin/bind/Makefile.inc : 1.22 244 file usr.sbin/bind/libdns/Makefile : 1.3 245 file usr.sbin/bind/named/Makefile : 1.17 246 file usr.sbin/bootp/bootptest/Makefile : 1.2 247 file usr.sbin/chrtbl/Makefile : 1.6 248 file usr.sbin/cron/Makefile : 1.12 249 file usr.sbin/dhcp/Makefile.inc : 1.20 250 file usr.sbin/dumplfs/Makefile : 1.11 251 file usr.sbin/hprop/Makefile : 1.13 252 file usr.sbin/installboot/Makefile : 1.35 253 file usr.sbin/ipf/ipftest/Makefile : 1.32 254 file usr.sbin/isdn/isdnd/Makefile : 1.6 255 file usr.sbin/isdn/isdnmonitor/Makefile : 1.3 256 file usr.sbin/isdn/isdntel/Makefile : 1.2 257 file usr.sbin/isdn/isdntrace/Makefile : 126 258 file usr.sbin/mopd/common/Makefile : 1.10 259 file usr.sbin/mopd/mopd/Makefile : 1.9 260 file usr.sbin/mopd/mopprobe/Makefile : 1.7 261 file usr.sbin/makefs/Makefile : 1.17 262 file usr.sbin/mscdlabel/Makefile : 1.5 263 file usr.sbin/pkg_install/add/Makefile : 1.7 264 file usr.sbin/pkg_install/create/Makefile : 1.5 265 file usr.sbin/pkg_install/lib/Makefile : 1.28 266 file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11 267 file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5 268 file usr.sbin/pppd/Makefile.inc : 1.3 269 file usr.sbin/pppd/pppd/Makefile : 1.38 270 file usr.sbin/rarpd/Makefile : 1.10 271 file usr.sbin/rbootd/Makefile : 1.10 272 file usr.sbin/rpc.pcnfsd/Makefile : 1.17 273 file usr.sbin/rtadvd/Makefile : 1.9 274 file usr.sbin/tcpdump/Makefile : 1.42 275 file usr.sbin/wiconfig/Makefile : 1.3 276 file usr.sbin/ypserv/ypserv/Makefile : 1.16 277 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 282 283 284 port vax 285 286 hack gcc 2.95/vax doesn't like abort being used as function pointer 287 cdate Tue Dec 13 05:54:50 GMT 2005 288 who jmc 289 file lib/libc/rpc/svc_vc.c 1.15 290 descr 291 Provide a local definition for abort which doesn't include 292 the noreturn attribute which trips up gcc 2.95 on vax. 293 294 hack gcc 2.95/vax doesn't have stdbool.h and gettext needs it 295 cdate Mon May 9 12:16:22 CDT 2005 296 who jmc 297 file gnu/usr.bin/gettext/Makefile.inc.prog 1.5 298 gnu/usr.bin/gettext/libgrep/Makefile 1.3 299 gnu/usr.bin/gettext/libnlspr/Makefile 1.5 300 gnu/usr.bin/gettext/libnlsut/Makefile 1.3 301 descr 302 The latest gettext assumes a C99 environment or at least 303 configure checks to work around this. As we don't use configure 304 provide a stdbool.h for vax builds locally in directories from 305 the template provided by the gettext code. 306 307 hack gcc 2.95/vax can't handle __used__ in mcount.c 308 cdate Fri May 6 14:30:53 CDT 2005 309 who jmc 310 file src/lib/libc/gmon/mcount.c 1.17 311 descr 312 Recent changes to mark this as __used__ to prevent optimization 313 away on sparc64 don't work on 2.95 vax. Ifdef'd back in the 314 old __unused__ if on vax. 315 316 hack gcc 2.95/vax cannot handle __builtin_ffs() 317 cdate Fri Aug 23 21:31:15 CEST 2002 318 who ragge 319 file sys/lib/libkern/libkern.h : 1.42 320 descr 321 __builtin_ffs() is ifdef'd away if __vax__. Matt Thomas has 322 added this feature to GCC 3 so it can be removed when switching. 323 324 325 hack gcc-vax-libbz2 326 mdate 27 Jun 2002 327 who thorpej 328 file lib/libbz2/Makefile 329 descr 330 libbz2 is mis-compiled with optimization with GCC 2.95.3 331 on VAX. -O0 works around this problem. 332 kcah 333 334 hack gawk 335 mdate 8 Nov 2003 336 who ragge 337 file gnu/usr.bin/gawk/Makefile 338 descr 339 gawk is mis-compiled with optimization with GCC 2.95.3 340 on VAX. -O0 works around this problem. 341 kcah 342 343 hack vax Toolchain bug 344 cdate 28 Mar 2003 345 who he 346 file sys/arch/vax/vax/intvec.S : 1.5 347 descr 348 Workaround for PR toolchain/20924. The assembler apparently 349 tries to range-check byte offsets when it doesn't have 350 sufficient information to make that decision. 351 Workaround uses `brw' instead of `brb' instruction. 352 kcah 353 354 hack vax gcc 2.95.3 -Wuninitialized workarounds 355 cdate 6 Nov 2003 356 who he 357 file sys/dev/bi/if_ni.c : 1.22 358 file sys/arch/vax/vax/ctu.c : 1.20 359 descr 360 Workaround for gcc 2.95.3 failing to detect that certain 361 variables will be initialized; so that this code compiles 362 with -Wuninitialized. Should be reviewed and possibly 363 reverted when gcc 3.3.2 is ready for vax. 364 kcah 365 366 hack vax gcc 2.95.3 structure initialization 367 cdat 13 May 2004 368 who cl 369 file sys/miscfs/kernfs/kernfs_vnops.c : 1.104 370 descr 371 Workaround for gcc 2.95.3 failing to initialize structures 372 and/or unions inside structures using nested designators. 373 Should be reverted when gcc >=3.3.3 is ready for vax. 374 kcah 375 376 hack vax gcc 2.95.3 needs -I. to build nslexer.c 377 cdat 6 Jun 2004 378 who mhitch 379 file lib/libc/arch/vax/Makefile.inc : 1.6 380 descr 381 It appears necessary to add -I. to CPPFLAGS when building 382 nslesxer.c. This may be caused by gcc 2.95.3 being used. 383 Should be reverted when a newer gcc is ready for vax. 384 kcah 385 386 hack vax gcc 2.95.3 doesn't understand "-std=c99" 387 cdat 5 April 2005 388 who tron 389 file src/share/mk/bsd.sys.mk 390 descr 391 We cannot use "-std=c99" for compiler warning level 4 and above 392 because gcc 2.95.3 doesn't support that option. 393 kcah 394 395 hack declare boolean_t in two IPF user-mode programs 396 cdate Tue Mar 7 19:19:20 CET 2006 397 who he 398 file dist/ipf/ipsend/iptests.c : 1.8 399 dist/ipf/ipsend/sock.c : 1.7 400 descr 401 The IPF user-mode programs ipsend and iptest first 402 include <sys/types.h> without _KERNEL defined, and 403 later include <sys/file.h> with _KERNEL defined. 404 This causes a build failure when building for vax, 405 since <sys/device.h> ends up being included without 406 bollean_t being defined by <sys/types.h>. 407 Build failure and further details documented in 408 PR#32907. 409 kcah 410 411 port sparc64 412 413 hack binutil-2.11-sparc64-pltrela 414 mdate 14 Aug 2001 415 who eeh 416 file libexec/ld.elf_so/arch/sparc64/mdreloc.c 417 descr 418 The first four PLT entries are reserved. There is some 419 disagreement whether they should have associated relocation 420 entries. Both the SPARC 32-bit and 64-bit ELF specifications 421 say that they should have relocation entries, but the 32-bit 422 SPARC binutils do not generate them, and now the 64-bit SPARC 423 binutils have stopped generating them too. 424 425 To provide binary compatibility, we will check the first entry, 426 if it is reserved it should not be of the type JMP_SLOT. If it 427 is JMP_SLOT, then the 4 reserved entries were not generated and 428 our index is 4 entries too far, so we frob the rela pointer. 429 kcah 430 431 432 port arm 433 434 hack gcc-unsigned-compare 435 cdate 09 Mar 2002 436 mdate 18 Mar 2002 437 who bjh21 438 file dist/bind/lib/nameser/ns_parse.c : 1.3 439 file dist/dhcp/minires/ns_parse.c : 1.3 440 file dist/dhcp/omapip/result.c : 1.2 441 file dist/dhcp/server/failover.c : 1.3 442 file gnu/dist/gawk/eval.c : 1.4 443 file gnu/dist/toolchain/bfd/bfd.c : 1.2 444 file gnu/dist/toolchain/bfd/format.c : 1.2 445 file gnu/dist/toolchain/gdb/target.c : 1.2 446 file sys/kern/vfs_subr.c : 1.172 447 descr When checking that a potentially-unsigned enum is >= 0, assign 448 it to an int first. This is necessary to avoid "comparison is 449 always true" warnings with -fshort-enums. Casting to an int 450 really should be enough, but turns out not to be. 451 kcah 452 453 hack gcc 3.3.2/arm sys/kern/uipc_socket.c 454 cdate Tue Oct 28 18:02:16 GMT 2003 455 who skrll 456 pr 23044 457 file sys/arch/arm/conf/Makefile.arm : 1.19 458 descr 459 Performing a build.sh tools on a CATS with NFS mounted 460 obj and src directories results in "panic: receive 1" 461 The hack is to compile sys/kern/uipc_socket.c with 462 -fno-strict-aliasing 463 kcah 464 465 466 port pc532 467 468 hack egcs-pc532-ip6_mroute 469 cdate 09 Jul 2002 470 who simonb 471 file sys/arch/pc532/conf/Makefile.pc532 : 1.70 472 file sys/arch/pc532/conf/files.pc532 : 1.47 473 descr 474 egcs 1.1.2 gets an "internal error--insn does not satisfy its 475 constraints" error compiling ip6_mroute.c with -O2 or greater. 476 -O1 works around this problem. 477 kcah 478 479 hack gcc-pc532-duffs_device 480 cdate Mon Oct 27 07:23:05 UTC 2003 481 who simonb 482 file sys/arch/pc532/conf/Makefile.pc532 : 1.71 483 file sys/arch/pc532/conf/files.pc532 : 1.52 484 pr GCC PR optimization/5230 485 descr 486 gcc incorrectly gives an "unreachable code at beginning of 487 switch statement" for a Duff's device construct in 488 arch/pc532/dev/ncr.c. There is no way to disable just this 489 warning, so -Wno-error is turned on for this file. 490 kcah 491 492 hack gcc332-cppmacro-ice 493 cdate Sun Dec 7 12:48:33 UTC 2003 494 who simonb 495 file gnu/usr.bin/gcc3/libcpp/Makefile : 1.2 496 descr 497 gcc 3.3.2 gets an ICE when compiling cppmacro.c with -O2. 498 The hack is to use -O1 for this file. Fixed in gcc 499 -current mainline, unable to work out where the fix is 500 right now. 501 kcah 502 503 504 port sh3 505 506 hack gcc-sh3-sed 507 mdate 23 Apr 2002 508 who thorpej 509 file usr.bin/sed/Makefile : 1.9 : 9 : 13 510 descr 511 The in-tree GCC 2.95.3-based compiler ICEs when building 512 with optimization for SuperH. Hack is to build with -O0. 513 kcah 514 515 516 port sh5 517 518 hack SuperH SH5 Toolchain Bugs 519 cdate 11 Jul 2002 520 who scw 521 file usr.sbin/ndbootd/ndbootd.c : 1.6 522 file usr.sbin/traceroute/traceroute.c : 1.48 523 descr 524 The SuperH SH5 toolchain (2.97-sh5-010522) gets an internal 525 compiler error when assigning a bit-wise inverted value 526 under some circumstances. 527 Work around it by splitting the statement into two. 528 kcah 529 530 hack SuperH SH5 Toolchain Bugs 531 cdate 17 May 2003 532 who scw 533 file lib/libpthread/pthread_lock.c : 1.7 534 descr 535 The SuperH SH5 toolchain generates incorrect PIC code when 536 faced with a symbol which is declared extern, but has local 537 scope due to being defined within an asm() statement (without 538 being declared .globl in that statement). Work around it by 539 adding the .globl. 540 kcah 541 542 hack gcc 3.3.2 on sh5 - ICE compiling reload1.c at -O2 543 cdate Sun Dec 7 19:44:05 GMT 2003 544 who scw 545 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 546 descr 547 Gcc3 for sh5 gets an ICE compiling reload1.c at -O2. 548 Drop to -O1 for now when building for sh5. 549 kcah 550 551 hack gcc 3.3.2 on sh5 - ICE compiling elf32.c/elf64.c at -O2 552 cdate Sun Dec 7 21:10:46 GMT 2003 553 who scw 554 file gnu/lib/libbfd/Makefile : 1.39 555 descr 556 Gcc3 for sh5 gets an ICE compiling libbfd's elf32.c 557 and elf64.c at -O2. 558 Drop to -O1 for now when building for sh5. 559 kcah 560 561 562 hack gcc 3.3.2 on sh5 - fatal warning compiling function.c 563 cdate Sun Dec 7 19:44:05 GMT 2003 564 who scw 565 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 566 descr 567 Gcc3 for sh5 issues a warning: 568 .../gnu/dist/gcc/gcc/function.c:4742: warning: `and' of 569 mutually exclusive equal-tests is always 0. 570 This causes the build to fail because of -Werror. 571 Work-around by defining NOGCCERROR when building for sh5. 572 kcah 573 574 hack gcc 3.3.3 on sh5 - ICE compiling rbtdb.c and rbtdb64.c 575 cdate Thu Nov 11 00:35:33 UTC 2004 576 who he 577 file usr.sbin/bind/libdns/Makefile/1.2 578 descr 579 Gcc3 for sh5 gets an ICE compiling these files at -O2. 580 Drop to -O1 for now when building for sh5. 581 kcah 582 583 hack gcc 3.3.3 nb3 on sh5 - ICE compiling bsd-comp.c 584 cdate Thu May 25 23:05:20 UTC 2005 585 who he 586 file sys/lkm/net/bsdcomp/Makefile : 1.3 587 descr 588 Gcc3 for sh5 gets an ICE compiling this at -O2, 589 "could not split insn". Drop to -O1 for sh5. 590 kcah 591 592 hack gcc 3.3.3 nb3 on sh5 - ICE compiling strtod.c 593 cdate Tue Jan 31 10:51:52 GMT 2006 594 who scw 595 file lib/libc/gdtoa/Makefile.inc : 1.2 596 descr 597 Gcc3 for sh5 gets an ICE compiling this at -O2, 598 "could not split insn". Drop to -O1 for sh5. 599 kcah 600 601 port sun2 602 603 hack gcc 3.3.2/mdsetimage 604 cdate Tue Oct 28 18:43:05 EST 2003 605 who fredette 606 file gnu/usr.sbin/mdsetimage/Makefile : 1.15 607 descr 608 mdsetimage.c causes cc1 to barf for as-yet unknown reasons. 609 this hack uses -O0 to avoid the problem. 610 kcah 611 612 hack gcc 3.3.2/installboot/ffs.c 613 cdate Tue Oct 28 18:43:05 EST 2003 614 who fredette 615 file usr.sbin/installboot/Makefile : 1.26 616 descr 617 ffs.c causes cc1 to barf for as-yet unknown reasons. this 618 hack uses -O0 to avoid the problem. 619 kcah 620 621 622 port m68000 623 624 hack gcc 3.3.2/gcc/ra-colorize.c 625 cdate Wed Nov 5 11:03:13 EST 2003 626 who mrg 627 file gnu/usr.bin/gcc3/backend/Makefile : 1.11 628 descr 629 ra-colorize.c causes a whole spew of unreferenced .L* local 630 symbols. using -O0 (or even -O2 reportedly) avoids the problem. 631 Note this has been fixed in 3.3.3 at least on m68k, 632 but it hasn't been confirmed on sun2/m68000. 633 (it's too slow even on emulator and unlikely to build 634 toolchains on sun2 with its maximum 4MB RAM) 635 kcah 636 637 port sparc64 638 639 hack disable optimzations for uvm_bio.c on 32 bit kernels 640 cdate Sun Mar 21 14:14:04 MET 2004 641 who martin 642 file sys/arch/sparc64/conf/Makefile.sparc64 : 1.53-1.54 643 file sys/arch/sparc64/conf/files.sparc64 : 1.93 644 descr 645 The sparc compiler miscompiles uvm_bio.c when using 646 any optimization. This results in ubc_release panics. 647 kcah 648 649 port macppc 650 651 hack remove inline from rotate_{left,right} 652 cdate Tue Feb 22 13:43:25 EST 2005 653 who christos 654 file src/dist/bind/lib/dns/rbt.c 655 descr 656 The macppc gcc-3.3 compiler miscompiles rbt.c when these 657 functions are inlined. The error is: 658 .* named[368]: rbt.c:1584: INSIST(child != (void *)0) >failed 659 .* named[368]: exiting (due to assertion failure) 660 This is reportedly fixed in gcc-3.4 661 kcah 662 663 port hppa 664 665 hack hppa-gcc-3.3.3/grep/dfa.c 666 cdate Sun Aug 8 08:34:32 PDT 2004 667 who chs 668 file gnu/usr.bin/grep/grep/Makefile : 1.4 669 descr 670 gcc 3.3.3 generates bad code for dfa.c with -O2, 671 reduce optimization to -O1 to avoid the bug. 672 kcah 673 674 hack hppa-gcc-3.3.3 / make/buf.c 675 cdate Mon May 8 13:02:36 CEST 2006 676 who he 677 file usr.bin/make/Makefile : 1.34 678 descr 679 gcc 3.3.3 nb3 gets an "unrecognized insn" internal 680 compiler error when building this file with -O2, 681 reduce optimization to -O1 to avoid the bug. 682 kcah 683 684 hack hppa boot-from-disk memory corruption 685 cdate Wed May 18 06:56:07 PDT 2005 686 who chs 687 file src/sys/dev/scsipi/scsipiconf.h : 1.98 688 descr 689 There is some bug with DMA on hppa that corrupts scsipi_xfer 690 structures, but it only shows up when booting from disk. 691 For now, we'll add some padding to scsipi_xfer so that 692 the corrupted memory is not otherwise used. 693 kcah 694 695 port mips 696 697 hack mips-shared-linker-load-address 698 cdate Fri Oct 7 08:33:10 UTC 2005 699 who simonb 700 file src/sys/kern/exec_elf32.c : 1.107 701 descr 702 With COMPAT_16 or previous enabled (which enables 703 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 704 load and run at address 0. The check to fix this in 705 rev 1.107 only checks the first psection of the ELF 706 executable, which may not be loadable. A more correct 707 fix is to check the first loadable psection instead of 708 just the first psection. 709 kcah 710 711
Indexes created Wed Nov 05 22:09:55 GMT 2025