HACKS revision 1.63
1 # $NetBSD: HACKS,v 1.63 2006/05/12 13:32:50 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 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 usr.bin/awk/Makefile : 1.9 232 file usr.bin/ctags/Makefile : 1.8 233 file usr.bin/gzip/Makefile : 1.10 234 file usr.bin/ssh/sftp/Makefile : 1.10 235 file usr.bin/ssh/ssh/Makefile : 1.25 236 file usr.bin/vi/build/Makefile : 1.26 237 file usr.bin/telnet/Makefile : 1.40 238 file usr.bin/tn3270/tn3270/Makefile : 1.36 239 file usr.bin/tr/Makefile : 1.4 240 file usr.sbin/amd/amd/Makefile : 1.27 241 file usr.sbin/amd/amq/Makefile : 1.14 242 file usr.sbin/amd/libamu/Makefile : 1.20 243 file usr.sbin/amd/pawd/Makefile : 1.5 244 file usr.sbin/bind/Makefile.inc : 1.22 245 file usr.sbin/bind/libdns/Makefile : 1.3 246 file usr.sbin/bind/named/Makefile : 1.17 247 file usr.sbin/bootp/bootptest/Makefile : 1.2 248 file usr.sbin/chrtbl/Makefile : 1.6 249 file usr.sbin/cron/Makefile : 1.12 250 file usr.sbin/dhcp/Makefile.inc : 1.20 251 file usr.sbin/dumplfs/Makefile : 1.11 252 file usr.sbin/hprop/Makefile : 1.13 253 file usr.sbin/installboot/Makefile : 1.35 254 file usr.sbin/ipf/ipftest/Makefile : 1.32 255 file usr.sbin/isdn/isdnd/Makefile : 1.6 256 file usr.sbin/isdn/isdnmonitor/Makefile : 1.3 257 file usr.sbin/isdn/isdntel/Makefile : 1.2 258 file usr.sbin/isdn/isdntrace/Makefile : 126 259 file usr.sbin/mopd/common/Makefile : 1.10 260 file usr.sbin/mopd/mopd/Makefile : 1.9 261 file usr.sbin/mopd/mopprobe/Makefile : 1.7 262 file usr.sbin/makefs/Makefile : 1.17 263 file usr.sbin/mscdlabel/Makefile : 1.5 264 file usr.sbin/pkg_install/add/Makefile : 1.7 265 file usr.sbin/pkg_install/create/Makefile : 1.5 266 file usr.sbin/pkg_install/lib/Makefile : 1.28 267 file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11 268 file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5 269 file usr.sbin/pppd/Makefile.inc : 1.3 270 file usr.sbin/pppd/pppd/Makefile : 1.38 271 file usr.sbin/rarpd/Makefile : 1.10 272 file usr.sbin/rbootd/Makefile : 1.10 273 file usr.sbin/rpc.pcnfsd/Makefile : 1.17 274 file usr.sbin/rtadvd/Makefile : 1.9 275 file usr.sbin/tcpdump/Makefile : 1.42 276 file usr.sbin/wiconfig/Makefile : 1.3 277 file usr.sbin/ypserv/ypserv/Makefile : 1.16 278 descr 279 GCC 4.1 warns on pointer sign comparision/assignments and lots of 280 code does not conform. For now we use -Wno-pointer-sign and 281 -fno-strict-aliasing. 282 kcah 283 284 285 port vax 286 287 hack gcc 2.95/vax doesn't like abort being used as function pointer 288 cdate Tue Dec 13 05:54:50 GMT 2005 289 who jmc 290 file lib/libc/rpc/svc_vc.c 1.15 291 descr 292 Provide a local definition for abort which doesn't include 293 the noreturn attribute which trips up gcc 2.95 on vax. 294 295 hack gcc 2.95/vax doesn't have stdbool.h and gettext needs it 296 cdate Mon May 9 12:16:22 CDT 2005 297 who jmc 298 file gnu/usr.bin/gettext/Makefile.inc.prog 1.5 299 gnu/usr.bin/gettext/libgrep/Makefile 1.3 300 gnu/usr.bin/gettext/libnlspr/Makefile 1.5 301 gnu/usr.bin/gettext/libnlsut/Makefile 1.3 302 descr 303 The latest gettext assumes a C99 environment or at least 304 configure checks to work around this. As we don't use configure 305 provide a stdbool.h for vax builds locally in directories from 306 the template provided by the gettext code. 307 308 hack gcc 2.95/vax can't handle __used__ in mcount.c 309 cdate Fri May 6 14:30:53 CDT 2005 310 who jmc 311 file src/lib/libc/gmon/mcount.c 1.17 312 descr 313 Recent changes to mark this as __used__ to prevent optimization 314 away on sparc64 don't work on 2.95 vax. Ifdef'd back in the 315 old __unused__ if on vax. 316 317 hack gcc 2.95/vax cannot handle __builtin_ffs() 318 cdate Fri Aug 23 21:31:15 CEST 2002 319 who ragge 320 file sys/lib/libkern/libkern.h : 1.42 321 descr 322 __builtin_ffs() is ifdef'd away if __vax__. Matt Thomas has 323 added this feature to GCC 3 so it can be removed when switching. 324 325 326 hack gcc-vax-libbz2 327 mdate 27 Jun 2002 328 who thorpej 329 file lib/libbz2/Makefile 330 descr 331 libbz2 is mis-compiled with optimization with GCC 2.95.3 332 on VAX. -O0 works around this problem. 333 kcah 334 335 hack gawk 336 mdate 8 Nov 2003 337 who ragge 338 file gnu/usr.bin/gawk/Makefile 339 descr 340 gawk is mis-compiled with optimization with GCC 2.95.3 341 on VAX. -O0 works around this problem. 342 kcah 343 344 hack vax Toolchain bug 345 cdate 28 Mar 2003 346 who he 347 file sys/arch/vax/vax/intvec.S : 1.5 348 descr 349 Workaround for PR toolchain/20924. The assembler apparently 350 tries to range-check byte offsets when it doesn't have 351 sufficient information to make that decision. 352 Workaround uses `brw' instead of `brb' instruction. 353 kcah 354 355 hack vax gcc 2.95.3 -Wuninitialized workarounds 356 cdate 6 Nov 2003 357 who he 358 file sys/dev/bi/if_ni.c : 1.22 359 file sys/arch/vax/vax/ctu.c : 1.20 360 descr 361 Workaround for gcc 2.95.3 failing to detect that certain 362 variables will be initialized; so that this code compiles 363 with -Wuninitialized. Should be reviewed and possibly 364 reverted when gcc 3.3.2 is ready for vax. 365 kcah 366 367 hack vax gcc 2.95.3 structure initialization 368 cdat 13 May 2004 369 who cl 370 file sys/miscfs/kernfs/kernfs_vnops.c : 1.104 371 descr 372 Workaround for gcc 2.95.3 failing to initialize structures 373 and/or unions inside structures using nested designators. 374 Should be reverted when gcc >=3.3.3 is ready for vax. 375 kcah 376 377 hack vax gcc 2.95.3 needs -I. to build nslexer.c 378 cdat 6 Jun 2004 379 who mhitch 380 file lib/libc/arch/vax/Makefile.inc : 1.6 381 descr 382 It appears necessary to add -I. to CPPFLAGS when building 383 nslesxer.c. This may be caused by gcc 2.95.3 being used. 384 Should be reverted when a newer gcc is ready for vax. 385 kcah 386 387 hack vax gcc 2.95.3 doesn't understand "-std=c99" 388 cdat 5 April 2005 389 who tron 390 file src/share/mk/bsd.sys.mk 391 descr 392 We cannot use "-std=c99" for compiler warning level 4 and above 393 because gcc 2.95.3 doesn't support that option. 394 kcah 395 396 hack declare boolean_t in two IPF user-mode programs 397 cdate Tue Mar 7 19:19:20 CET 2006 398 who he 399 file dist/ipf/ipsend/iptests.c : 1.8 400 dist/ipf/ipsend/sock.c : 1.7 401 descr 402 The IPF user-mode programs ipsend and iptest first 403 include <sys/types.h> without _KERNEL defined, and 404 later include <sys/file.h> with _KERNEL defined. 405 This causes a build failure when building for vax, 406 since <sys/device.h> ends up being included without 407 bollean_t being defined by <sys/types.h>. 408 Build failure and further details documented in 409 PR#32907. 410 kcah 411 412 port sparc64 413 414 hack binutil-2.11-sparc64-pltrela 415 mdate 14 Aug 2001 416 who eeh 417 file libexec/ld.elf_so/arch/sparc64/mdreloc.c 418 descr 419 The first four PLT entries are reserved. There is some 420 disagreement whether they should have associated relocation 421 entries. Both the SPARC 32-bit and 64-bit ELF specifications 422 say that they should have relocation entries, but the 32-bit 423 SPARC binutils do not generate them, and now the 64-bit SPARC 424 binutils have stopped generating them too. 425 426 To provide binary compatibility, we will check the first entry, 427 if it is reserved it should not be of the type JMP_SLOT. If it 428 is JMP_SLOT, then the 4 reserved entries were not generated and 429 our index is 4 entries too far, so we frob the rela pointer. 430 kcah 431 432 433 port arm 434 435 hack gcc-unsigned-compare 436 cdate 09 Mar 2002 437 mdate 18 Mar 2002 438 who bjh21 439 file dist/bind/lib/nameser/ns_parse.c : 1.3 440 file dist/dhcp/minires/ns_parse.c : 1.3 441 file dist/dhcp/omapip/result.c : 1.2 442 file dist/dhcp/server/failover.c : 1.3 443 file gnu/dist/gawk/eval.c : 1.4 444 file gnu/dist/toolchain/bfd/bfd.c : 1.2 445 file gnu/dist/toolchain/bfd/format.c : 1.2 446 file gnu/dist/toolchain/gdb/target.c : 1.2 447 file sys/kern/vfs_subr.c : 1.172 448 descr When checking that a potentially-unsigned enum is >= 0, assign 449 it to an int first. This is necessary to avoid "comparison is 450 always true" warnings with -fshort-enums. Casting to an int 451 really should be enough, but turns out not to be. 452 kcah 453 454 hack gcc 3.3.2/arm sys/kern/uipc_socket.c 455 cdate Tue Oct 28 18:02:16 GMT 2003 456 who skrll 457 pr 23044 458 file sys/arch/arm/conf/Makefile.arm : 1.19 459 descr 460 Performing a build.sh tools on a CATS with NFS mounted 461 obj and src directories results in "panic: receive 1" 462 The hack is to compile sys/kern/uipc_socket.c with 463 -fno-strict-aliasing 464 kcah 465 466 467 port pc532 468 469 hack egcs-pc532-ip6_mroute 470 cdate 09 Jul 2002 471 who simonb 472 file sys/arch/pc532/conf/Makefile.pc532 : 1.70 473 file sys/arch/pc532/conf/files.pc532 : 1.47 474 descr 475 egcs 1.1.2 gets an "internal error--insn does not satisfy its 476 constraints" error compiling ip6_mroute.c with -O2 or greater. 477 -O1 works around this problem. 478 kcah 479 480 hack gcc-pc532-duffs_device 481 cdate Mon Oct 27 07:23:05 UTC 2003 482 who simonb 483 file sys/arch/pc532/conf/Makefile.pc532 : 1.71 484 file sys/arch/pc532/conf/files.pc532 : 1.52 485 pr GCC PR optimization/5230 486 descr 487 gcc incorrectly gives an "unreachable code at beginning of 488 switch statement" for a Duff's device construct in 489 arch/pc532/dev/ncr.c. There is no way to disable just this 490 warning, so -Wno-error is turned on for this file. 491 kcah 492 493 hack gcc332-cppmacro-ice 494 cdate Sun Dec 7 12:48:33 UTC 2003 495 who simonb 496 file gnu/usr.bin/gcc3/libcpp/Makefile : 1.2 497 descr 498 gcc 3.3.2 gets an ICE when compiling cppmacro.c with -O2. 499 The hack is to use -O1 for this file. Fixed in gcc 500 -current mainline, unable to work out where the fix is 501 right now. 502 kcah 503 504 505 port sh3 506 507 hack gcc-sh3-sed 508 mdate 23 Apr 2002 509 who thorpej 510 file usr.bin/sed/Makefile : 1.9 : 9 : 13 511 descr 512 The in-tree GCC 2.95.3-based compiler ICEs when building 513 with optimization for SuperH. Hack is to build with -O0. 514 kcah 515 516 517 port sh5 518 519 hack SuperH SH5 Toolchain Bugs 520 cdate 11 Jul 2002 521 who scw 522 file usr.sbin/ndbootd/ndbootd.c : 1.6 523 file usr.sbin/traceroute/traceroute.c : 1.48 524 descr 525 The SuperH SH5 toolchain (2.97-sh5-010522) gets an internal 526 compiler error when assigning a bit-wise inverted value 527 under some circumstances. 528 Work around it by splitting the statement into two. 529 kcah 530 531 hack SuperH SH5 Toolchain Bugs 532 cdate 17 May 2003 533 who scw 534 file lib/libpthread/pthread_lock.c : 1.7 535 descr 536 The SuperH SH5 toolchain generates incorrect PIC code when 537 faced with a symbol which is declared extern, but has local 538 scope due to being defined within an asm() statement (without 539 being declared .globl in that statement). Work around it by 540 adding the .globl. 541 kcah 542 543 hack gcc 3.3.2 on sh5 - ICE compiling reload1.c at -O2 544 cdate Sun Dec 7 19:44:05 GMT 2003 545 who scw 546 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 547 descr 548 Gcc3 for sh5 gets an ICE compiling reload1.c at -O2. 549 Drop to -O1 for now when building for sh5. 550 kcah 551 552 hack gcc 3.3.2 on sh5 - ICE compiling elf32.c/elf64.c at -O2 553 cdate Sun Dec 7 21:10:46 GMT 2003 554 who scw 555 file gnu/lib/libbfd/Makefile : 1.39 556 descr 557 Gcc3 for sh5 gets an ICE compiling libbfd's elf32.c 558 and elf64.c at -O2. 559 Drop to -O1 for now when building for sh5. 560 kcah 561 562 563 hack gcc 3.3.2 on sh5 - fatal warning compiling function.c 564 cdate Sun Dec 7 19:44:05 GMT 2003 565 who scw 566 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 567 descr 568 Gcc3 for sh5 issues a warning: 569 .../gnu/dist/gcc/gcc/function.c:4742: warning: `and' of 570 mutually exclusive equal-tests is always 0. 571 This causes the build to fail because of -Werror. 572 Work-around by defining NOGCCERROR when building for sh5. 573 kcah 574 575 hack gcc 3.3.3 on sh5 - ICE compiling rbtdb.c and rbtdb64.c 576 cdate Thu Nov 11 00:35:33 UTC 2004 577 who he 578 file usr.sbin/bind/libdns/Makefile/1.2 579 descr 580 Gcc3 for sh5 gets an ICE compiling these files at -O2. 581 Drop to -O1 for now when building for sh5. 582 kcah 583 584 hack gcc 3.3.3 nb3 on sh5 - ICE compiling bsd-comp.c 585 cdate Thu May 25 23:05:20 UTC 2005 586 who he 587 file sys/lkm/net/bsdcomp/Makefile : 1.3 588 descr 589 Gcc3 for sh5 gets an ICE compiling this at -O2, 590 "could not split insn". Drop to -O1 for sh5. 591 kcah 592 593 hack gcc 3.3.3 nb3 on sh5 - ICE compiling strtod.c 594 cdate Tue Jan 31 10:51:52 GMT 2006 595 who scw 596 file lib/libc/gdtoa/Makefile.inc : 1.2 597 descr 598 Gcc3 for sh5 gets an ICE compiling this at -O2, 599 "could not split insn". Drop to -O1 for sh5. 600 kcah 601 602 port sun2 603 604 hack gcc 3.3.2/mdsetimage 605 cdate Tue Oct 28 18:43:05 EST 2003 606 who fredette 607 file gnu/usr.sbin/mdsetimage/Makefile : 1.15 608 descr 609 mdsetimage.c causes cc1 to barf for as-yet unknown reasons. 610 this hack uses -O0 to avoid the problem. 611 kcah 612 613 hack gcc 3.3.2/installboot/ffs.c 614 cdate Tue Oct 28 18:43:05 EST 2003 615 who fredette 616 file usr.sbin/installboot/Makefile : 1.26 617 descr 618 ffs.c causes cc1 to barf for as-yet unknown reasons. this 619 hack uses -O0 to avoid the problem. 620 kcah 621 622 623 port m68000 624 625 hack gcc 3.3.2/gcc/ra-colorize.c 626 cdate Wed Nov 5 11:03:13 EST 2003 627 who mrg 628 file gnu/usr.bin/gcc3/backend/Makefile : 1.11 629 descr 630 ra-colorize.c causes a whole spew of unreferenced .L* local 631 symbols. using -O0 (or even -O2 reportedly) avoids the problem. 632 Note this has been fixed in 3.3.3 at least on m68k, 633 but it hasn't been confirmed on sun2/m68000. 634 (it's too slow even on emulator and unlikely to build 635 toolchains on sun2 with its maximum 4MB RAM) 636 kcah 637 638 port sparc64 639 640 hack disable optimzations for uvm_bio.c on 32 bit kernels 641 cdate Sun Mar 21 14:14:04 MET 2004 642 who martin 643 file sys/arch/sparc64/conf/Makefile.sparc64 : 1.53-1.54 644 file sys/arch/sparc64/conf/files.sparc64 : 1.93 645 descr 646 The sparc compiler miscompiles uvm_bio.c when using 647 any optimization. This results in ubc_release panics. 648 kcah 649 650 port macppc 651 652 hack remove inline from rotate_{left,right} 653 cdate Tue Feb 22 13:43:25 EST 2005 654 who christos 655 file src/dist/bind/lib/dns/rbt.c 656 descr 657 The macppc gcc-3.3 compiler miscompiles rbt.c when these 658 functions are inlined. The error is: 659 .* named[368]: rbt.c:1584: INSIST(child != (void *)0) >failed 660 .* named[368]: exiting (due to assertion failure) 661 This is reportedly fixed in gcc-3.4 662 kcah 663 664 port hppa 665 666 hack hppa-gcc-3.3.3/grep/dfa.c 667 cdate Sun Aug 8 08:34:32 PDT 2004 668 who chs 669 file gnu/usr.bin/grep/grep/Makefile : 1.4 670 descr 671 gcc 3.3.3 generates bad code for dfa.c with -O2, 672 reduce optimization to -O1 to avoid the bug. 673 kcah 674 675 hack hppa-gcc-3.3.3 / make/buf.c 676 cdate Mon May 8 13:02:36 CEST 2006 677 who he 678 file usr.bin/make/Makefile : 1.34 679 descr 680 gcc 3.3.3 nb3 gets an "unrecognized insn" internal 681 compiler error when building this file with -O2, 682 reduce optimization to -O1 to avoid the bug. 683 kcah 684 685 hack hppa boot-from-disk memory corruption 686 cdate Wed May 18 06:56:07 PDT 2005 687 who chs 688 file src/sys/dev/scsipi/scsipiconf.h : 1.98 689 descr 690 There is some bug with DMA on hppa that corrupts scsipi_xfer 691 structures, but it only shows up when booting from disk. 692 For now, we'll add some padding to scsipi_xfer so that 693 the corrupted memory is not otherwise used. 694 kcah 695 696 port mips 697 698 hack mips-shared-linker-load-address 699 cdate Fri Oct 7 08:33:10 UTC 2005 700 who simonb 701 file src/sys/kern/exec_elf32.c : 1.107 702 descr 703 With COMPAT_16 or previous enabled (which enables 704 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 705 load and run at address 0. The check to fix this in 706 rev 1.107 only checks the first psection of the ELF 707 executable, which may not be loadable. A more correct 708 fix is to check the first loadable psection instead of 709 just the first psection. 710 kcah 711 712
Indexes created Sat Aug 15 00:25:12 UTC 2026