HACKS revision 1.67
1 # $NetBSD: HACKS,v 1.67 2006/05/17 17:09:43 christos 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 The problem is that it does not recognize initialization via function 195 call pointer. I.e. 196 int p; 197 foo(&p); 198 does not mark p as initialized. 199 kcah 200 201 hack gcc4 pointer sign and strict aliasing problems 202 mdate 10 May 2006 203 who mrg 204 file bin/ed/Makefile : 1.33 205 file bin/systrace/Makefile : 1.12 206 file games/bcd/Makefile : 1.5 207 file games/dab/Makefile : 1.5 208 file games/larn/Makefile : 1.17 209 file games/pom/Makefile : 1.5 210 file lib/libasn1/Makefile : 1.26 211 file lib/libcrypt/Makefile : 1.17 212 file lib/libgssapi/Makefile : 1.16 213 file lib/libhdb/Makefile : 1.20 214 file lib/libkadm5clnt/Makefile : 1.21 215 file lib/libkadm5srv/Makefile : 1.25 216 file lib/libkrb5/Makefile : 1.35 217 file lib/libssh/Makefile : 1.6 218 file lib/libtelnet/Makefile : 1.26 219 file libexec/getty/Makefile : 1.14 220 file libexec/kadmind/Makefile : 1.19 221 file libexec/kpasswdd/Makefile : 1.14 222 file sbin/atactl/Makefile : 1.3 223 file sbin/cgdconfig/Makefile : 1.7 224 file sbin/clri/Makefile : 1.13 225 file sbin/dkctl/Makefile : 1.4 226 file sbin/dump/Makefile : 1.33 227 file sbin/fdisk/Makefile : 1.35 228 file sbin/fsck_ext2fs/Makefile : 1.11 229 file sbin/fsck_ffs/Makefile : 1.29 230 file sbin/fsdb/Makefile : 1.18 231 file sbin/mount_smbfs/Makefile : 1.4 232 file sbin/newfs/Makefile : 1.30 233 file sbin/newfs_sysvbfs/Makefile : 1.2 234 file sbin/restore/Makefile : 1.23 235 file sbin/veriexecctl/Makefile : 1.11 236 file sys/lib/libsa/Makefile : 1.59 237 file usr.bin/awk/Makefile : 1.9 238 file usr.bin/crontab/Makefile : 1.24 239 file usr.bin/ctags/Makefile : 1.8 240 file usr.bin/gzip/Makefile : 1.10 241 file usr.bin/ssh/sftp/Makefile : 1.10 242 file usr.bin/ssh/ssh/Makefile : 1.25 243 file usr.bin/vi/build/Makefile : 1.26 244 file usr.bin/telnet/Makefile : 1.40 245 file usr.bin/tn3270/tn3270/Makefile : 1.36 246 file usr.bin/tr/Makefile : 1.4 247 file usr.sbin/amd/amd/Makefile : 1.27 248 file usr.sbin/amd/amq/Makefile : 1.14 249 file usr.sbin/amd/libamu/Makefile : 1.20 250 file usr.sbin/amd/pawd/Makefile : 1.5 251 file usr.sbin/bind/Makefile.inc : 1.22 252 file usr.sbin/bind/libdns/Makefile : 1.3 253 file usr.sbin/bind/named/Makefile : 1.17 254 file usr.sbin/bootp/bootptest/Makefile : 1.2 255 file usr.sbin/chrtbl/Makefile : 1.6 256 file usr.sbin/cron/Makefile : 1.12 257 file usr.sbin/dhcp/Makefile.inc : 1.20 258 file usr.sbin/dumplfs/Makefile : 1.11 259 file usr.sbin/hprop/Makefile : 1.13 260 file usr.sbin/installboot/Makefile : 1.35 261 file usr.sbin/ipf/ipftest/Makefile : 1.32 262 file usr.sbin/isdn/isdnd/Makefile : 1.6 263 file usr.sbin/isdn/isdnmonitor/Makefile : 1.3 264 file usr.sbin/isdn/isdntel/Makefile : 1.2 265 file usr.sbin/isdn/isdntrace/Makefile : 126 266 file usr.sbin/mopd/common/Makefile : 1.10 267 file usr.sbin/mopd/mopd/Makefile : 1.9 268 file usr.sbin/mopd/mopprobe/Makefile : 1.7 269 file usr.sbin/makefs/Makefile : 1.17 270 file usr.sbin/mscdlabel/Makefile : 1.5 271 file usr.sbin/pkg_install/add/Makefile : 1.7 272 file usr.sbin/pkg_install/create/Makefile : 1.5 273 file usr.sbin/pkg_install/lib/Makefile : 1.28 274 file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11 275 file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5 276 file usr.sbin/pppd/Makefile.inc : 1.3 277 file usr.sbin/pppd/pppd/Makefile : 1.38 278 file usr.sbin/rarpd/Makefile : 1.10 279 file usr.sbin/rbootd/Makefile : 1.10 280 file usr.sbin/rpc.pcnfsd/Makefile : 1.17 281 file usr.sbin/rtadvd/Makefile : 1.9 282 file usr.sbin/tcpdump/Makefile : 1.42 283 file usr.sbin/wiconfig/Makefile : 1.3 284 file usr.sbin/ypserv/ypserv/Makefile : 1.16 285 descr 286 GCC 4.1 warns on pointer sign comparision/assignments and lots of 287 code does not conform. For now we use -Wno-pointer-sign and 288 -fno-strict-aliasing. 289 kcah 290 291 port vax 292 293 hack gcc 2.95/vax doesn't like abort being used as function pointer 294 cdate Tue Dec 13 05:54:50 GMT 2005 295 who jmc 296 file lib/libc/rpc/svc_vc.c 1.15 297 descr 298 Provide a local definition for abort which doesn't include 299 the noreturn attribute which trips up gcc 2.95 on vax. 300 301 hack gcc 2.95/vax doesn't have stdbool.h and gettext needs it 302 cdate Mon May 9 12:16:22 CDT 2005 303 who jmc 304 file gnu/usr.bin/gettext/Makefile.inc.prog 1.5 305 gnu/usr.bin/gettext/libgrep/Makefile 1.3 306 gnu/usr.bin/gettext/libnlspr/Makefile 1.5 307 gnu/usr.bin/gettext/libnlsut/Makefile 1.3 308 descr 309 The latest gettext assumes a C99 environment or at least 310 configure checks to work around this. As we don't use configure 311 provide a stdbool.h for vax builds locally in directories from 312 the template provided by the gettext code. 313 314 hack gcc 2.95/vax can't handle __used__ in mcount.c 315 cdate Fri May 6 14:30:53 CDT 2005 316 who jmc 317 file src/lib/libc/gmon/mcount.c 1.17 318 descr 319 Recent changes to mark this as __used__ to prevent optimization 320 away on sparc64 don't work on 2.95 vax. Ifdef'd back in the 321 old __unused__ if on vax. 322 323 hack gcc 2.95/vax cannot handle __builtin_ffs() 324 cdate Fri Aug 23 21:31:15 CEST 2002 325 who ragge 326 file sys/lib/libkern/libkern.h : 1.42 327 descr 328 __builtin_ffs() is ifdef'd away if __vax__. Matt Thomas has 329 added this feature to GCC 3 so it can be removed when switching. 330 331 332 hack gcc-vax-libbz2 333 mdate 27 Jun 2002 334 who thorpej 335 file lib/libbz2/Makefile 336 descr 337 libbz2 is mis-compiled with optimization with GCC 2.95.3 338 on VAX. -O0 works around this problem. 339 kcah 340 341 hack gawk 342 mdate 8 Nov 2003 343 who ragge 344 file gnu/usr.bin/gawk/Makefile 345 descr 346 gawk is mis-compiled with optimization with GCC 2.95.3 347 on VAX. -O0 works around this problem. 348 kcah 349 350 hack vax Toolchain bug 351 cdate 28 Mar 2003 352 who he 353 file sys/arch/vax/vax/intvec.S : 1.5 354 descr 355 Workaround for PR toolchain/20924. The assembler apparently 356 tries to range-check byte offsets when it doesn't have 357 sufficient information to make that decision. 358 Workaround uses `brw' instead of `brb' instruction. 359 kcah 360 361 hack vax gcc 2.95.3 -Wuninitialized workarounds 362 cdate 6 Nov 2003 363 who he 364 file sys/dev/bi/if_ni.c : 1.22 365 file sys/arch/vax/vax/ctu.c : 1.20 366 descr 367 Workaround for gcc 2.95.3 failing to detect that certain 368 variables will be initialized; so that this code compiles 369 with -Wuninitialized. Should be reviewed and possibly 370 reverted when gcc 3.3.2 is ready for vax. 371 kcah 372 373 hack vax gcc 2.95.3 structure initialization 374 cdat 13 May 2004 375 who cl 376 file sys/miscfs/kernfs/kernfs_vnops.c : 1.104 377 descr 378 Workaround for gcc 2.95.3 failing to initialize structures 379 and/or unions inside structures using nested designators. 380 Should be reverted when gcc >=3.3.3 is ready for vax. 381 kcah 382 383 hack vax gcc 2.95.3 needs -I. to build nslexer.c 384 cdat 6 Jun 2004 385 who mhitch 386 file lib/libc/arch/vax/Makefile.inc : 1.6 387 descr 388 It appears necessary to add -I. to CPPFLAGS when building 389 nslesxer.c. This may be caused by gcc 2.95.3 being used. 390 Should be reverted when a newer gcc is ready for vax. 391 kcah 392 393 hack vax gcc 2.95.3 doesn't understand "-std=c99" 394 cdat 5 April 2005 395 who tron 396 file src/share/mk/bsd.sys.mk 397 descr 398 We cannot use "-std=c99" for compiler warning level 4 and above 399 because gcc 2.95.3 doesn't support that option. 400 kcah 401 402 hack declare boolean_t in two IPF user-mode programs 403 cdate Tue Mar 7 19:19:20 CET 2006 404 who he 405 file dist/ipf/ipsend/iptests.c : 1.8 406 dist/ipf/ipsend/sock.c : 1.7 407 descr 408 The IPF user-mode programs ipsend and iptest first 409 include <sys/types.h> without _KERNEL defined, and 410 later include <sys/file.h> with _KERNEL defined. 411 This causes a build failure when building for vax, 412 since <sys/device.h> ends up being included without 413 bollean_t being defined by <sys/types.h>. 414 Build failure and further details documented in 415 PR#32907. 416 kcah 417 418 port sparc64 419 420 hack binutil-2.11-sparc64-pltrela 421 mdate 14 Aug 2001 422 who eeh 423 file libexec/ld.elf_so/arch/sparc64/mdreloc.c 424 descr 425 The first four PLT entries are reserved. There is some 426 disagreement whether they should have associated relocation 427 entries. Both the SPARC 32-bit and 64-bit ELF specifications 428 say that they should have relocation entries, but the 32-bit 429 SPARC binutils do not generate them, and now the 64-bit SPARC 430 binutils have stopped generating them too. 431 432 To provide binary compatibility, we will check the first entry, 433 if it is reserved it should not be of the type JMP_SLOT. If it 434 is JMP_SLOT, then the 4 reserved entries were not generated and 435 our index is 4 entries too far, so we frob the rela pointer. 436 kcah 437 438 439 port arm 440 441 hack gcc-unsigned-compare 442 cdate 09 Mar 2002 443 mdate 18 Mar 2002 444 who bjh21 445 file dist/bind/lib/nameser/ns_parse.c : 1.3 446 file dist/dhcp/minires/ns_parse.c : 1.3 447 file dist/dhcp/omapip/result.c : 1.2 448 file dist/dhcp/server/failover.c : 1.3 449 file gnu/dist/gawk/eval.c : 1.4 450 file gnu/dist/toolchain/bfd/bfd.c : 1.2 451 file gnu/dist/toolchain/bfd/format.c : 1.2 452 file gnu/dist/toolchain/gdb/target.c : 1.2 453 file sys/kern/vfs_subr.c : 1.172 454 descr When checking that a potentially-unsigned enum is >= 0, assign 455 it to an int first. This is necessary to avoid "comparison is 456 always true" warnings with -fshort-enums. Casting to an int 457 really should be enough, but turns out not to be. 458 kcah 459 460 hack gcc 3.3.2/arm sys/kern/uipc_socket.c 461 cdate Tue Oct 28 18:02:16 GMT 2003 462 who skrll 463 pr 23044 464 file sys/arch/arm/conf/Makefile.arm : 1.19 465 descr 466 Performing a build.sh tools on a CATS with NFS mounted 467 obj and src directories results in "panic: receive 1" 468 The hack is to compile sys/kern/uipc_socket.c with 469 -fno-strict-aliasing 470 kcah 471 472 473 port pc532 474 475 hack egcs-pc532-ip6_mroute 476 cdate 09 Jul 2002 477 who simonb 478 file sys/arch/pc532/conf/Makefile.pc532 : 1.70 479 file sys/arch/pc532/conf/files.pc532 : 1.47 480 descr 481 egcs 1.1.2 gets an "internal error--insn does not satisfy its 482 constraints" error compiling ip6_mroute.c with -O2 or greater. 483 -O1 works around this problem. 484 kcah 485 486 hack gcc-pc532-duffs_device 487 cdate Mon Oct 27 07:23:05 UTC 2003 488 who simonb 489 file sys/arch/pc532/conf/Makefile.pc532 : 1.71 490 file sys/arch/pc532/conf/files.pc532 : 1.52 491 pr GCC PR optimization/5230 492 descr 493 gcc incorrectly gives an "unreachable code at beginning of 494 switch statement" for a Duff's device construct in 495 arch/pc532/dev/ncr.c. There is no way to disable just this 496 warning, so -Wno-error is turned on for this file. 497 kcah 498 499 hack gcc332-cppmacro-ice 500 cdate Sun Dec 7 12:48:33 UTC 2003 501 who simonb 502 file gnu/usr.bin/gcc3/libcpp/Makefile : 1.2 503 descr 504 gcc 3.3.2 gets an ICE when compiling cppmacro.c with -O2. 505 The hack is to use -O1 for this file. Fixed in gcc 506 -current mainline, unable to work out where the fix is 507 right now. 508 kcah 509 510 511 port sh3 512 513 hack gcc-sh3-sed 514 mdate 23 Apr 2002 515 who thorpej 516 file usr.bin/sed/Makefile : 1.9 : 9 : 13 517 descr 518 The in-tree GCC 2.95.3-based compiler ICEs when building 519 with optimization for SuperH. Hack is to build with -O0. 520 kcah 521 522 523 port sh5 524 525 hack SuperH SH5 Toolchain Bugs 526 cdate 11 Jul 2002 527 who scw 528 file usr.sbin/ndbootd/ndbootd.c : 1.6 529 file usr.sbin/traceroute/traceroute.c : 1.48 530 descr 531 The SuperH SH5 toolchain (2.97-sh5-010522) gets an internal 532 compiler error when assigning a bit-wise inverted value 533 under some circumstances. 534 Work around it by splitting the statement into two. 535 kcah 536 537 hack SuperH SH5 Toolchain Bugs 538 cdate 17 May 2003 539 who scw 540 file lib/libpthread/pthread_lock.c : 1.7 541 descr 542 The SuperH SH5 toolchain generates incorrect PIC code when 543 faced with a symbol which is declared extern, but has local 544 scope due to being defined within an asm() statement (without 545 being declared .globl in that statement). Work around it by 546 adding the .globl. 547 kcah 548 549 hack gcc 3.3.2 on sh5 - ICE compiling reload1.c at -O2 550 cdate Sun Dec 7 19:44:05 GMT 2003 551 who scw 552 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 553 descr 554 Gcc3 for sh5 gets an ICE compiling reload1.c at -O2. 555 Drop to -O1 for now when building for sh5. 556 kcah 557 558 hack gcc 3.3.2 on sh5 - ICE compiling elf32.c/elf64.c at -O2 559 cdate Sun Dec 7 21:10:46 GMT 2003 560 who scw 561 file gnu/lib/libbfd/Makefile : 1.39 562 descr 563 Gcc3 for sh5 gets an ICE compiling libbfd's elf32.c 564 and elf64.c at -O2. 565 Drop to -O1 for now when building for sh5. 566 kcah 567 568 569 hack gcc 3.3.2 on sh5 - fatal warning compiling function.c 570 cdate Sun Dec 7 19:44:05 GMT 2003 571 who scw 572 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 573 descr 574 Gcc3 for sh5 issues a warning: 575 .../gnu/dist/gcc/gcc/function.c:4742: warning: `and' of 576 mutually exclusive equal-tests is always 0. 577 This causes the build to fail because of -Werror. 578 Work-around by defining NOGCCERROR when building for sh5. 579 kcah 580 581 hack gcc 3.3.3 on sh5 - ICE compiling rbtdb.c and rbtdb64.c 582 cdate Thu Nov 11 00:35:33 UTC 2004 583 who he 584 file usr.sbin/bind/libdns/Makefile/1.2 585 descr 586 Gcc3 for sh5 gets an ICE compiling these files at -O2. 587 Drop to -O1 for now when building for sh5. 588 kcah 589 590 hack gcc 3.3.3 nb3 on sh5 - ICE compiling bsd-comp.c 591 cdate Thu May 25 23:05:20 UTC 2005 592 who he 593 file sys/lkm/net/bsdcomp/Makefile : 1.3 594 descr 595 Gcc3 for sh5 gets an ICE compiling this at -O2, 596 "could not split insn". Drop to -O1 for sh5. 597 kcah 598 599 hack gcc 3.3.3 nb3 on sh5 - ICE compiling strtod.c 600 cdate Tue Jan 31 10:51:52 GMT 2006 601 who scw 602 file lib/libc/gdtoa/Makefile.inc : 1.2 603 descr 604 Gcc3 for sh5 gets an ICE compiling this at -O2, 605 "could not split insn". Drop to -O1 for sh5. 606 kcah 607 608 port sun2 609 610 hack gcc 3.3.2/mdsetimage 611 cdate Tue Oct 28 18:43:05 EST 2003 612 who fredette 613 file gnu/usr.sbin/mdsetimage/Makefile : 1.15 614 descr 615 mdsetimage.c causes cc1 to barf for as-yet unknown reasons. 616 this hack uses -O0 to avoid the problem. 617 kcah 618 619 hack gcc 3.3.2/installboot/ffs.c 620 cdate Tue Oct 28 18:43:05 EST 2003 621 who fredette 622 file usr.sbin/installboot/Makefile : 1.26 623 descr 624 ffs.c causes cc1 to barf for as-yet unknown reasons. this 625 hack uses -O0 to avoid the problem. 626 kcah 627 628 629 port m68000 630 631 hack gcc 3.3.2/gcc/ra-colorize.c 632 cdate Wed Nov 5 11:03:13 EST 2003 633 who mrg 634 file gnu/usr.bin/gcc3/backend/Makefile : 1.11 635 descr 636 ra-colorize.c causes a whole spew of unreferenced .L* local 637 symbols. using -O0 (or even -O2 reportedly) avoids the problem. 638 Note this has been fixed in 3.3.3 at least on m68k, 639 but it hasn't been confirmed on sun2/m68000. 640 (it's too slow even on emulator and unlikely to build 641 toolchains on sun2 with its maximum 4MB RAM) 642 kcah 643 644 port sparc64 645 646 hack disable optimzations for uvm_bio.c on 32 bit kernels 647 cdate Sun Mar 21 14:14:04 MET 2004 648 who martin 649 file sys/arch/sparc64/conf/Makefile.sparc64 : 1.53-1.54 650 file sys/arch/sparc64/conf/files.sparc64 : 1.93 651 descr 652 The sparc compiler miscompiles uvm_bio.c when using 653 any optimization. This results in ubc_release panics. 654 kcah 655 656 port macppc 657 658 hack remove inline from rotate_{left,right} 659 cdate Tue Feb 22 13:43:25 EST 2005 660 who christos 661 file src/dist/bind/lib/dns/rbt.c 662 descr 663 The macppc gcc-3.3 compiler miscompiles rbt.c when these 664 functions are inlined. The error is: 665 .* named[368]: rbt.c:1584: INSIST(child != (void *)0) >failed 666 .* named[368]: exiting (due to assertion failure) 667 This is reportedly fixed in gcc-3.4 668 kcah 669 670 port hppa 671 672 hack hppa-gcc-3.3.3/grep/dfa.c 673 cdate Sun Aug 8 08:34:32 PDT 2004 674 who chs 675 file gnu/usr.bin/grep/grep/Makefile : 1.4 676 descr 677 gcc 3.3.3 generates bad code for dfa.c with -O2, 678 reduce optimization to -O1 to avoid the bug. 679 kcah 680 681 hack hppa-gcc-3.3.3 / make/buf.c 682 cdate Mon May 8 13:02:36 CEST 2006 683 who he 684 file usr.bin/make/Makefile : 1.34 685 descr 686 gcc 3.3.3 nb3 gets an "unrecognized insn" internal 687 compiler error when building this file with -O2, 688 reduce optimization to -O1 to avoid the bug. 689 kcah 690 691 hack hppa boot-from-disk memory corruption 692 cdate Wed May 18 06:56:07 PDT 2005 693 who chs 694 file src/sys/dev/scsipi/scsipiconf.h : 1.98 695 descr 696 There is some bug with DMA on hppa that corrupts scsipi_xfer 697 structures, but it only shows up when booting from disk. 698 For now, we'll add some padding to scsipi_xfer so that 699 the corrupted memory is not otherwise used. 700 kcah 701 702 port mips 703 704 hack mips-shared-linker-load-address 705 cdate Fri Oct 7 08:33:10 UTC 2005 706 who simonb 707 file src/sys/kern/exec_elf32.c : 1.107 708 descr 709 With COMPAT_16 or previous enabled (which enables 710 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 711 load and run at address 0. The check to fix this in 712 rev 1.107 only checks the first psection of the ELF 713 executable, which may not be loadable. A more correct 714 fix is to check the first loadable psection instead of 715 just the first psection. 716 kcah 717 718
Indexes created Wed Nov 05 21:10:10 GMT 2025