HACKS revision 1.68
1 # $NetBSD: HACKS,v 1.68 2006/05/18 18:48:42 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 distrib/utils/sysinst/aout2elf.c : 1.12 143 file gnu/libexec/uucp/uucico/uucico.c : 1.6 144 file lib/libc/citrus/citrus_csmapper.c : 1.6 145 file lib/libc/citrus/citrus_pivot_factory.c : 1.5 146 file lib/libc/inet/inet_cidr_ntop.c : 1.3 147 file lib/libc/inet/inet_ntop.c : 1.3 148 file lib/libc/stdio/vfwprintf.c : 1.8 149 file libexec/ld.elf_so/arch/sparc64/mdreloc.c : 1.39 150 file sbin/fsck_ext2fs/dir.c : 1.19 151 file sbin/routed/rtquery/rtquery.c : 1.18 152 file sys/crypto/cast128/cast128.c : 1.9 153 file sys/ddb/db_command.c : 1.86 154 file sys/dev/cardbus/cardbus_map.c : 1.21 155 file sys/dev/fss.c : 1.25 156 file sys/dev/ic/mb86950.c : 1.5 157 file sys/dev/ic/midway.c : 1.71 158 file sys/dev/kttcp.c : 1.18 159 file sys/dev/rasops/rasops_bitops.h : 1.9 160 file sys/dev/pci/cmpci.c : 1.31 161 file sys/dev/pci/machfb.c : 1.45 162 file sys/dev/usb/ohci.c : 1.174 163 file sys/dev/usb/uhci.c : 1.196 164 file sys/dev/rasops/rasops_bitops.h : 1.9 165 file sys/dist/ipf/netinet/ip_nat.c : 1.10 166 file sys/dist/ipf/netinet/ip_rpcb_pxy.c : 1.8 167 file sys/dist/pf/net/pf.c : 1.22 168 file sys/fs/udf/udf_vnops.c : 1.4 169 file sys/kern/kern_sig.c : 1.219 170 file sys/kern/tty.c : 1.181 171 file sys/net/bpf.c : 1.116 172 file sys/net/zlib.c : 1.26 173 file sys/netccitt/if_x25subr.c : 1.37 174 file sys/netinet/in.c : 1.107 175 file sys/netsmb/smb_smb.c : 1.27 176 file sys/netsmb/smb_trantcp.c : 1.22 177 file sys/nfs/nfs_serv.c : 1.108 178 file sys/nfs/nfs_socket.c : 1.129 179 file sys/nfs/nfs_syscalls.c : 1.91 180 file sys/ufs/lfs/lfs_vfsops.c : 1.207 [also (char *)] 181 file usr.bin/ftp/ftp.c : 1.140 182 file usr.bin/find/function.c : 1.54 183 file usr.bin/mail/tty.c : 1.20 184 file usr.bin/nl/nl.c : 1.7 185 file usr.bin/systat/keyboard.c : 1.23 186 file usr.bin/usbhidctl/usbhid.c : 1.29 187 file usr.bin/vi/cl/cl_read.c : 1.5 188 file usr.bin/vi/ex/ex_cscope.c : 1.12 189 file usr.bin/vi/ex/ex_tag.c : 1.19 190 file usr.bin/vi/vi/v_txt.c : 1.15 191 file usr.sbin/altq/altqstat/qdisc_rio.c : 1.4 192 file usr.sbin/cron/do_command.c : 1.19 193 file usr.sbin/timed/timed/slave.c : 1.15 194 descr 195 GCC 4.1 gets many uninitialised variable warnings wrong. We should 196 really audit all the old hacks like this when older compilers are 197 removed from the tree, as many are probably no longer required. 198 The problem is that it does not recognize initialization via function 199 call pointer. I.e. 200 int p; 201 foo(&p); 202 does not mark p as initialized. 203 kcah 204 205 hack gcc4 pointer sign and strict aliasing problems 206 mdate 10 May 2006 207 who mrg 208 file bin/ed/Makefile : 1.33 209 file bin/systrace/Makefile : 1.12 210 file distrib/utils/sysinst/Makefile.inc : 1.44 211 file games/bcd/Makefile : 1.5 212 file games/dab/Makefile : 1.5 213 file games/larn/Makefile : 1.17 214 file games/pom/Makefile : 1.5 215 file lib/libasn1/Makefile : 1.26 216 file lib/libcrypt/Makefile : 1.17 217 file lib/libgssapi/Makefile : 1.16 218 file lib/libhdb/Makefile : 1.20 219 file lib/libkadm5clnt/Makefile : 1.21 220 file lib/libkadm5srv/Makefile : 1.25 221 file lib/libkrb5/Makefile : 1.35 222 file lib/libssh/Makefile : 1.6 223 file lib/libtelnet/Makefile : 1.26 224 file libexec/getty/Makefile : 1.14 225 file libexec/kadmind/Makefile : 1.19 226 file libexec/kpasswdd/Makefile : 1.14 227 file sbin/atactl/Makefile : 1.3 228 file sbin/cgdconfig/Makefile : 1.7 229 file sbin/clri/Makefile : 1.13 230 file sbin/dkctl/Makefile : 1.4 231 file sbin/dump/Makefile : 1.33 232 file sbin/fdisk/Makefile : 1.35 233 file sbin/fsck_ext2fs/Makefile : 1.11 234 file sbin/fsck_ffs/Makefile : 1.29 235 file sbin/fsdb/Makefile : 1.18 236 file sbin/mount_smbfs/Makefile : 1.4 237 file sbin/newfs/Makefile : 1.30 238 file sbin/newfs_sysvbfs/Makefile : 1.2 239 file sbin/restore/Makefile : 1.23 240 file sbin/veriexecctl/Makefile : 1.11 241 file sys/lib/libsa/Makefile : 1.59 242 file sys/arch/evbarm/adi_brh/brh_machdep.c : 1.24 243 file usr.bin/awk/Makefile : 1.9 244 file usr.bin/crontab/Makefile : 1.24 245 file usr.bin/ctags/Makefile : 1.8 246 file usr.bin/gzip/Makefile : 1.10 247 file usr.bin/ssh/sftp/Makefile : 1.10 248 file usr.bin/ssh/ssh/Makefile : 1.25 249 file usr.bin/vi/build/Makefile : 1.26 250 file usr.bin/telnet/Makefile : 1.40 251 file usr.bin/tn3270/tn3270/Makefile : 1.36 252 file usr.bin/tr/Makefile : 1.4 253 file usr.sbin/amd/amd/Makefile : 1.27 254 file usr.sbin/amd/amq/Makefile : 1.14 255 file usr.sbin/amd/libamu/Makefile : 1.20 256 file usr.sbin/amd/pawd/Makefile : 1.5 257 file usr.sbin/bind/Makefile.inc : 1.22 258 file usr.sbin/bind/libdns/Makefile : 1.3 259 file usr.sbin/bind/named/Makefile : 1.17 260 file usr.sbin/bootp/bootptest/Makefile : 1.2 261 file usr.sbin/chrtbl/Makefile : 1.6 262 file usr.sbin/cron/Makefile : 1.12 263 file usr.sbin/dhcp/Makefile.inc : 1.20 264 file usr.sbin/dumplfs/Makefile : 1.11 265 file usr.sbin/hprop/Makefile : 1.13 266 file usr.sbin/installboot/Makefile : 1.35 267 file usr.sbin/ipf/ipftest/Makefile : 1.32 268 file usr.sbin/isdn/isdnd/Makefile : 1.6 269 file usr.sbin/isdn/isdnmonitor/Makefile : 1.3 270 file usr.sbin/isdn/isdntel/Makefile : 1.2 271 file usr.sbin/isdn/isdntrace/Makefile : 126 272 file usr.sbin/mopd/common/Makefile : 1.10 273 file usr.sbin/mopd/mopd/Makefile : 1.9 274 file usr.sbin/mopd/mopprobe/Makefile : 1.7 275 file usr.sbin/makefs/Makefile : 1.17 276 file usr.sbin/mscdlabel/Makefile : 1.5 277 file usr.sbin/pkg_install/add/Makefile : 1.7 278 file usr.sbin/pkg_install/create/Makefile : 1.5 279 file usr.sbin/pkg_install/lib/Makefile : 1.28 280 file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11 281 file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5 282 file usr.sbin/pppd/Makefile.inc : 1.3 283 file usr.sbin/pppd/pppd/Makefile : 1.38 284 file usr.sbin/rarpd/Makefile : 1.10 285 file usr.sbin/rbootd/Makefile : 1.10 286 file usr.sbin/rpc.pcnfsd/Makefile : 1.17 287 file usr.sbin/rtadvd/Makefile : 1.9 288 file usr.sbin/tcpdump/Makefile : 1.42 289 file usr.sbin/wiconfig/Makefile : 1.3 290 file usr.sbin/ypserv/ypserv/Makefile : 1.16 291 descr 292 GCC 4.1 warns on pointer sign comparision/assignments and lots of 293 code does not conform. For now we use -Wno-pointer-sign and 294 -fno-strict-aliasing. 295 kcah 296 297 port vax 298 299 hack gcc 2.95/vax doesn't like abort being used as function pointer 300 cdate Tue Dec 13 05:54:50 GMT 2005 301 who jmc 302 file lib/libc/rpc/svc_vc.c 1.15 303 descr 304 Provide a local definition for abort which doesn't include 305 the noreturn attribute which trips up gcc 2.95 on vax. 306 307 hack gcc 2.95/vax doesn't have stdbool.h and gettext needs it 308 cdate Mon May 9 12:16:22 CDT 2005 309 who jmc 310 file gnu/usr.bin/gettext/Makefile.inc.prog 1.5 311 gnu/usr.bin/gettext/libgrep/Makefile 1.3 312 gnu/usr.bin/gettext/libnlspr/Makefile 1.5 313 gnu/usr.bin/gettext/libnlsut/Makefile 1.3 314 descr 315 The latest gettext assumes a C99 environment or at least 316 configure checks to work around this. As we don't use configure 317 provide a stdbool.h for vax builds locally in directories from 318 the template provided by the gettext code. 319 320 hack gcc 2.95/vax can't handle __used__ in mcount.c 321 cdate Fri May 6 14:30:53 CDT 2005 322 who jmc 323 file src/lib/libc/gmon/mcount.c 1.17 324 descr 325 Recent changes to mark this as __used__ to prevent optimization 326 away on sparc64 don't work on 2.95 vax. Ifdef'd back in the 327 old __unused__ if on vax. 328 329 hack gcc 2.95/vax cannot handle __builtin_ffs() 330 cdate Fri Aug 23 21:31:15 CEST 2002 331 who ragge 332 file sys/lib/libkern/libkern.h : 1.42 333 descr 334 __builtin_ffs() is ifdef'd away if __vax__. Matt Thomas has 335 added this feature to GCC 3 so it can be removed when switching. 336 337 338 hack gcc-vax-libbz2 339 mdate 27 Jun 2002 340 who thorpej 341 file lib/libbz2/Makefile 342 descr 343 libbz2 is mis-compiled with optimization with GCC 2.95.3 344 on VAX. -O0 works around this problem. 345 kcah 346 347 hack gawk 348 mdate 8 Nov 2003 349 who ragge 350 file gnu/usr.bin/gawk/Makefile 351 descr 352 gawk is mis-compiled with optimization with GCC 2.95.3 353 on VAX. -O0 works around this problem. 354 kcah 355 356 hack vax Toolchain bug 357 cdate 28 Mar 2003 358 who he 359 file sys/arch/vax/vax/intvec.S : 1.5 360 descr 361 Workaround for PR toolchain/20924. The assembler apparently 362 tries to range-check byte offsets when it doesn't have 363 sufficient information to make that decision. 364 Workaround uses `brw' instead of `brb' instruction. 365 kcah 366 367 hack vax gcc 2.95.3 -Wuninitialized workarounds 368 cdate 6 Nov 2003 369 who he 370 file sys/dev/bi/if_ni.c : 1.22 371 file sys/arch/vax/vax/ctu.c : 1.20 372 descr 373 Workaround for gcc 2.95.3 failing to detect that certain 374 variables will be initialized; so that this code compiles 375 with -Wuninitialized. Should be reviewed and possibly 376 reverted when gcc 3.3.2 is ready for vax. 377 kcah 378 379 hack vax gcc 2.95.3 structure initialization 380 cdat 13 May 2004 381 who cl 382 file sys/miscfs/kernfs/kernfs_vnops.c : 1.104 383 descr 384 Workaround for gcc 2.95.3 failing to initialize structures 385 and/or unions inside structures using nested designators. 386 Should be reverted when gcc >=3.3.3 is ready for vax. 387 kcah 388 389 hack vax gcc 2.95.3 needs -I. to build nslexer.c 390 cdat 6 Jun 2004 391 who mhitch 392 file lib/libc/arch/vax/Makefile.inc : 1.6 393 descr 394 It appears necessary to add -I. to CPPFLAGS when building 395 nslesxer.c. This may be caused by gcc 2.95.3 being used. 396 Should be reverted when a newer gcc is ready for vax. 397 kcah 398 399 hack vax gcc 2.95.3 doesn't understand "-std=c99" 400 cdat 5 April 2005 401 who tron 402 file src/share/mk/bsd.sys.mk 403 descr 404 We cannot use "-std=c99" for compiler warning level 4 and above 405 because gcc 2.95.3 doesn't support that option. 406 kcah 407 408 hack declare boolean_t in two IPF user-mode programs 409 cdate Tue Mar 7 19:19:20 CET 2006 410 who he 411 file dist/ipf/ipsend/iptests.c : 1.8 412 dist/ipf/ipsend/sock.c : 1.7 413 descr 414 The IPF user-mode programs ipsend and iptest first 415 include <sys/types.h> without _KERNEL defined, and 416 later include <sys/file.h> with _KERNEL defined. 417 This causes a build failure when building for vax, 418 since <sys/device.h> ends up being included without 419 bollean_t being defined by <sys/types.h>. 420 Build failure and further details documented in 421 PR#32907. 422 kcah 423 424 port sparc64 425 426 hack binutil-2.11-sparc64-pltrela 427 mdate 14 Aug 2001 428 who eeh 429 file libexec/ld.elf_so/arch/sparc64/mdreloc.c 430 descr 431 The first four PLT entries are reserved. There is some 432 disagreement whether they should have associated relocation 433 entries. Both the SPARC 32-bit and 64-bit ELF specifications 434 say that they should have relocation entries, but the 32-bit 435 SPARC binutils do not generate them, and now the 64-bit SPARC 436 binutils have stopped generating them too. 437 438 To provide binary compatibility, we will check the first entry, 439 if it is reserved it should not be of the type JMP_SLOT. If it 440 is JMP_SLOT, then the 4 reserved entries were not generated and 441 our index is 4 entries too far, so we frob the rela pointer. 442 kcah 443 444 445 port arm 446 447 hack gcc-unsigned-compare 448 cdate 09 Mar 2002 449 mdate 18 Mar 2002 450 who bjh21 451 file dist/bind/lib/nameser/ns_parse.c : 1.3 452 file dist/dhcp/minires/ns_parse.c : 1.3 453 file dist/dhcp/omapip/result.c : 1.2 454 file dist/dhcp/server/failover.c : 1.3 455 file gnu/dist/gawk/eval.c : 1.4 456 file gnu/dist/toolchain/bfd/bfd.c : 1.2 457 file gnu/dist/toolchain/bfd/format.c : 1.2 458 file gnu/dist/toolchain/gdb/target.c : 1.2 459 file sys/kern/vfs_subr.c : 1.172 460 descr When checking that a potentially-unsigned enum is >= 0, assign 461 it to an int first. This is necessary to avoid "comparison is 462 always true" warnings with -fshort-enums. Casting to an int 463 really should be enough, but turns out not to be. 464 kcah 465 466 hack gcc 3.3.2/arm sys/kern/uipc_socket.c 467 cdate Tue Oct 28 18:02:16 GMT 2003 468 who skrll 469 pr 23044 470 file sys/arch/arm/conf/Makefile.arm : 1.19 471 descr 472 Performing a build.sh tools on a CATS with NFS mounted 473 obj and src directories results in "panic: receive 1" 474 The hack is to compile sys/kern/uipc_socket.c with 475 -fno-strict-aliasing 476 kcah 477 478 479 port pc532 480 481 hack egcs-pc532-ip6_mroute 482 cdate 09 Jul 2002 483 who simonb 484 file sys/arch/pc532/conf/Makefile.pc532 : 1.70 485 file sys/arch/pc532/conf/files.pc532 : 1.47 486 descr 487 egcs 1.1.2 gets an "internal error--insn does not satisfy its 488 constraints" error compiling ip6_mroute.c with -O2 or greater. 489 -O1 works around this problem. 490 kcah 491 492 hack gcc-pc532-duffs_device 493 cdate Mon Oct 27 07:23:05 UTC 2003 494 who simonb 495 file sys/arch/pc532/conf/Makefile.pc532 : 1.71 496 file sys/arch/pc532/conf/files.pc532 : 1.52 497 pr GCC PR optimization/5230 498 descr 499 gcc incorrectly gives an "unreachable code at beginning of 500 switch statement" for a Duff's device construct in 501 arch/pc532/dev/ncr.c. There is no way to disable just this 502 warning, so -Wno-error is turned on for this file. 503 kcah 504 505 hack gcc332-cppmacro-ice 506 cdate Sun Dec 7 12:48:33 UTC 2003 507 who simonb 508 file gnu/usr.bin/gcc3/libcpp/Makefile : 1.2 509 descr 510 gcc 3.3.2 gets an ICE when compiling cppmacro.c with -O2. 511 The hack is to use -O1 for this file. Fixed in gcc 512 -current mainline, unable to work out where the fix is 513 right now. 514 kcah 515 516 517 port sh3 518 519 hack gcc-sh3-sed 520 mdate 23 Apr 2002 521 who thorpej 522 file usr.bin/sed/Makefile : 1.9 : 9 : 13 523 descr 524 The in-tree GCC 2.95.3-based compiler ICEs when building 525 with optimization for SuperH. Hack is to build with -O0. 526 kcah 527 528 529 port sh5 530 531 hack SuperH SH5 Toolchain Bugs 532 cdate 11 Jul 2002 533 who scw 534 file usr.sbin/ndbootd/ndbootd.c : 1.6 535 file usr.sbin/traceroute/traceroute.c : 1.48 536 descr 537 The SuperH SH5 toolchain (2.97-sh5-010522) gets an internal 538 compiler error when assigning a bit-wise inverted value 539 under some circumstances. 540 Work around it by splitting the statement into two. 541 kcah 542 543 hack SuperH SH5 Toolchain Bugs 544 cdate 17 May 2003 545 who scw 546 file lib/libpthread/pthread_lock.c : 1.7 547 descr 548 The SuperH SH5 toolchain generates incorrect PIC code when 549 faced with a symbol which is declared extern, but has local 550 scope due to being defined within an asm() statement (without 551 being declared .globl in that statement). Work around it by 552 adding the .globl. 553 kcah 554 555 hack gcc 3.3.2 on sh5 - ICE compiling reload1.c at -O2 556 cdate Sun Dec 7 19:44:05 GMT 2003 557 who scw 558 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 559 descr 560 Gcc3 for sh5 gets an ICE compiling reload1.c at -O2. 561 Drop to -O1 for now when building for sh5. 562 kcah 563 564 hack gcc 3.3.2 on sh5 - ICE compiling elf32.c/elf64.c at -O2 565 cdate Sun Dec 7 21:10:46 GMT 2003 566 who scw 567 file gnu/lib/libbfd/Makefile : 1.39 568 descr 569 Gcc3 for sh5 gets an ICE compiling libbfd's elf32.c 570 and elf64.c at -O2. 571 Drop to -O1 for now when building for sh5. 572 kcah 573 574 575 hack gcc 3.3.2 on sh5 - fatal warning compiling function.c 576 cdate Sun Dec 7 19:44:05 GMT 2003 577 who scw 578 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 579 descr 580 Gcc3 for sh5 issues a warning: 581 .../gnu/dist/gcc/gcc/function.c:4742: warning: `and' of 582 mutually exclusive equal-tests is always 0. 583 This causes the build to fail because of -Werror. 584 Work-around by defining NOGCCERROR when building for sh5. 585 kcah 586 587 hack gcc 3.3.3 on sh5 - ICE compiling rbtdb.c and rbtdb64.c 588 cdate Thu Nov 11 00:35:33 UTC 2004 589 who he 590 file usr.sbin/bind/libdns/Makefile/1.2 591 descr 592 Gcc3 for sh5 gets an ICE compiling these files at -O2. 593 Drop to -O1 for now when building for sh5. 594 kcah 595 596 hack gcc 3.3.3 nb3 on sh5 - ICE compiling bsd-comp.c 597 cdate Thu May 25 23:05:20 UTC 2005 598 who he 599 file sys/lkm/net/bsdcomp/Makefile : 1.3 600 descr 601 Gcc3 for sh5 gets an ICE compiling this at -O2, 602 "could not split insn". Drop to -O1 for sh5. 603 kcah 604 605 hack gcc 3.3.3 nb3 on sh5 - ICE compiling strtod.c 606 cdate Tue Jan 31 10:51:52 GMT 2006 607 who scw 608 file lib/libc/gdtoa/Makefile.inc : 1.2 609 descr 610 Gcc3 for sh5 gets an ICE compiling this at -O2, 611 "could not split insn". Drop to -O1 for sh5. 612 kcah 613 614 port sun2 615 616 hack gcc 3.3.2/mdsetimage 617 cdate Tue Oct 28 18:43:05 EST 2003 618 who fredette 619 file gnu/usr.sbin/mdsetimage/Makefile : 1.15 620 descr 621 mdsetimage.c causes cc1 to barf for as-yet unknown reasons. 622 this hack uses -O0 to avoid the problem. 623 kcah 624 625 hack gcc 3.3.2/installboot/ffs.c 626 cdate Tue Oct 28 18:43:05 EST 2003 627 who fredette 628 file usr.sbin/installboot/Makefile : 1.26 629 descr 630 ffs.c causes cc1 to barf for as-yet unknown reasons. this 631 hack uses -O0 to avoid the problem. 632 kcah 633 634 635 port m68000 636 637 hack gcc 3.3.2/gcc/ra-colorize.c 638 cdate Wed Nov 5 11:03:13 EST 2003 639 who mrg 640 file gnu/usr.bin/gcc3/backend/Makefile : 1.11 641 descr 642 ra-colorize.c causes a whole spew of unreferenced .L* local 643 symbols. using -O0 (or even -O2 reportedly) avoids the problem. 644 Note this has been fixed in 3.3.3 at least on m68k, 645 but it hasn't been confirmed on sun2/m68000. 646 (it's too slow even on emulator and unlikely to build 647 toolchains on sun2 with its maximum 4MB RAM) 648 kcah 649 650 port sparc64 651 652 hack disable optimzations for uvm_bio.c on 32 bit kernels 653 cdate Sun Mar 21 14:14:04 MET 2004 654 who martin 655 file sys/arch/sparc64/conf/Makefile.sparc64 : 1.53-1.54 656 file sys/arch/sparc64/conf/files.sparc64 : 1.93 657 descr 658 The sparc compiler miscompiles uvm_bio.c when using 659 any optimization. This results in ubc_release panics. 660 kcah 661 662 port macppc 663 664 hack remove inline from rotate_{left,right} 665 cdate Tue Feb 22 13:43:25 EST 2005 666 who christos 667 file src/dist/bind/lib/dns/rbt.c 668 descr 669 The macppc gcc-3.3 compiler miscompiles rbt.c when these 670 functions are inlined. The error is: 671 .* named[368]: rbt.c:1584: INSIST(child != (void *)0) >failed 672 .* named[368]: exiting (due to assertion failure) 673 This is reportedly fixed in gcc-3.4 674 kcah 675 676 port hppa 677 678 hack hppa-gcc-3.3.3/grep/dfa.c 679 cdate Sun Aug 8 08:34:32 PDT 2004 680 who chs 681 file gnu/usr.bin/grep/grep/Makefile : 1.4 682 descr 683 gcc 3.3.3 generates bad code for dfa.c with -O2, 684 reduce optimization to -O1 to avoid the bug. 685 kcah 686 687 hack hppa-gcc-3.3.3 / make/buf.c 688 cdate Mon May 8 13:02:36 CEST 2006 689 who he 690 file usr.bin/make/Makefile : 1.34 691 descr 692 gcc 3.3.3 nb3 gets an "unrecognized insn" internal 693 compiler error when building this file with -O2, 694 reduce optimization to -O1 to avoid the bug. 695 kcah 696 697 hack hppa boot-from-disk memory corruption 698 cdate Wed May 18 06:56:07 PDT 2005 699 who chs 700 file src/sys/dev/scsipi/scsipiconf.h : 1.98 701 descr 702 There is some bug with DMA on hppa that corrupts scsipi_xfer 703 structures, but it only shows up when booting from disk. 704 For now, we'll add some padding to scsipi_xfer so that 705 the corrupted memory is not otherwise used. 706 kcah 707 708 port mips 709 710 hack mips-shared-linker-load-address 711 cdate Fri Oct 7 08:33:10 UTC 2005 712 who simonb 713 file src/sys/kern/exec_elf32.c : 1.107 714 descr 715 With COMPAT_16 or previous enabled (which enables 716 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 717 load and run at address 0. The check to fix this in 718 rev 1.107 only checks the first psection of the ELF 719 executable, which may not be loadable. A more correct 720 fix is to check the first loadable psection instead of 721 just the first psection. 722 kcah 723 724
Indexes created Wed Nov 05 19:10:08 GMT 2025