HACKS revision 1.72
1 # $NetBSD: HACKS,v 1.72 2006/05/21 00:44:53 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/ntp_request.c : 1.4 138 file dist/ntp/ntpd/refclock_shm.c : 1.4 139 file dist/ntp/sntp/timing.c : 1.3 140 file dist/pppd/pppstats/pppstats.c : 1.3 141 file dist/smbfs/lib/smb/rap.c : 1.6 142 file dist/tcpdump/print-zephyr.c : 1.5 143 file distrib/utils/sysinst/aout2elf.c : 1.12 144 file gnu/libexec/uucp/uucico/uucico.c : 1.6 145 file lib/libc/citrus/citrus_csmapper.c : 1.6 146 file lib/libc/citrus/citrus_pivot_factory.c : 1.5 147 file lib/libc/inet/inet_cidr_ntop.c : 1.3 148 file lib/libc/inet/inet_ntop.c : 1.3 149 file lib/libc/stdio/vfwprintf.c : 1.8 150 file libexec/ld.elf_so/arch/m68k/mdreloc.c : 1.20 151 file libexec/ld.elf_so/arch/sparc/mdreloc.c : 1.39 152 file libexec/ld.elf_so/arch/sparc64/mdreloc.c : 1.39 153 file libexec/ld.elf_so/arch/x86_64/mdreloc.c : 1.27 154 file sbin/fsck_ext2fs/dir.c : 1.19 155 file sbin/routed/rtquery/rtquery.c : 1.18 156 file sys/crypto/cast128/cast128.c : 1.9 157 file sys/ddb/db_command.c : 1.86 158 file sys/dev/cardbus/cardbus_map.c : 1.21 159 file sys/dev/fss.c : 1.25 160 file sys/dev/ic/igsfb.c : 1.39 161 file sys/dev/ic/mb86950.c : 1.5 162 file sys/dev/ic/midway.c : 1.71 163 file sys/dev/kttcp.c : 1.18 164 file sys/dev/rasops/rasops_bitops.h : 1.9 165 file sys/dev/pci/cmpci.c : 1.31 166 file sys/dev/pci/machfb.c : 1.45 167 file sys/dev/usb/ohci.c : 1.174 168 file sys/dev/usb/uhci.c : 1.196 169 file sys/dev/rasops/rasops_bitops.h : 1.9 170 file sys/dist/ipf/netinet/ip_nat.c : 1.10 171 file sys/dist/ipf/netinet/ip_rpcb_pxy.c : 1.8 172 file sys/dist/pf/net/pf.c : 1.22 173 file sys/fs/udf/udf_vnops.c : 1.4 174 file sys/kern/kern_sig.c : 1.219 175 file sys/kern/tty.c : 1.181 176 file sys/net/bpf.c : 1.116 177 file sys/net/zlib.c : 1.26 178 file sys/netccitt/if_x25subr.c : 1.37 179 file sys/netinet/in.c : 1.107 180 file sys/netsmb/smb_smb.c : 1.27 181 file sys/netsmb/smb_trantcp.c : 1.22 182 file sys/nfs/nfs_serv.c : 1.108 183 file sys/nfs/nfs_socket.c : 1.129 184 file sys/nfs/nfs_syscalls.c : 1.91 185 file sys/ufs/lfs/lfs_vfsops.c : 1.207 [also (char *)] 186 file usr.bin/ftp/ftp.c : 1.140 187 file usr.bin/find/function.c : 1.54 188 file usr.bin/mail/tty.c : 1.20 189 file usr.bin/nl/nl.c : 1.7 190 file usr.bin/systat/keyboard.c : 1.23 191 file usr.bin/usbhidctl/usbhid.c : 1.29 192 file usr.bin/vi/cl/cl_read.c : 1.5 193 file usr.bin/vi/ex/ex_cscope.c : 1.12 194 file usr.bin/vi/ex/ex_tag.c : 1.19 195 file usr.bin/vi/vi/v_txt.c : 1.15 196 file usr.sbin/altq/altqstat/qdisc_rio.c : 1.4 197 file usr.sbin/cron/do_command.c : 1.19 198 file usr.sbin/timed/timed/slave.c : 1.15 199 descr 200 GCC 4.1 gets many uninitialised variable warnings wrong. We should 201 really audit all the old hacks like this when older compilers are 202 removed from the tree, as many are probably no longer required. 203 The problem is that it does not recognize initialization via function 204 call pointer. I.e. 205 int p; 206 foo(&p); 207 does not mark p as initialized. 208 kcah 209 210 hack gcc4 pointer sign and strict aliasing problems 211 mdate 10 May 2006 212 who mrg 213 file bin/ed/Makefile : 1.33 214 file bin/systrace/Makefile : 1.12 215 file distrib/utils/sysinst/Makefile.inc : 1.44 216 file games/bcd/Makefile : 1.5 217 file games/dab/Makefile : 1.5 218 file games/larn/Makefile : 1.17 219 file games/pom/Makefile : 1.5 220 file lib/libasn1/Makefile : 1.26 221 file lib/libcrypt/Makefile : 1.17 222 file lib/libgssapi/Makefile : 1.16 223 file lib/libhdb/Makefile : 1.20 224 file lib/libkadm5clnt/Makefile : 1.21 225 file lib/libkadm5srv/Makefile : 1.25 226 file lib/libkrb5/Makefile : 1.35 227 file lib/libssh/Makefile : 1.6 228 file lib/libtelnet/Makefile : 1.26 229 file libexec/getty/Makefile : 1.14 230 file libexec/kadmind/Makefile : 1.19 231 file libexec/kpasswdd/Makefile : 1.14 232 file sbin/atactl/Makefile : 1.3 233 file sbin/cgdconfig/Makefile : 1.7 234 file sbin/clri/Makefile : 1.13 235 file sbin/dkctl/Makefile : 1.4 236 file sbin/dump/Makefile : 1.33 237 file sbin/fdisk/Makefile : 1.35 238 file sbin/fsck_ext2fs/Makefile : 1.11 239 file sbin/fsck_ffs/Makefile : 1.29 240 file sbin/fsdb/Makefile : 1.18 241 file sbin/mount_smbfs/Makefile : 1.4 242 file sbin/newfs/Makefile : 1.30 243 file sbin/newfs_sysvbfs/Makefile : 1.2 244 file sbin/restore/Makefile : 1.23 245 file sbin/veriexecctl/Makefile : 1.11 246 file sys/lib/libsa/Makefile : 1.59 247 file sys/arch/evbarm/adi_brh/brh_machdep.c : 1.24 248 file usr.bin/awk/Makefile : 1.9 249 file usr.bin/crontab/Makefile : 1.24 250 file usr.bin/ctags/Makefile : 1.8 251 file usr.bin/gzip/Makefile : 1.10 252 file usr.bin/ssh/sftp/Makefile : 1.10 253 file usr.bin/ssh/ssh/Makefile : 1.25 254 file usr.bin/vi/build/Makefile : 1.26 255 file usr.bin/telnet/Makefile : 1.40 256 file usr.bin/tn3270/tn3270/Makefile : 1.36 257 file usr.bin/tr/Makefile : 1.4 258 file usr.sbin/amd/amd/Makefile : 1.27 259 file usr.sbin/amd/amq/Makefile : 1.14 260 file usr.sbin/amd/libamu/Makefile : 1.20 261 file usr.sbin/amd/pawd/Makefile : 1.5 262 file usr.sbin/bind/Makefile.inc : 1.22 263 file usr.sbin/bind/libdns/Makefile : 1.3 264 file usr.sbin/bind/named/Makefile : 1.17 265 file usr.sbin/bootp/bootptest/Makefile : 1.2 266 file usr.sbin/chrtbl/Makefile : 1.6 267 file usr.sbin/cron/Makefile : 1.12 268 file usr.sbin/dhcp/Makefile.inc : 1.20 269 file usr.sbin/dumplfs/Makefile : 1.11 270 file usr.sbin/hprop/Makefile : 1.13 271 file usr.sbin/installboot/Makefile : 1.35 272 file usr.sbin/ipf/ipftest/Makefile : 1.32 273 file usr.sbin/isdn/isdnd/Makefile : 1.6 274 file usr.sbin/isdn/isdnmonitor/Makefile : 1.3 275 file usr.sbin/isdn/isdntel/Makefile : 1.2 276 file usr.sbin/isdn/isdntrace/Makefile : 126 277 file usr.sbin/mopd/common/Makefile : 1.10 278 file usr.sbin/mopd/mopd/Makefile : 1.9 279 file usr.sbin/mopd/mopprobe/Makefile : 1.7 280 file usr.sbin/makefs/Makefile : 1.17 281 file usr.sbin/mscdlabel/Makefile : 1.5 282 file usr.sbin/pkg_install/add/Makefile : 1.7 283 file usr.sbin/pkg_install/create/Makefile : 1.5 284 file usr.sbin/pkg_install/lib/Makefile : 1.28 285 file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11 286 file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5 287 file usr.sbin/pppd/Makefile.inc : 1.3 288 file usr.sbin/pppd/pppd/Makefile : 1.38 289 file usr.sbin/rarpd/Makefile : 1.10 290 file usr.sbin/rbootd/Makefile : 1.10 291 file usr.sbin/rpc.pcnfsd/Makefile : 1.17 292 file usr.sbin/rtadvd/Makefile : 1.9 293 file usr.sbin/tcpdump/Makefile : 1.42 294 file usr.sbin/wiconfig/Makefile : 1.3 295 descr 296 GCC 4.1 warns on pointer sign comparision/assignments and lots of 297 code does not conform. For now we use -Wno-pointer-sign and 298 -fno-strict-aliasing. 299 kcah 300 301 port vax 302 303 hack gcc 2.95/vax doesn't like abort being used as function pointer 304 cdate Tue Dec 13 05:54:50 GMT 2005 305 who jmc 306 file lib/libc/rpc/svc_vc.c 1.15 307 descr 308 Provide a local definition for abort which doesn't include 309 the noreturn attribute which trips up gcc 2.95 on vax. 310 311 hack gcc 2.95/vax doesn't have stdbool.h and gettext needs it 312 cdate Mon May 9 12:16:22 CDT 2005 313 who jmc 314 file gnu/usr.bin/gettext/Makefile.inc.prog 1.5 315 gnu/usr.bin/gettext/libgrep/Makefile 1.3 316 gnu/usr.bin/gettext/libnlspr/Makefile 1.5 317 gnu/usr.bin/gettext/libnlsut/Makefile 1.3 318 descr 319 The latest gettext assumes a C99 environment or at least 320 configure checks to work around this. As we don't use configure 321 provide a stdbool.h for vax builds locally in directories from 322 the template provided by the gettext code. 323 324 hack gcc 2.95/vax can't handle __used__ in mcount.c 325 cdate Fri May 6 14:30:53 CDT 2005 326 who jmc 327 file src/lib/libc/gmon/mcount.c 1.17 328 descr 329 Recent changes to mark this as __used__ to prevent optimization 330 away on sparc64 don't work on 2.95 vax. Ifdef'd back in the 331 old __unused__ if on vax. 332 333 hack gcc 2.95/vax cannot handle __builtin_ffs() 334 cdate Fri Aug 23 21:31:15 CEST 2002 335 who ragge 336 file sys/lib/libkern/libkern.h : 1.42 337 descr 338 __builtin_ffs() is ifdef'd away if __vax__. Matt Thomas has 339 added this feature to GCC 3 so it can be removed when switching. 340 341 342 hack gcc-vax-libbz2 343 mdate 27 Jun 2002 344 who thorpej 345 file lib/libbz2/Makefile 346 descr 347 libbz2 is mis-compiled with optimization with GCC 2.95.3 348 on VAX. -O0 works around this problem. 349 kcah 350 351 hack gawk 352 mdate 8 Nov 2003 353 who ragge 354 file gnu/usr.bin/gawk/Makefile 355 descr 356 gawk is mis-compiled with optimization with GCC 2.95.3 357 on VAX. -O0 works around this problem. 358 kcah 359 360 hack vax Toolchain bug 361 cdate 28 Mar 2003 362 who he 363 file sys/arch/vax/vax/intvec.S : 1.5 364 descr 365 Workaround for PR toolchain/20924. The assembler apparently 366 tries to range-check byte offsets when it doesn't have 367 sufficient information to make that decision. 368 Workaround uses `brw' instead of `brb' instruction. 369 kcah 370 371 hack vax gcc 2.95.3 -Wuninitialized workarounds 372 cdate 6 Nov 2003 373 who he 374 file sys/dev/bi/if_ni.c : 1.22 375 file sys/arch/vax/vax/ctu.c : 1.20 376 descr 377 Workaround for gcc 2.95.3 failing to detect that certain 378 variables will be initialized; so that this code compiles 379 with -Wuninitialized. Should be reviewed and possibly 380 reverted when gcc 3.3.2 is ready for vax. 381 kcah 382 383 hack vax gcc 2.95.3 structure initialization 384 cdat 13 May 2004 385 who cl 386 file sys/miscfs/kernfs/kernfs_vnops.c : 1.104 387 descr 388 Workaround for gcc 2.95.3 failing to initialize structures 389 and/or unions inside structures using nested designators. 390 Should be reverted when gcc >=3.3.3 is ready for vax. 391 kcah 392 393 hack vax gcc 2.95.3 needs -I. to build nslexer.c 394 cdat 6 Jun 2004 395 who mhitch 396 file lib/libc/arch/vax/Makefile.inc : 1.6 397 descr 398 It appears necessary to add -I. to CPPFLAGS when building 399 nslesxer.c. This may be caused by gcc 2.95.3 being used. 400 Should be reverted when a newer gcc is ready for vax. 401 kcah 402 403 hack vax gcc 2.95.3 doesn't understand "-std=c99" 404 cdat 5 April 2005 405 who tron 406 file src/share/mk/bsd.sys.mk 407 descr 408 We cannot use "-std=c99" for compiler warning level 4 and above 409 because gcc 2.95.3 doesn't support that option. 410 kcah 411 412 hack declare boolean_t in two IPF user-mode programs 413 cdate Tue Mar 7 19:19:20 CET 2006 414 who he 415 file dist/ipf/ipsend/iptests.c : 1.8 416 dist/ipf/ipsend/sock.c : 1.7 417 descr 418 The IPF user-mode programs ipsend and iptest first 419 include <sys/types.h> without _KERNEL defined, and 420 later include <sys/file.h> with _KERNEL defined. 421 This causes a build failure when building for vax, 422 since <sys/device.h> ends up being included without 423 bollean_t being defined by <sys/types.h>. 424 Build failure and further details documented in 425 PR#32907. 426 kcah 427 428 port sparc64 429 430 hack binutil-2.11-sparc64-pltrela 431 mdate 14 Aug 2001 432 who eeh 433 file libexec/ld.elf_so/arch/sparc64/mdreloc.c 434 descr 435 The first four PLT entries are reserved. There is some 436 disagreement whether they should have associated relocation 437 entries. Both the SPARC 32-bit and 64-bit ELF specifications 438 say that they should have relocation entries, but the 32-bit 439 SPARC binutils do not generate them, and now the 64-bit SPARC 440 binutils have stopped generating them too. 441 442 To provide binary compatibility, we will check the first entry, 443 if it is reserved it should not be of the type JMP_SLOT. If it 444 is JMP_SLOT, then the 4 reserved entries were not generated and 445 our index is 4 entries too far, so we frob the rela pointer. 446 kcah 447 448 449 port arm 450 451 hack gcc-unsigned-compare 452 cdate 09 Mar 2002 453 mdate 18 Mar 2002 454 who bjh21 455 file dist/bind/lib/nameser/ns_parse.c : 1.3 456 file dist/dhcp/minires/ns_parse.c : 1.3 457 file dist/dhcp/omapip/result.c : 1.2 458 file dist/dhcp/server/failover.c : 1.3 459 file gnu/dist/gawk/eval.c : 1.4 460 file gnu/dist/toolchain/bfd/bfd.c : 1.2 461 file gnu/dist/toolchain/bfd/format.c : 1.2 462 file gnu/dist/toolchain/gdb/target.c : 1.2 463 file sys/kern/vfs_subr.c : 1.172 464 descr When checking that a potentially-unsigned enum is >= 0, assign 465 it to an int first. This is necessary to avoid "comparison is 466 always true" warnings with -fshort-enums. Casting to an int 467 really should be enough, but turns out not to be. 468 kcah 469 470 hack gcc 3.3.2/arm sys/kern/uipc_socket.c 471 cdate Tue Oct 28 18:02:16 GMT 2003 472 who skrll 473 pr 23044 474 file sys/arch/arm/conf/Makefile.arm : 1.19 475 descr 476 Performing a build.sh tools on a CATS with NFS mounted 477 obj and src directories results in "panic: receive 1" 478 The hack is to compile sys/kern/uipc_socket.c with 479 -fno-strict-aliasing 480 kcah 481 482 483 port pc532 484 485 hack egcs-pc532-ip6_mroute 486 cdate 09 Jul 2002 487 who simonb 488 file sys/arch/pc532/conf/Makefile.pc532 : 1.70 489 file sys/arch/pc532/conf/files.pc532 : 1.47 490 descr 491 egcs 1.1.2 gets an "internal error--insn does not satisfy its 492 constraints" error compiling ip6_mroute.c with -O2 or greater. 493 -O1 works around this problem. 494 kcah 495 496 hack gcc-pc532-duffs_device 497 cdate Mon Oct 27 07:23:05 UTC 2003 498 who simonb 499 file sys/arch/pc532/conf/Makefile.pc532 : 1.71 500 file sys/arch/pc532/conf/files.pc532 : 1.52 501 pr GCC PR optimization/5230 502 descr 503 gcc incorrectly gives an "unreachable code at beginning of 504 switch statement" for a Duff's device construct in 505 arch/pc532/dev/ncr.c. There is no way to disable just this 506 warning, so -Wno-error is turned on for this file. 507 kcah 508 509 hack gcc332-cppmacro-ice 510 cdate Sun Dec 7 12:48:33 UTC 2003 511 who simonb 512 file gnu/usr.bin/gcc3/libcpp/Makefile : 1.2 513 descr 514 gcc 3.3.2 gets an ICE when compiling cppmacro.c with -O2. 515 The hack is to use -O1 for this file. Fixed in gcc 516 -current mainline, unable to work out where the fix is 517 right now. 518 kcah 519 520 521 port sh3 522 523 hack gcc-sh3-sed 524 mdate 23 Apr 2002 525 who thorpej 526 file usr.bin/sed/Makefile : 1.9 : 9 : 13 527 descr 528 The in-tree GCC 2.95.3-based compiler ICEs when building 529 with optimization for SuperH. Hack is to build with -O0. 530 kcah 531 532 533 port sh5 534 535 hack SuperH SH5 Toolchain Bugs 536 cdate 11 Jul 2002 537 who scw 538 file usr.sbin/ndbootd/ndbootd.c : 1.6 539 file usr.sbin/traceroute/traceroute.c : 1.48 540 descr 541 The SuperH SH5 toolchain (2.97-sh5-010522) gets an internal 542 compiler error when assigning a bit-wise inverted value 543 under some circumstances. 544 Work around it by splitting the statement into two. 545 kcah 546 547 hack SuperH SH5 Toolchain Bugs 548 cdate 17 May 2003 549 who scw 550 file lib/libpthread/pthread_lock.c : 1.7 551 descr 552 The SuperH SH5 toolchain generates incorrect PIC code when 553 faced with a symbol which is declared extern, but has local 554 scope due to being defined within an asm() statement (without 555 being declared .globl in that statement). Work around it by 556 adding the .globl. 557 kcah 558 559 hack gcc 3.3.2 on sh5 - ICE compiling reload1.c at -O2 560 cdate Sun Dec 7 19:44:05 GMT 2003 561 who scw 562 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 563 descr 564 Gcc3 for sh5 gets an ICE compiling reload1.c at -O2. 565 Drop to -O1 for now when building for sh5. 566 kcah 567 568 hack gcc 3.3.2 on sh5 - ICE compiling elf32.c/elf64.c at -O2 569 cdate Sun Dec 7 21:10:46 GMT 2003 570 who scw 571 file gnu/lib/libbfd/Makefile : 1.39 572 descr 573 Gcc3 for sh5 gets an ICE compiling libbfd's elf32.c 574 and elf64.c at -O2. 575 Drop to -O1 for now when building for sh5. 576 kcah 577 578 579 hack gcc 3.3.2 on sh5 - fatal warning compiling function.c 580 cdate Sun Dec 7 19:44:05 GMT 2003 581 who scw 582 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 583 descr 584 Gcc3 for sh5 issues a warning: 585 .../gnu/dist/gcc/gcc/function.c:4742: warning: `and' of 586 mutually exclusive equal-tests is always 0. 587 This causes the build to fail because of -Werror. 588 Work-around by defining NOGCCERROR when building for sh5. 589 kcah 590 591 hack gcc 3.3.3 on sh5 - ICE compiling rbtdb.c and rbtdb64.c 592 cdate Thu Nov 11 00:35:33 UTC 2004 593 who he 594 file usr.sbin/bind/libdns/Makefile/1.2 595 descr 596 Gcc3 for sh5 gets an ICE compiling these files at -O2. 597 Drop to -O1 for now when building for sh5. 598 kcah 599 600 hack gcc 3.3.3 nb3 on sh5 - ICE compiling bsd-comp.c 601 cdate Thu May 25 23:05:20 UTC 2005 602 who he 603 file sys/lkm/net/bsdcomp/Makefile : 1.3 604 descr 605 Gcc3 for sh5 gets an ICE compiling this at -O2, 606 "could not split insn". Drop to -O1 for sh5. 607 kcah 608 609 hack gcc 3.3.3 nb3 on sh5 - ICE compiling strtod.c 610 cdate Tue Jan 31 10:51:52 GMT 2006 611 who scw 612 file lib/libc/gdtoa/Makefile.inc : 1.2 613 descr 614 Gcc3 for sh5 gets an ICE compiling this at -O2, 615 "could not split insn". Drop to -O1 for sh5. 616 kcah 617 618 port sun2 619 620 hack gcc 3.3.2/mdsetimage 621 cdate Tue Oct 28 18:43:05 EST 2003 622 who fredette 623 file gnu/usr.sbin/mdsetimage/Makefile : 1.15 624 descr 625 mdsetimage.c causes cc1 to barf for as-yet unknown reasons. 626 this hack uses -O0 to avoid the problem. 627 kcah 628 629 hack gcc 3.3.2/installboot/ffs.c 630 cdate Tue Oct 28 18:43:05 EST 2003 631 who fredette 632 file usr.sbin/installboot/Makefile : 1.26 633 descr 634 ffs.c causes cc1 to barf for as-yet unknown reasons. this 635 hack uses -O0 to avoid the problem. 636 kcah 637 638 639 port m68000 640 641 hack gcc 3.3.2/gcc/ra-colorize.c 642 cdate Wed Nov 5 11:03:13 EST 2003 643 who mrg 644 file gnu/usr.bin/gcc3/backend/Makefile : 1.11 645 descr 646 ra-colorize.c causes a whole spew of unreferenced .L* local 647 symbols. using -O0 (or even -O2 reportedly) avoids the problem. 648 Note this has been fixed in 3.3.3 at least on m68k, 649 but it hasn't been confirmed on sun2/m68000. 650 (it's too slow even on emulator and unlikely to build 651 toolchains on sun2 with its maximum 4MB RAM) 652 kcah 653 654 port sparc64 655 656 hack disable optimzations for uvm_bio.c on 32 bit kernels 657 cdate Sun Mar 21 14:14:04 MET 2004 658 who martin 659 file sys/arch/sparc64/conf/Makefile.sparc64 : 1.53-1.54 660 file sys/arch/sparc64/conf/files.sparc64 : 1.93 661 descr 662 The sparc compiler miscompiles uvm_bio.c when using 663 any optimization. This results in ubc_release panics. 664 kcah 665 666 port macppc 667 668 hack remove inline from rotate_{left,right} 669 cdate Tue Feb 22 13:43:25 EST 2005 670 who christos 671 file src/dist/bind/lib/dns/rbt.c 672 descr 673 The macppc gcc-3.3 compiler miscompiles rbt.c when these 674 functions are inlined. The error is: 675 .* named[368]: rbt.c:1584: INSIST(child != (void *)0) >failed 676 .* named[368]: exiting (due to assertion failure) 677 This is reportedly fixed in gcc-3.4 678 kcah 679 680 port hppa 681 682 hack hppa-gcc-3.3.3/grep/dfa.c 683 cdate Sun Aug 8 08:34:32 PDT 2004 684 who chs 685 file gnu/usr.bin/grep/grep/Makefile : 1.4 686 descr 687 gcc 3.3.3 generates bad code for dfa.c with -O2, 688 reduce optimization to -O1 to avoid the bug. 689 kcah 690 691 hack hppa-gcc-3.3.3 / make/buf.c 692 cdate Mon May 8 13:02:36 CEST 2006 693 who he 694 file usr.bin/make/Makefile : 1.34 695 descr 696 gcc 3.3.3 nb3 gets an "unrecognized insn" internal 697 compiler error when building this file with -O2, 698 reduce optimization to -O1 to avoid the bug. 699 kcah 700 701 hack hppa boot-from-disk memory corruption 702 cdate Wed May 18 06:56:07 PDT 2005 703 who chs 704 file src/sys/dev/scsipi/scsipiconf.h : 1.98 705 descr 706 There is some bug with DMA on hppa that corrupts scsipi_xfer 707 structures, but it only shows up when booting from disk. 708 For now, we'll add some padding to scsipi_xfer so that 709 the corrupted memory is not otherwise used. 710 kcah 711 712 port mips 713 714 hack mips-shared-linker-load-address 715 cdate Fri Oct 7 08:33:10 UTC 2005 716 who simonb 717 file src/sys/kern/exec_elf32.c : 1.107 718 descr 719 With COMPAT_16 or previous enabled (which enables 720 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 721 load and run at address 0. The check to fix this in 722 rev 1.107 only checks the first psection of the ELF 723 executable, which may not be loadable. A more correct 724 fix is to check the first loadable psection instead of 725 just the first psection. 726 kcah 727 728
Indexes created Wed Nov 05 21:10:10 GMT 2025