HACKS revision 1.65
1 # $NetBSD: HACKS,v 1.65 2006/05/15 04:55:13 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 290 291 292 port vax 293 294 hack gcc 2.95/vax doesn't like abort being used as function pointer 295 cdate Tue Dec 13 05:54:50 GMT 2005 296 who jmc 297 file lib/libc/rpc/svc_vc.c 1.15 298 descr 299 Provide a local definition for abort which doesn't include 300 the noreturn attribute which trips up gcc 2.95 on vax. 301 302 hack gcc 2.95/vax doesn't have stdbool.h and gettext needs it 303 cdate Mon May 9 12:16:22 CDT 2005 304 who jmc 305 file gnu/usr.bin/gettext/Makefile.inc.prog 1.5 306 gnu/usr.bin/gettext/libgrep/Makefile 1.3 307 gnu/usr.bin/gettext/libnlspr/Makefile 1.5 308 gnu/usr.bin/gettext/libnlsut/Makefile 1.3 309 descr 310 The latest gettext assumes a C99 environment or at least 311 configure checks to work around this. As we don't use configure 312 provide a stdbool.h for vax builds locally in directories from 313 the template provided by the gettext code. 314 315 hack gcc 2.95/vax can't handle __used__ in mcount.c 316 cdate Fri May 6 14:30:53 CDT 2005 317 who jmc 318 file src/lib/libc/gmon/mcount.c 1.17 319 descr 320 Recent changes to mark this as __used__ to prevent optimization 321 away on sparc64 don't work on 2.95 vax. Ifdef'd back in the 322 old __unused__ if on vax. 323 324 hack gcc 2.95/vax cannot handle __builtin_ffs() 325 cdate Fri Aug 23 21:31:15 CEST 2002 326 who ragge 327 file sys/lib/libkern/libkern.h : 1.42 328 descr 329 __builtin_ffs() is ifdef'd away if __vax__. Matt Thomas has 330 added this feature to GCC 3 so it can be removed when switching. 331 332 333 hack gcc-vax-libbz2 334 mdate 27 Jun 2002 335 who thorpej 336 file lib/libbz2/Makefile 337 descr 338 libbz2 is mis-compiled with optimization with GCC 2.95.3 339 on VAX. -O0 works around this problem. 340 kcah 341 342 hack gawk 343 mdate 8 Nov 2003 344 who ragge 345 file gnu/usr.bin/gawk/Makefile 346 descr 347 gawk is mis-compiled with optimization with GCC 2.95.3 348 on VAX. -O0 works around this problem. 349 kcah 350 351 hack vax Toolchain bug 352 cdate 28 Mar 2003 353 who he 354 file sys/arch/vax/vax/intvec.S : 1.5 355 descr 356 Workaround for PR toolchain/20924. The assembler apparently 357 tries to range-check byte offsets when it doesn't have 358 sufficient information to make that decision. 359 Workaround uses `brw' instead of `brb' instruction. 360 kcah 361 362 hack vax gcc 2.95.3 -Wuninitialized workarounds 363 cdate 6 Nov 2003 364 who he 365 file sys/dev/bi/if_ni.c : 1.22 366 file sys/arch/vax/vax/ctu.c : 1.20 367 descr 368 Workaround for gcc 2.95.3 failing to detect that certain 369 variables will be initialized; so that this code compiles 370 with -Wuninitialized. Should be reviewed and possibly 371 reverted when gcc 3.3.2 is ready for vax. 372 kcah 373 374 hack vax gcc 2.95.3 structure initialization 375 cdat 13 May 2004 376 who cl 377 file sys/miscfs/kernfs/kernfs_vnops.c : 1.104 378 descr 379 Workaround for gcc 2.95.3 failing to initialize structures 380 and/or unions inside structures using nested designators. 381 Should be reverted when gcc >=3.3.3 is ready for vax. 382 kcah 383 384 hack vax gcc 2.95.3 needs -I. to build nslexer.c 385 cdat 6 Jun 2004 386 who mhitch 387 file lib/libc/arch/vax/Makefile.inc : 1.6 388 descr 389 It appears necessary to add -I. to CPPFLAGS when building 390 nslesxer.c. This may be caused by gcc 2.95.3 being used. 391 Should be reverted when a newer gcc is ready for vax. 392 kcah 393 394 hack vax gcc 2.95.3 doesn't understand "-std=c99" 395 cdat 5 April 2005 396 who tron 397 file src/share/mk/bsd.sys.mk 398 descr 399 We cannot use "-std=c99" for compiler warning level 4 and above 400 because gcc 2.95.3 doesn't support that option. 401 kcah 402 403 hack declare boolean_t in two IPF user-mode programs 404 cdate Tue Mar 7 19:19:20 CET 2006 405 who he 406 file dist/ipf/ipsend/iptests.c : 1.8 407 dist/ipf/ipsend/sock.c : 1.7 408 descr 409 The IPF user-mode programs ipsend and iptest first 410 include <sys/types.h> without _KERNEL defined, and 411 later include <sys/file.h> with _KERNEL defined. 412 This causes a build failure when building for vax, 413 since <sys/device.h> ends up being included without 414 bollean_t being defined by <sys/types.h>. 415 Build failure and further details documented in 416 PR#32907. 417 kcah 418 419 port sparc64 420 421 hack binutil-2.11-sparc64-pltrela 422 mdate 14 Aug 2001 423 who eeh 424 file libexec/ld.elf_so/arch/sparc64/mdreloc.c 425 descr 426 The first four PLT entries are reserved. There is some 427 disagreement whether they should have associated relocation 428 entries. Both the SPARC 32-bit and 64-bit ELF specifications 429 say that they should have relocation entries, but the 32-bit 430 SPARC binutils do not generate them, and now the 64-bit SPARC 431 binutils have stopped generating them too. 432 433 To provide binary compatibility, we will check the first entry, 434 if it is reserved it should not be of the type JMP_SLOT. If it 435 is JMP_SLOT, then the 4 reserved entries were not generated and 436 our index is 4 entries too far, so we frob the rela pointer. 437 kcah 438 439 440 port arm 441 442 hack gcc-unsigned-compare 443 cdate 09 Mar 2002 444 mdate 18 Mar 2002 445 who bjh21 446 file dist/bind/lib/nameser/ns_parse.c : 1.3 447 file dist/dhcp/minires/ns_parse.c : 1.3 448 file dist/dhcp/omapip/result.c : 1.2 449 file dist/dhcp/server/failover.c : 1.3 450 file gnu/dist/gawk/eval.c : 1.4 451 file gnu/dist/toolchain/bfd/bfd.c : 1.2 452 file gnu/dist/toolchain/bfd/format.c : 1.2 453 file gnu/dist/toolchain/gdb/target.c : 1.2 454 file sys/kern/vfs_subr.c : 1.172 455 descr When checking that a potentially-unsigned enum is >= 0, assign 456 it to an int first. This is necessary to avoid "comparison is 457 always true" warnings with -fshort-enums. Casting to an int 458 really should be enough, but turns out not to be. 459 kcah 460 461 hack gcc 3.3.2/arm sys/kern/uipc_socket.c 462 cdate Tue Oct 28 18:02:16 GMT 2003 463 who skrll 464 pr 23044 465 file sys/arch/arm/conf/Makefile.arm : 1.19 466 descr 467 Performing a build.sh tools on a CATS with NFS mounted 468 obj and src directories results in "panic: receive 1" 469 The hack is to compile sys/kern/uipc_socket.c with 470 -fno-strict-aliasing 471 kcah 472 473 474 port pc532 475 476 hack egcs-pc532-ip6_mroute 477 cdate 09 Jul 2002 478 who simonb 479 file sys/arch/pc532/conf/Makefile.pc532 : 1.70 480 file sys/arch/pc532/conf/files.pc532 : 1.47 481 descr 482 egcs 1.1.2 gets an "internal error--insn does not satisfy its 483 constraints" error compiling ip6_mroute.c with -O2 or greater. 484 -O1 works around this problem. 485 kcah 486 487 hack gcc-pc532-duffs_device 488 cdate Mon Oct 27 07:23:05 UTC 2003 489 who simonb 490 file sys/arch/pc532/conf/Makefile.pc532 : 1.71 491 file sys/arch/pc532/conf/files.pc532 : 1.52 492 pr GCC PR optimization/5230 493 descr 494 gcc incorrectly gives an "unreachable code at beginning of 495 switch statement" for a Duff's device construct in 496 arch/pc532/dev/ncr.c. There is no way to disable just this 497 warning, so -Wno-error is turned on for this file. 498 kcah 499 500 hack gcc332-cppmacro-ice 501 cdate Sun Dec 7 12:48:33 UTC 2003 502 who simonb 503 file gnu/usr.bin/gcc3/libcpp/Makefile : 1.2 504 descr 505 gcc 3.3.2 gets an ICE when compiling cppmacro.c with -O2. 506 The hack is to use -O1 for this file. Fixed in gcc 507 -current mainline, unable to work out where the fix is 508 right now. 509 kcah 510 511 512 port sh3 513 514 hack gcc-sh3-sed 515 mdate 23 Apr 2002 516 who thorpej 517 file usr.bin/sed/Makefile : 1.9 : 9 : 13 518 descr 519 The in-tree GCC 2.95.3-based compiler ICEs when building 520 with optimization for SuperH. Hack is to build with -O0. 521 kcah 522 523 524 port sh5 525 526 hack SuperH SH5 Toolchain Bugs 527 cdate 11 Jul 2002 528 who scw 529 file usr.sbin/ndbootd/ndbootd.c : 1.6 530 file usr.sbin/traceroute/traceroute.c : 1.48 531 descr 532 The SuperH SH5 toolchain (2.97-sh5-010522) gets an internal 533 compiler error when assigning a bit-wise inverted value 534 under some circumstances. 535 Work around it by splitting the statement into two. 536 kcah 537 538 hack SuperH SH5 Toolchain Bugs 539 cdate 17 May 2003 540 who scw 541 file lib/libpthread/pthread_lock.c : 1.7 542 descr 543 The SuperH SH5 toolchain generates incorrect PIC code when 544 faced with a symbol which is declared extern, but has local 545 scope due to being defined within an asm() statement (without 546 being declared .globl in that statement). Work around it by 547 adding the .globl. 548 kcah 549 550 hack gcc 3.3.2 on sh5 - ICE compiling reload1.c at -O2 551 cdate Sun Dec 7 19:44:05 GMT 2003 552 who scw 553 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 554 descr 555 Gcc3 for sh5 gets an ICE compiling reload1.c at -O2. 556 Drop to -O1 for now when building for sh5. 557 kcah 558 559 hack gcc 3.3.2 on sh5 - ICE compiling elf32.c/elf64.c at -O2 560 cdate Sun Dec 7 21:10:46 GMT 2003 561 who scw 562 file gnu/lib/libbfd/Makefile : 1.39 563 descr 564 Gcc3 for sh5 gets an ICE compiling libbfd's elf32.c 565 and elf64.c at -O2. 566 Drop to -O1 for now when building for sh5. 567 kcah 568 569 570 hack gcc 3.3.2 on sh5 - fatal warning compiling function.c 571 cdate Sun Dec 7 19:44:05 GMT 2003 572 who scw 573 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 574 descr 575 Gcc3 for sh5 issues a warning: 576 .../gnu/dist/gcc/gcc/function.c:4742: warning: `and' of 577 mutually exclusive equal-tests is always 0. 578 This causes the build to fail because of -Werror. 579 Work-around by defining NOGCCERROR when building for sh5. 580 kcah 581 582 hack gcc 3.3.3 on sh5 - ICE compiling rbtdb.c and rbtdb64.c 583 cdate Thu Nov 11 00:35:33 UTC 2004 584 who he 585 file usr.sbin/bind/libdns/Makefile/1.2 586 descr 587 Gcc3 for sh5 gets an ICE compiling these files at -O2. 588 Drop to -O1 for now when building for sh5. 589 kcah 590 591 hack gcc 3.3.3 nb3 on sh5 - ICE compiling bsd-comp.c 592 cdate Thu May 25 23:05:20 UTC 2005 593 who he 594 file sys/lkm/net/bsdcomp/Makefile : 1.3 595 descr 596 Gcc3 for sh5 gets an ICE compiling this at -O2, 597 "could not split insn". Drop to -O1 for sh5. 598 kcah 599 600 hack gcc 3.3.3 nb3 on sh5 - ICE compiling strtod.c 601 cdate Tue Jan 31 10:51:52 GMT 2006 602 who scw 603 file lib/libc/gdtoa/Makefile.inc : 1.2 604 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 port sun2 610 611 hack gcc 3.3.2/mdsetimage 612 cdate Tue Oct 28 18:43:05 EST 2003 613 who fredette 614 file gnu/usr.sbin/mdsetimage/Makefile : 1.15 615 descr 616 mdsetimage.c causes cc1 to barf for as-yet unknown reasons. 617 this hack uses -O0 to avoid the problem. 618 kcah 619 620 hack gcc 3.3.2/installboot/ffs.c 621 cdate Tue Oct 28 18:43:05 EST 2003 622 who fredette 623 file usr.sbin/installboot/Makefile : 1.26 624 descr 625 ffs.c causes cc1 to barf for as-yet unknown reasons. this 626 hack uses -O0 to avoid the problem. 627 kcah 628 629 630 port m68000 631 632 hack gcc 3.3.2/gcc/ra-colorize.c 633 cdate Wed Nov 5 11:03:13 EST 2003 634 who mrg 635 file gnu/usr.bin/gcc3/backend/Makefile : 1.11 636 descr 637 ra-colorize.c causes a whole spew of unreferenced .L* local 638 symbols. using -O0 (or even -O2 reportedly) avoids the problem. 639 Note this has been fixed in 3.3.3 at least on m68k, 640 but it hasn't been confirmed on sun2/m68000. 641 (it's too slow even on emulator and unlikely to build 642 toolchains on sun2 with its maximum 4MB RAM) 643 kcah 644 645 port sparc64 646 647 hack disable optimzations for uvm_bio.c on 32 bit kernels 648 cdate Sun Mar 21 14:14:04 MET 2004 649 who martin 650 file sys/arch/sparc64/conf/Makefile.sparc64 : 1.53-1.54 651 file sys/arch/sparc64/conf/files.sparc64 : 1.93 652 descr 653 The sparc compiler miscompiles uvm_bio.c when using 654 any optimization. This results in ubc_release panics. 655 kcah 656 657 port macppc 658 659 hack remove inline from rotate_{left,right} 660 cdate Tue Feb 22 13:43:25 EST 2005 661 who christos 662 file src/dist/bind/lib/dns/rbt.c 663 descr 664 The macppc gcc-3.3 compiler miscompiles rbt.c when these 665 functions are inlined. The error is: 666 .* named[368]: rbt.c:1584: INSIST(child != (void *)0) >failed 667 .* named[368]: exiting (due to assertion failure) 668 This is reportedly fixed in gcc-3.4 669 kcah 670 671 port hppa 672 673 hack hppa-gcc-3.3.3/grep/dfa.c 674 cdate Sun Aug 8 08:34:32 PDT 2004 675 who chs 676 file gnu/usr.bin/grep/grep/Makefile : 1.4 677 descr 678 gcc 3.3.3 generates bad code for dfa.c with -O2, 679 reduce optimization to -O1 to avoid the bug. 680 kcah 681 682 hack hppa-gcc-3.3.3 / make/buf.c 683 cdate Mon May 8 13:02:36 CEST 2006 684 who he 685 file usr.bin/make/Makefile : 1.34 686 descr 687 gcc 3.3.3 nb3 gets an "unrecognized insn" internal 688 compiler error when building this file with -O2, 689 reduce optimization to -O1 to avoid the bug. 690 kcah 691 692 hack hppa boot-from-disk memory corruption 693 cdate Wed May 18 06:56:07 PDT 2005 694 who chs 695 file src/sys/dev/scsipi/scsipiconf.h : 1.98 696 descr 697 There is some bug with DMA on hppa that corrupts scsipi_xfer 698 structures, but it only shows up when booting from disk. 699 For now, we'll add some padding to scsipi_xfer so that 700 the corrupted memory is not otherwise used. 701 kcah 702 703 port mips 704 705 hack mips-shared-linker-load-address 706 cdate Fri Oct 7 08:33:10 UTC 2005 707 who simonb 708 file src/sys/kern/exec_elf32.c : 1.107 709 descr 710 With COMPAT_16 or previous enabled (which enables 711 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 712 load and run at address 0. The check to fix this in 713 rev 1.107 only checks the first psection of the ELF 714 executable, which may not be loadable. A more correct 715 fix is to check the first loadable psection instead of 716 just the first psection. 717 kcah 718 719
Indexes created Wed Nov 05 19:10:08 GMT 2025