HACKS revision 1.92
1 # $NetBSD: HACKS,v 1.92 2007/01/08 17:41:21 chs 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 uninitialized 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/powerpc/ppc_reloc.c : 1.40 152 file libexec/ld.elf_so/arch/sh3/mdreloc.c : 1.22 153 file libexec/ld.elf_so/arch/sparc/mdreloc.c : 1.39 154 file libexec/ld.elf_so/arch/sparc64/mdreloc.c : 1.39 155 file libexec/ld.elf_so/arch/vax/mdreloc.c : 1.21 156 file libexec/ld.elf_so/arch/x86_64/mdreloc.c : 1.27 157 file sbin/fsck_ext2fs/dir.c : 1.19 158 file sbin/routed/rtquery/rtquery.c : 1.18 159 file sys/arch/amd64/amd64/pmap.c : 1.26 160 file sys/arch/i386/pci/piixpcib.c : 1.4 161 file sys/arch/m68k/m68k/pmap_motorola.c : 1.4 162 file sys/crypto/cast128/cast128.c : 1.9 163 file sys/ddb/db_command.c : 1.86 164 file sys/dev/cardbus/cardbus_map.c : 1.21 165 file sys/dev/fss.c : 1.25 166 file sys/dev/ic/igsfb.c : 1.39 167 file sys/dev/ic/mb86950.c : 1.5 168 file sys/dev/ic/midway.c : 1.71 169 file sys/dev/kttcp.c : 1.18 170 file sys/dev/rasops/rasops_bitops.h : 1.9 171 file sys/dev/pci/cmpci.c : 1.31 172 file sys/dev/pci/machfb.c : 1.45 173 file sys/dev/usb/ohci.c : 1.174 174 file sys/dev/usb/uhci.c : 1.196 175 file sys/dev/rasops/rasops_bitops.h : 1.9 176 file sys/dist/ipf/netinet/ip_nat.c : 1.10 177 file sys/dist/ipf/netinet/ip_rpcb_pxy.c : 1.8 178 file sys/dist/pf/net/pf.c : 1.22 179 file sys/fs/udf/udf_vnops.c : 1.4 180 file sys/kern/kern_sig.c : 1.219 181 file sys/kern/tty.c : 1.181 182 file sys/net/bpf.c : 1.116 183 file sys/net/zlib.c : 1.26 184 file sys/netccitt/if_x25subr.c : 1.37 185 file sys/netinet/in.c : 1.107 186 file sys/netsmb/smb_smb.c : 1.27 187 file sys/netsmb/smb_trantcp.c : 1.22 188 file sys/nfs/nfs_serv.c : 1.108 189 file sys/nfs/nfs_socket.c : 1.129 190 file sys/nfs/nfs_syscalls.c : 1.91 191 file sys/ufs/lfs/lfs_vfsops.c : 1.207 [also (char *)] 192 file usr.bin/ftp/ftp.c : 1.140 193 file usr.bin/find/function.c : 1.54 194 file usr.bin/mail/tty.c : 1.20 195 file usr.bin/nl/nl.c : 1.7 196 file usr.bin/systat/keyboard.c : 1.23 197 file usr.bin/usbhidctl/usbhid.c : 1.29 198 file usr.bin/vi/cl/cl_read.c : 1.5 199 file usr.bin/vi/ex/ex_cscope.c : 1.12 200 file usr.bin/vi/ex/ex_tag.c : 1.19 201 file usr.bin/vi/vi/v_txt.c : 1.15 202 file usr.sbin/altq/altqstat/qdisc_rio.c : 1.4 203 file usr.sbin/cron/do_command.c : 1.19 204 file usr.sbin/timed/timed/slave.c : 1.15 205 descr 206 GCC 4.1 gets many uninitialised variable warnings wrong. We should 207 really audit all the old hacks like this when older compilers are 208 removed from the tree, as many are probably no longer required. 209 The problem is that it does not recognize initialization via function 210 call pointer. I.e. 211 int p; 212 foo(&p); 213 does not mark p as initialized. 214 kcah 215 216 hack gcc4 pointer sign and strict aliasing problems 217 mdate 10 May 2006 218 who mrg 219 file bin/ed/Makefile : 1.33 220 file bin/systrace/Makefile : 1.12 221 file distrib/utils/sysinst/Makefile.inc : 1.44 222 file distrib/utils/x_dhclient/Makefile : 1.15 223 file games/bcd/Makefile : 1.5 224 file games/dab/Makefile : 1.5 225 file games/larn/Makefile : 1.17 226 file games/pom/Makefile : 1.5 227 file lib/libasn1/Makefile : 1.26 228 file lib/libcrypt/Makefile : 1.17 229 file lib/libgssapi/Makefile : 1.16 230 file lib/libhdb/Makefile : 1.20 231 file lib/libkadm5clnt/Makefile : 1.21 232 file lib/libkadm5srv/Makefile : 1.25 233 file lib/libkrb5/Makefile : 1.35 234 file lib/libssh/Makefile : 1.6 235 file lib/libtelnet/Makefile : 1.26 236 file libexec/getty/Makefile : 1.14 237 file libexec/kadmind/Makefile : 1.19 238 file libexec/kpasswdd/Makefile : 1.14 239 file sbin/atactl/Makefile : 1.3 240 file sbin/cgdconfig/Makefile : 1.7 241 file sbin/clri/Makefile : 1.13 242 file sbin/dkctl/Makefile : 1.4 243 file sbin/dump/Makefile : 1.33 244 file sbin/fdisk/Makefile : 1.35 245 file sbin/fsck_ext2fs/Makefile : 1.11 246 file sbin/fsck_ffs/Makefile : 1.29 247 file sbin/fsdb/Makefile : 1.18 248 file sbin/mount_smbfs/Makefile : 1.4 249 file sbin/newfs/Makefile : 1.30 250 file sbin/newfs_sysvbfs/Makefile : 1.2 251 file sbin/restore/Makefile : 1.23 252 file sbin/veriexecctl/Makefile : 1.11 253 file sys/lib/libsa/Makefile : 1.59 254 file sys/arch/evbarm/adi_brh/brh_machdep.c : 1.24 255 file usr.bin/awk/Makefile : 1.9 256 file usr.bin/crontab/Makefile : 1.24 257 file usr.bin/ctags/Makefile : 1.8 258 file usr.bin/gzip/Makefile : 1.10 259 file usr.bin/ssh/sftp/Makefile : 1.10 260 file usr.bin/ssh/ssh/Makefile : 1.25 261 file usr.bin/vi/build/Makefile : 1.26 262 file usr.bin/telnet/Makefile : 1.40 263 file usr.bin/tn3270/tn3270/Makefile : 1.36 264 file usr.bin/tr/Makefile : 1.4 265 file usr.sbin/amd/amd/Makefile : 1.27 266 file usr.sbin/amd/amq/Makefile : 1.14 267 file usr.sbin/amd/libamu/Makefile : 1.20 268 file usr.sbin/amd/pawd/Makefile : 1.5 269 file usr.sbin/bind/Makefile.inc : 1.22 270 file usr.sbin/bind/libdns/Makefile : 1.3 271 file usr.sbin/bind/named/Makefile : 1.17 272 file usr.sbin/bootp/bootptest/Makefile : 1.2 273 file usr.sbin/chrtbl/Makefile : 1.6 274 file usr.sbin/cron/Makefile : 1.12 275 file usr.sbin/dhcp/Makefile.inc : 1.20 276 file usr.sbin/dumplfs/Makefile : 1.11 277 file usr.sbin/hprop/Makefile : 1.13 278 file usr.sbin/installboot/Makefile : 1.35 279 file usr.sbin/ipf/ipftest/Makefile : 1.32 280 file usr.sbin/isdn/isdnd/Makefile : 1.6 281 file usr.sbin/isdn/isdnmonitor/Makefile : 1.3 282 file usr.sbin/isdn/isdntel/Makefile : 1.2 283 file usr.sbin/isdn/isdntrace/Makefile : 126 284 file usr.sbin/mopd/common/Makefile : 1.10 285 file usr.sbin/mopd/mopd/Makefile : 1.9 286 file usr.sbin/mopd/mopprobe/Makefile : 1.7 287 file usr.sbin/makefs/Makefile : 1.17 288 file usr.sbin/mscdlabel/Makefile : 1.5 289 file usr.sbin/pkg_install/add/Makefile : 1.7 290 file usr.sbin/pkg_install/create/Makefile : 1.5 291 file usr.sbin/pkg_install/lib/Makefile : 1.28 292 file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11 293 file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5 294 file usr.sbin/pppd/Makefile.inc : 1.3 295 file usr.sbin/pppd/pppd/Makefile : 1.38 296 file usr.sbin/rarpd/Makefile : 1.10 297 file usr.sbin/rbootd/Makefile : 1.10 298 file usr.sbin/rpc.pcnfsd/Makefile : 1.17 299 file usr.sbin/rtadvd/Makefile : 1.9 300 file usr.sbin/tcpdump/Makefile : 1.42 301 file usr.sbin/wiconfig/Makefile : 1.3 302 descr 303 GCC 4.1 warns on pointer sign comparision/assignments and lots of 304 code does not conform. For now we use -Wno-pointer-sign and 305 -fno-strict-aliasing. 306 kcah 307 308 port vax 309 310 hack gcc4/vax compiler crash 311 cdate Fri Jun 30 22:39:12 PDT 2006 312 who mrg 313 file bin/csh/Makefile : 1.27 314 file lib/i18n_module/UTF7/Makefile : 1.2 315 descr 316 GCC4 on vax crashes. -O0 stops it happening so far... 317 kcah 318 319 hack gcc 2.95/vax doesn't like abort being used as function pointer 320 cdate Tue Dec 13 05:54:50 GMT 2005 321 who jmc 322 file lib/libc/rpc/svc_vc.c 1.15 323 descr 324 Provide a local definition for abort which doesn't include 325 the noreturn attribute which trips up gcc 2.95 on vax. 326 kcah 327 328 hack gcc 2.95/vax doesn't have stdbool.h and gettext needs it 329 cdate Mon May 9 12:16:22 CDT 2005 330 who jmc 331 file gnu/usr.bin/gettext/Makefile.inc.prog 1.5 332 gnu/usr.bin/gettext/libgrep/Makefile 1.3 333 gnu/usr.bin/gettext/libnlspr/Makefile 1.5 334 gnu/usr.bin/gettext/libnlsut/Makefile 1.3 335 descr 336 The latest gettext assumes a C99 environment or at least 337 configure checks to work around this. As we don't use configure 338 provide a stdbool.h for vax builds locally in directories from 339 the template provided by the gettext code. 340 kcah 341 342 hack gcc 2.95/vax cannot handle __builtin_ffs() 343 cdate Fri Aug 23 21:31:15 CEST 2002 344 who ragge 345 file sys/lib/libkern/libkern.h : 1.42 346 descr 347 __builtin_ffs() is ifdef'd away if __vax__. Matt Thomas has 348 added this feature to GCC 3 so it can be removed when switching. 349 kcah 350 351 hack gcc-vax-libbz2 352 mdate 27 Jun 2002 353 who thorpej 354 file lib/libbz2/Makefile 355 descr 356 libbz2 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 arm 429 430 hack gcc-unsigned-compare 431 cdate 09 Mar 2002 432 mdate 18 Mar 2002 433 who bjh21 434 file dist/bind/lib/nameser/ns_parse.c : 1.3 435 file dist/dhcp/minires/ns_parse.c : 1.3 436 file dist/dhcp/omapip/result.c : 1.2 437 file dist/dhcp/server/failover.c : 1.3 438 file gnu/dist/toolchain/bfd/bfd.c : 1.2 439 file gnu/dist/toolchain/bfd/format.c : 1.2 440 file gnu/dist/toolchain/gdb/target.c : 1.2 441 file sys/kern/vfs_subr.c : 1.172 442 descr When checking that a potentially-unsigned enum is >= 0, assign 443 it to an int first. This is necessary to avoid "comparison is 444 always true" warnings with -fshort-enums. Casting to an int 445 really should be enough, but turns out not to be. 446 kcah 447 448 hack gcc 3.3.2/arm sys/kern/uipc_socket.c 449 cdate Tue Oct 28 18:02:16 GMT 2003 450 who skrll 451 pr 23044 452 file sys/arch/arm/conf/Makefile.arm : 1.19 453 descr 454 Performing a build.sh tools on a CATS with NFS mounted 455 obj and src directories results in "panic: receive 1" 456 The hack is to compile sys/kern/uipc_socket.c with 457 -fno-strict-aliasing 458 kcah 459 460 461 port pc532 462 463 hack egcs-pc532-ip6_mroute 464 cdate 09 Jul 2002 465 who simonb 466 file sys/arch/pc532/conf/Makefile.pc532 : 1.70 467 file sys/arch/pc532/conf/files.pc532 : 1.47 468 descr 469 egcs 1.1.2 gets an "internal error--insn does not satisfy its 470 constraints" error compiling ip6_mroute.c with -O2 or greater. 471 -O1 works around this problem. 472 kcah 473 474 hack gcc-pc532-duffs_device 475 cdate Mon Oct 27 07:23:05 UTC 2003 476 who simonb 477 file sys/arch/pc532/conf/Makefile.pc532 : 1.71 478 file sys/arch/pc532/conf/files.pc532 : 1.52 479 pr GCC PR optimization/5230 480 descr 481 gcc incorrectly gives an "unreachable code at beginning of 482 switch statement" for a Duff's device construct in 483 arch/pc532/dev/ncr.c. There is no way to disable just this 484 warning, so -Wno-error is turned on for this file. 485 kcah 486 487 hack gcc332-cppmacro-ice 488 cdate Sun Dec 7 12:48:33 UTC 2003 489 who simonb 490 file gnu/usr.bin/gcc3/libcpp/Makefile : 1.2 491 descr 492 gcc 3.3.2 gets an ICE when compiling cppmacro.c with -O2. 493 The hack is to use -O1 for this file. Fixed in gcc 494 -current mainline, unable to work out where the fix is 495 right now. 496 kcah 497 498 499 port sh3 500 501 hack gcc4-sh3-bz2 502 mdate 20 May 2006 503 who mrg 504 file lib/libbz2/Makefile : 1.10 505 descr 506 The in-tree GCC 4.1-based compiler generated too-far 507 pc-relative addresses. Hack is to build with -O0. 508 kcah 509 510 511 port sh5 512 513 hack SuperH SH5 Toolchain Bugs 514 cdate 11 Jul 2002 515 who scw 516 file usr.sbin/ndbootd/ndbootd.c : 1.6 517 file usr.sbin/traceroute/traceroute.c : 1.48 518 descr 519 The SuperH SH5 toolchain (2.97-sh5-010522) gets an internal 520 compiler error when assigning a bit-wise inverted value 521 under some circumstances. 522 Work around it by splitting the statement into two. 523 kcah 524 525 hack SuperH SH5 Toolchain Bugs 526 cdate 17 May 2003 527 who scw 528 file lib/libpthread/pthread_lock.c : 1.7 529 descr 530 The SuperH SH5 toolchain generates incorrect PIC code when 531 faced with a symbol which is declared extern, but has local 532 scope due to being defined within an asm() statement (without 533 being declared .globl in that statement). Work around it by 534 adding the .globl. 535 kcah 536 537 hack gcc 3.3.2 on sh5 - ICE compiling reload1.c at -O2 538 cdate Sun Dec 7 19:44:05 GMT 2003 539 who scw 540 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 541 descr 542 Gcc3 for sh5 gets an ICE compiling reload1.c at -O2. 543 Drop to -O1 for now when building for sh5. 544 kcah 545 546 hack gcc 3.3.2 on sh5 - ICE compiling elf32.c/elf64.c at -O2 547 cdate Sun Dec 7 21:10:46 GMT 2003 548 who scw 549 file gnu/lib/libbfd/Makefile : 1.39 550 descr 551 Gcc3 for sh5 gets an ICE compiling libbfd's elf32.c 552 and elf64.c at -O2. 553 Drop to -O1 for now when building for sh5. 554 kcah 555 556 557 hack gcc 3.3.2 on sh5 - fatal warning compiling function.c 558 cdate Sun Dec 7 19:44:05 GMT 2003 559 who scw 560 file gnu/usr.bin/gcc3/backend/Makefile : 1.13 561 descr 562 Gcc3 for sh5 issues a warning: 563 .../gnu/dist/gcc/gcc/function.c:4742: warning: `and' of 564 mutually exclusive equal-tests is always 0. 565 This causes the build to fail because of -Werror. 566 Work-around by defining NOGCCERROR when building for sh5. 567 kcah 568 569 hack gcc 3.3.3 on sh5 - ICE compiling rbtdb.c and rbtdb64.c 570 cdate Thu Nov 11 00:35:33 UTC 2004 571 who he 572 file usr.sbin/bind/libdns/Makefile/1.2 573 descr 574 Gcc3 for sh5 gets an ICE compiling these files at -O2. 575 Drop to -O1 for now when building for sh5. 576 kcah 577 578 hack gcc 3.3.3 nb3 on sh5 - ICE compiling bsd-comp.c 579 cdate Thu May 25 23:05:20 UTC 2005 580 who he 581 file sys/lkm/net/bsdcomp/Makefile : 1.3 582 descr 583 Gcc3 for sh5 gets an ICE compiling this at -O2, 584 "could not split insn". Drop to -O1 for sh5. 585 kcah 586 587 hack gcc 3.3.3 nb3 on sh5 - ICE compiling strtod.c 588 cdate Tue Jan 31 10:51:52 GMT 2006 589 who scw 590 file lib/libc/gdtoa/Makefile.inc : 1.2 591 descr 592 Gcc3 for sh5 gets an ICE compiling this at -O2, 593 "could not split insn". Drop to -O1 for sh5. 594 kcah 595 596 port sun2 597 598 hack gcc 3.3.2/mdsetimage 599 cdate Tue Oct 28 18:43:05 EST 2003 600 who fredette 601 file gnu/usr.sbin/mdsetimage/Makefile : 1.15 602 descr 603 mdsetimage.c causes cc1 to barf for as-yet unknown reasons. 604 this hack uses -O0 to avoid the problem. 605 kcah 606 607 hack gcc 3.3.2/installboot/ffs.c 608 cdate Tue Oct 28 18:43:05 EST 2003 609 who fredette 610 file usr.sbin/installboot/Makefile : 1.26 611 descr 612 ffs.c causes cc1 to barf for as-yet unknown reasons. this 613 hack uses -O0 to avoid the problem. 614 kcah 615 616 hack gcc 4.1.1/fsck_ffs/pass1.c 617 cdate Fri Jun 23 10:30:25 PDT 2006 618 who mrg 619 file sbin/fsck_ffs/Makefile : 1.30 620 file sbin/fsdb/Makefile : 1.19 621 file sbin/dump_lfs/Makefile : 1.9 622 file usr.sbin/ndbootd/Makefile : 1.2 623 descr 624 pass1.c causes cc1 to barf for as-yet unknown reasons. this 625 hack uses -O0 to avoid the problem. (these all seem to be the 626 same 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 mips 672 673 hack mips-shared-linker-load-address 674 cdate Fri Oct 7 08:33:10 UTC 2005 675 who simonb 676 file src/sys/kern/exec_elf32.c : 1.107 677 descr 678 With COMPAT_16 or previous enabled (which enables 679 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 680 load and run at address 0. The check to fix this in 681 rev 1.107 only checks the first psection of the ELF 682 executable, which may not be loadable. A more correct 683 fix is to check the first loadable psection instead of 684 just the first psection. 685 kcah 686 687 hack mips-duplicate-ras-end-label 688 cdate Sat Sep 2 23:29:42 2006 689 who martin 690 file src/regress/sys/kern/ras/ras3/Makefile : 1.3 691 descr 692 Add -fno-reorder-blocks to CFLAGS to avoid duplicate 693 labels by duplicated __asm output from RAS_END() 694 macro. 695 kcah 696 697 port i386 698 699 hack use volatile intermediate variable to enforce rounding 700 cdate Tue Aug 1 22:15:55 MEST 2006 701 who drochner 702 file src/lib/libm/src/lrintf.c : 1.4 703 file src/lib/libm/src/s_rintf.c : 1.8 704 descr 705 gcc-4 does subsequent operations on "float" values within 706 the i387 FPU without rounding the intermediate results 707 kcah 708
Indexes created Wed Nov 05 19:10:08 GMT 2025