HACKS revision 1.145
1 # $NetBSD: HACKS,v 1.145 2014/04/04 01:23:34 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 gcc-strict-aliasing 88 cdate 6 August 2004 89 who junyoung 90 pr 26516 91 file src/usr.sbin/racoon/racoon/Makefile : 1.21 92 descr 93 GCC issues a warning "dereferencing type-punned pointer will break 94 strict-aliasing rules" when compiling 95 crypto/dist/kame/racoon/crypto/openssl.c with -O[23s]. Note that this 96 is due to use of type casting in a non-standard way in the code and 97 not a compiler bug. Once a new release of KAME with a proper fix 98 applied is imported this should be backed out. 99 kcah 100 101 hack gcc4 wrong uninitialized variable 102 mdate 10 May 2006 103 who mrg 104 file bin/ksh/eval.c : 1.6 105 file bin/sh/histedit.c : 1.39 106 file bin/sh/parser.c : 1.60 107 file crypto/dist/heimdal/kdc/524.c : 1.10 108 file crypto/dist/ssh/sftp.c : 1.20 109 file crypto/dist/ssh/ssh-keysign.c : 1.11 110 file dist/ipf/lib/hostname.c : 1.2 111 file dist/ipf/tools/ipmon.c : 1.8 112 file dist/ntp/ntpd/ntp_request.c : 1.4 113 file dist/ntp/ntpd/refclock_shm.c : 1.4 114 file dist/ntp/sntp/timing.c : 1.3 115 file dist/pppd/pppstats/pppstats.c : 1.3 116 file dist/smbfs/lib/smb/rap.c : 1.6 117 file dist/tcpdump/print-zephyr.c : 1.5 118 file distrib/utils/sysinst/aout2elf.c : 1.12 119 file gnu/libexec/uucp/uucico/uucico.c : 1.6 120 file lib/libc/citrus/citrus_csmapper.c : 1.6 121 file lib/libc/citrus/citrus_pivot_factory.c : 1.5 122 file lib/libc/inet/inet_cidr_ntop.c : 1.3 123 file lib/libc/inet/inet_ntop.c : 1.3 124 file lib/libc/stdio/vfwprintf.c : 1.8 125 file libexec/ld.elf_so/arch/m68k/mdreloc.c : 1.20 126 file libexec/ld.elf_so/arch/powerpc/ppc_reloc.c : 1.40 127 file libexec/ld.elf_so/arch/sh3/mdreloc.c : 1.22 128 file libexec/ld.elf_so/arch/sparc/mdreloc.c : 1.39 129 file libexec/ld.elf_so/arch/sparc64/mdreloc.c : 1.39 130 file libexec/ld.elf_so/arch/vax/mdreloc.c : 1.21 131 file libexec/ld.elf_so/arch/x86_64/mdreloc.c : 1.27 132 file sbin/fsck_ext2fs/dir.c : 1.19 133 file sbin/routed/rtquery/rtquery.c : 1.18 134 file sys/arch/amd64/amd64/pmap.c : 1.26 135 file sys/arch/i386/pci/piixpcib.c : 1.4 136 file sys/arch/m68k/m68k/pmap_motorola.c : 1.4 137 file sys/crypto/cast128/cast128.c : 1.9 138 file sys/ddb/db_command.c : 1.86 139 file sys/dev/cardbus/cardbus_map.c : 1.21 140 file sys/dev/fss.c : 1.25 141 file sys/dev/ic/igsfb.c : 1.39 142 file sys/dev/ic/mb86950.c : 1.5 143 file sys/dev/ic/midway.c : 1.71 144 file sys/dev/kttcp.c : 1.18 145 file sys/dev/rasops/rasops_bitops.h : 1.9 146 file sys/dev/pci/cmpci.c : 1.31 147 file sys/dev/pci/machfb.c : 1.45 148 file sys/dev/usb/ohci.c : 1.174 149 file sys/dev/usb/uhci.c : 1.196 150 file sys/dev/rasops/rasops_bitops.h : 1.9 151 file sys/dist/ipf/netinet/ip_nat.c : 1.10 152 file sys/dist/ipf/netinet/ip_rpcb_pxy.c : 1.8 153 file sys/dist/pf/net/pf.c : 1.22 154 file sys/fs/udf/udf_vnops.c : 1.4 155 file sys/kern/kern_sig.c : 1.219 156 file sys/kern/tty.c : 1.181 157 file sys/net/bpf.c : 1.116 158 file sys/net/zlib.c : 1.26 159 file sys/netccitt/if_x25subr.c : 1.37 160 file sys/netinet/in.c : 1.107 161 file sys/netsmb/smb_smb.c : 1.27 162 file sys/netsmb/smb_trantcp.c : 1.22 163 file sys/nfs/nfs_serv.c : 1.108 164 file sys/nfs/nfs_socket.c : 1.129 165 file sys/nfs/nfs_syscalls.c : 1.91 166 file sys/ufs/lfs/lfs_vfsops.c : 1.207 [also (char *)] 167 file usr.bin/ftp/ftp.c : 1.140 168 file usr.bin/find/function.c : 1.54 169 file usr.bin/mail/tty.c : 1.20 170 file usr.bin/msgc/msg_sys.def : 1.33-1.34 171 file usr.bin/nl/nl.c : 1.7 172 file usr.bin/systat/keyboard.c : 1.23 173 file usr.bin/usbhidctl/usbhid.c : 1.29 174 file usr.bin/vi/cl/cl_read.c : 1.5 175 file usr.bin/vi/ex/ex_cscope.c : 1.12 176 file usr.bin/vi/ex/ex_tag.c : 1.19 177 file usr.bin/vi/vi/v_txt.c : 1.15 178 file usr.sbin/altq/altqstat/qdisc_rio.c : 1.4 179 file usr.sbin/cron/do_command.c : 1.19 180 file usr.sbin/timed/timed/slave.c : 1.15 181 descr 182 GCC 4.1 gets many uninitialised variable warnings wrong. We should 183 really audit all the old hacks like this when older compilers are 184 removed from the tree, as many are probably no longer required. 185 The problem is that it does not recognize initialization via function 186 call pointer. I.e. 187 int p; 188 foo(&p); 189 does not mark p as initialized. 190 kcah 191 192 hack gcc4 pointer sign and strict aliasing problems 193 mdate 10 May 2006 194 who mrg 195 file bin/ed/Makefile : 1.33 196 file distrib/utils/sysinst/Makefile.inc : 1.44 197 file distrib/utils/x_dhclient/Makefile : 1.15 198 file games/bcd/Makefile : 1.5 199 file games/dab/Makefile : 1.5 200 file games/larn/Makefile : 1.17 201 file games/pom/Makefile : 1.5 202 file lib/libasn1/Makefile : 1.26 203 file lib/libcrypt/Makefile : 1.17 204 file lib/libgssapi/Makefile : 1.16 205 file lib/libhdb/Makefile : 1.20 206 file lib/libkadm5clnt/Makefile : 1.21 207 file lib/libkadm5srv/Makefile : 1.25 208 file lib/libkrb5/Makefile : 1.35 209 file lib/libssh/Makefile : 1.6 210 file lib/libtelnet/Makefile : 1.26 211 file libexec/getty/Makefile : 1.14 212 file libexec/kadmind/Makefile : 1.19 213 file libexec/kpasswdd/Makefile : 1.14 214 file sbin/atactl/Makefile : 1.3 215 file sbin/cgdconfig/Makefile : 1.7 216 file sbin/clri/Makefile : 1.13 217 file sbin/dkctl/Makefile : 1.4 218 file sbin/dump/Makefile : 1.33 219 file sbin/fdisk/Makefile : 1.35 220 file sbin/fsck_ext2fs/Makefile : 1.11 221 file sbin/fsck_ffs/Makefile : 1.29 222 file sbin/fsdb/Makefile : 1.18 223 file sbin/mount_smbfs/Makefile : 1.4 224 file sbin/newfs/Makefile : 1.30 225 file sbin/newfs_sysvbfs/Makefile : 1.2 226 file sbin/restore/Makefile : 1.23 227 file sbin/veriexecctl/Makefile : 1.11 228 file sys/lib/libsa/Makefile : 1.59 229 file sys/arch/evbarm/adi_brh/brh_machdep.c : 1.24 230 file usr.bin/awk/Makefile : 1.9 231 file usr.bin/crontab/Makefile : 1.24 232 file usr.bin/ctags/Makefile : 1.8 233 file usr.bin/gzip/Makefile : 1.10 234 file usr.bin/ssh/sftp/Makefile : 1.10 235 file usr.bin/ssh/ssh/Makefile : 1.25 236 file usr.bin/vi/build/Makefile : 1.26 237 file usr.bin/telnet/Makefile : 1.40 238 file usr.bin/tn3270/tn3270/Makefile : 1.36 239 file usr.bin/tr/Makefile : 1.4 240 file usr.sbin/amd/amd/Makefile : 1.27 241 file usr.sbin/amd/amq/Makefile : 1.14 242 file usr.sbin/amd/libamu/Makefile : 1.20 243 file usr.sbin/amd/pawd/Makefile : 1.5 244 file usr.sbin/bind/Makefile.inc : 1.22 245 file usr.sbin/bind/libdns/Makefile : 1.3 246 file usr.sbin/bind/named/Makefile : 1.17 247 file usr.sbin/bootp/bootptest/Makefile : 1.2 248 file usr.sbin/chrtbl/Makefile : 1.6 249 file usr.sbin/cron/Makefile : 1.12 250 file usr.sbin/dhcp/Makefile.inc : 1.20 251 file usr.sbin/dumplfs/Makefile : 1.11 252 file usr.sbin/hprop/Makefile : 1.13 253 file usr.sbin/installboot/Makefile : 1.35 254 file usr.sbin/ipf/ipftest/Makefile : 1.32 255 file usr.sbin/isdn/isdnd/Makefile : 1.6 256 file usr.sbin/isdn/isdnmonitor/Makefile : 1.3 257 file usr.sbin/isdn/isdntel/Makefile : 1.2 258 file usr.sbin/isdn/isdntrace/Makefile : 126 259 file usr.sbin/mopd/common/Makefile : 1.10 260 file usr.sbin/mopd/mopd/Makefile : 1.9 261 file usr.sbin/mopd/mopprobe/Makefile : 1.7 262 file usr.sbin/makefs/Makefile : 1.17 263 file usr.sbin/mscdlabel/Makefile : 1.5 264 file usr.sbin/pkg_install/add/Makefile : 1.7 265 file usr.sbin/pkg_install/create/Makefile : 1.5 266 file usr.sbin/pkg_install/lib/Makefile : 1.28 267 file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11 268 file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5 269 file usr.sbin/pppd/Makefile.inc : 1.3 270 file usr.sbin/pppd/pppd/Makefile : 1.38 271 file usr.sbin/rarpd/Makefile : 1.10 272 file usr.sbin/rbootd/Makefile : 1.10 273 file usr.sbin/rpc.pcnfsd/Makefile : 1.17 274 file usr.sbin/rtadvd/Makefile : 1.9 275 file usr.sbin/tcpdump/Makefile : 1.42 276 file usr.sbin/wiconfig/Makefile : 1.3 277 descr 278 GCC 4.1 warns on pointer sign comparision/assignments and lots of 279 code does not conform. For now we use -Wno-pointer-sign and 280 -fno-strict-aliasing. 281 kcah 282 283 hack disable ctf for gcc-4.8 build 284 mdate April 3 2014 285 who chritos 286 file external/gpl3/gcc/usr.bin/Makefile.frontend : 1.4 287 file external/gpl3/gcc/usr.bin/Makefile.backend : 1.5 288 descr 289 nbctfconvert -g -L VERSION -g fold-const.o 290 ERROR: fold-const.c: failed to get mapping for tid 79154 \ 291 ((null)) <13532> 292 kcak 293 294 hack emacs aborting on exit (libgcc issue) 295 mdate 7 November 2011 296 who christos 297 file external/gpl3/gcc/dist/gcc/unwind-dw2-fde.c : 1.2 298 descr 299 GCC 4.5.3 now calls __unregister_frame_info_bases() on unloading/exit 300 to do just that. If the symbol requested is not found, then it aborts. 301 emacs 23.3 triggers this assertion. For now disable aborting, and 302 silently ignore. 303 kcah 304 305 hack cross-building hack on Darwin 306 mdate 20 July 2008 307 who agc 308 file src/distrib/common/Makefile.mdset : 1.33 309 descr 310 Darwin has problems with getopt() when used in mdsetimage -v, 311 due to the difference between BSD and libiberty() getopt 312 implementations, more fully described in 313 http://mail-index.netbsd.org/current-users/2008/06/27/msg003242.html 314 and the subsequent thread. For just now, we just have an ugly 315 workaround not to call mdsetimage with the -v argument on Darwin 316 kcah 317 318 hack avoid rebuilding asn1 libraries 319 mdate 03 August 2008 320 who veego 321 file src/crypto/dist/heimdal/lib/asn1/gen.c : 1.10 322 file src/lib/libasn1/Makefile : 1.32 323 file src/lib/libhdb/Makefile : 1.23 324 file src/lib/libgssapi/Makefile : 1.20 325 file src/lib/libhx509/Makefile : 1.3 326 pr 9702 39185 327 descr 328 asn1_compile does not check if generated header files do not have to 329 be rebuild. 330 Generate .hx files and copy it in the Makefiles if they changed. 331 kcah 332 333 hack avoid gcc4 -O1 bug in loop optimize 334 cdate 29 November 2008 335 who tsutsui 336 file src/sbin/ifconfig/Makefile : 1.39 337 pr 40036 40066 338 descr 339 gcc -O1 seems to generate wrong code in loop optimize so that 340 ifconfig lo0 inet6 doesn't return error even if a kernel 341 doesn't have IPv6 support. (see the above PRs for details) 342 For workaround, specify -fno-loop-optimize on m68000, 343 which uses -O1 by default. 344 kcah 345 346 hack MKPIE ldscript for /usr.sbin/crash 347 cdate 22 April 2010 348 who christos 349 file src/usr.sbin/crash/Makefile : 1.5 350 file src/usr.sbin/crash/ldscript.crash : 1.1 351 pr N/A 352 descr 353 fixed in binutils-2.20.1. Linking with MKPIE=yes causes overlapping 354 sections 355 kcah 356 357 hack Disable fortification for /usr/bin/makeinfo 358 cdata 24 Mar 2014 359 who tron 360 file src/gnu/usr.bin/texinfo/makeinfo/Makefile : 1.8 361 pr N/A 362 descr 363 If "makeinfo" is compiled with "-D_FORTIFY_SOURCE=2" using GCC 4.8.3 364 it fails to process certain texinfo files, e.g. "cl.texi" 365 included in the Emacs 24.3 distribution. 366 kcah 367 368 port vax 369 370 hack gcc4/vax ICE 371 cdate 372 who tsutsui 373 file sys/arch/vax/conf/Makefile.vax 374 descr 375 GCC4 on vax gets ICE on compiling sys/ddb/db_command.c. 376 -fno-tree-ter prevents it so add it to COPTS. 377 kcah 378 379 hack gcc4/vax compiler crash 380 cdate Fri Jun 30 22:39:12 PDT 2006 381 who mrg 382 file bin/csh/Makefile : 1.27 383 file lib/i18n_module/UTF7/Makefile : 1.2 384 descr 385 GCC4 on vax crashes. -O0 stops it happening so far... 386 kcah 387 388 hack gcc 2.95/vax doesn't like abort being used as function pointer 389 cdate Tue Dec 13 05:54:50 GMT 2005 390 who jmc 391 file lib/libc/rpc/svc_vc.c 1.15 392 descr 393 Provide a local definition for abort which doesn't include 394 the noreturn attribute which trips up gcc 2.95 on vax. 395 kcah 396 397 hack gcc 2.95/vax doesn't have stdbool.h and gettext needs it 398 cdate Mon May 9 12:16:22 CDT 2005 399 who jmc 400 file gnu/usr.bin/gettext/Makefile.inc.prog 1.5 401 gnu/usr.bin/gettext/libgrep/Makefile 1.3 402 gnu/usr.bin/gettext/libnlspr/Makefile 1.5 403 gnu/usr.bin/gettext/libnlsut/Makefile 1.3 404 descr 405 The latest gettext assumes a C99 environment or at least 406 configure checks to work around this. As we don't use configure 407 provide a stdbool.h for vax builds locally in directories from 408 the template provided by the gettext code. 409 kcah 410 411 hack gcc 2.95/vax cannot handle __builtin_ffs() 412 cdate Fri Aug 23 21:31:15 CEST 2002 413 who ragge 414 file sys/lib/libkern/libkern.h : 1.42 415 descr 416 __builtin_ffs() is ifdef'd away if __vax__. Matt Thomas has 417 added this feature to GCC 3 so it can be removed when switching. 418 kcah 419 420 hack gcc 2.95/vax libbz2 421 mdate 27 Jun 2002 422 who thorpej 423 file lib/libbz2/Makefile 424 descr 425 libbz2 is mis-compiled with optimization with GCC 2.95.3 426 on VAX. -O0 works around this problem. 427 kcah 428 429 hack vax Toolchain bug 430 cdate 28 Mar 2003 431 who he 432 file sys/arch/vax/vax/intvec.S : 1.5 433 descr 434 Workaround for PR toolchain/20924. The assembler apparently 435 tries to range-check byte offsets when it doesn't have 436 sufficient information to make that decision. 437 Workaround uses `brw' instead of `brb' instruction. 438 kcah 439 440 hack vax gcc 2.95.3 -Wuninitialized workarounds 441 cdate 6 Nov 2003 442 who he 443 file sys/dev/bi/if_ni.c : 1.22 444 file sys/arch/vax/vax/ctu.c : 1.20 445 descr 446 Workaround for gcc 2.95.3 failing to detect that certain 447 variables will be initialized; so that this code compiles 448 with -Wuninitialized. Should be reviewed and possibly 449 reverted when gcc 3.3.2 is ready for vax. 450 kcah 451 452 hack vax gcc 2.95.3 structure initialization 453 cdat 13 May 2004 454 who cl 455 file sys/miscfs/kernfs/kernfs_vnops.c : 1.104 456 descr 457 Workaround for gcc 2.95.3 failing to initialize structures 458 and/or unions inside structures using nested designators. 459 Should be reverted when gcc >=3.3.3 is ready for vax. 460 kcah 461 462 hack vax gcc 2.95.3 needs -I. to build nslexer.c 463 cdat 6 Jun 2004 464 who mhitch 465 file lib/libc/arch/vax/Makefile.inc : 1.6 466 descr 467 It appears necessary to add -I. to CPPFLAGS when building 468 nslesxer.c. This may be caused by gcc 2.95.3 being used. 469 Should be reverted when a newer gcc is ready for vax. 470 kcah 471 472 hack vax gcc 2.95.3 doesn't understand "-std=c99" 473 cdat 5 April 2005 474 who tron 475 file src/share/mk/bsd.sys.mk 476 descr 477 We cannot use "-std=c99" for compiler warning level 4 and above 478 because gcc 2.95.3 doesn't support that option. 479 kcah 480 481 hack declare boolean_t in two IPF user-mode programs 482 cdate Tue Mar 7 19:19:20 CET 2006 483 who he 484 file dist/ipf/ipsend/iptests.c : 1.8 485 dist/ipf/ipsend/sock.c : 1.7 486 descr 487 The IPF user-mode programs ipsend and iptest first 488 include <sys/types.h> without _KERNEL defined, and 489 later include <sys/file.h> with _KERNEL defined. 490 This causes a build failure when building for vax, 491 since <sys/device.h> ends up being included without 492 bollean_t being defined by <sys/types.h>. 493 Build failure and further details documented in 494 PR#32907. 495 kcah 496 497 hack pcc 0.9.9 large string literals 498 cdat 8 July 2008 499 who gmcgarry 500 file sys/conf/param.c : 1.58 501 descr 502 Workaround for pcc 0.9.9 not handling large string literals 503 which causes kernels with 'options INCLUDE_CONFIG_FILE' to 504 fail compilation. 505 There is a proposal on the pcc mailing list to stuff config 506 file in ELF section. 507 kcah 508 509 hack xorg warnings 510 cdat 30 July 2008, 3 June, 2013 511 who mrg 512 file external/mit/xorg/lib/libSM/Makefile : 1.2 513 external/mit/xorg/lib/libX11/Makefile.libx11 : 1.10 514 external/mit/xorg/lib/libXext/Makefile : 1.2 515 external/mit/xorg/lib/libXfont/Makefile : 1.2 516 descr 517 Disable several warnings or use -Wno-error across Xorg sources 518 while we get them working 519 kcah 520 521 hack 32 bit time leftovers 522 cdat 11 January 2009 523 who christos 524 file lib/libc/time/localtime.c : 1.41 525 lib/libc/time/zic.c : 1.23 526 descr 527 The timezone compiled files still contain 32 bit time_t 528 quantities. I did not want to version the files because 529 the ``parser'' is too ugly for words. What needs to be 530 done, is to rewrite the parser from scratch also to avoid 531 potential core-dumps from parsing invalid files. 532 kcah 533 534 hack 32 bit time leftovers 535 cdat 11 January 2009 536 who christos 537 file various 538 descr 539 Many filesystem on-disk formats have 32 bit times. 540 kcah 541 542 hack gcc 4.5 fsdb miscompile 543 date Sat Nov 9 11:03:02 EST 2013 544 who christos 545 file src/sbin/fsdb/Makefile : 1.36 (and earlier) 546 descr 547 src/sbin/fsdb/fsdb.c: In function 'findblk': 548 src/sbin/fsdb/fsdb.c:610:1: error: unrecognizable insn: 549 (insn 941 940 942 134 src/sbin/fsdb/fsdb.c:589 (set (reg:SI 604) 550 (subreg:SI (mem/s/j:DI (plus:SI (mult:SI (reg:SI 602) 551 (const_int 8 [0x8])) 552 (reg/f:SI 601)) [0 curinode.99_378->dp2.di_ib S8 A32]) 4)) \ 553 -1 (nil)) 554 src/sbin/fsdb/fsdb.c:610:1: internal compiler error: in \ 555 extract_insn, at recog.c:2103 556 kcah 557 558 hack gcc 4.8 gcc miscompiles 559 date Sat Nov 9 16:35:18 EST 2013 560 who christos 561 file distrib/utils/x_ping/Makefile 562 file distrib/vax/miniroot/Makefile.inc 563 file distrib/vax/ramdisk/Makefile 564 file external/gpl3/gdb/lib/libdecnumber/Makefile 565 file sbin/fsdb/Makefile 566 file sbin/newfs_ext2fs/Makefile 567 file sbin/ping/Makefile 568 file usr.sbin/lmcconfig/Makefile 569 file usr.sbin/mtrace/Makefile 570 descr 571 external/gpl3/gcc/dist/gcc/expmed.c:2781:1: 572 internal compiler error: in change_address_1, at emit-rtl.c:2019 573 external/gpl3/gcc/dist/gcc/recog.c:770:1: 574 internal compiler error: in change_address_1, at emit-rtl.c:2019 575 external/gpl3/gcc/dist/libdecnumber/decNumber.c:7214:3: 576 internal compiler error: in change_address_1, at emit-rtl.c:2019 577 sbin/ping/ping.c:679:1: 578 internal compiler error: in change_address_1, at emit-rtl.c:2019 579 sbin/newfs_ext2fs/mke2fs.c:681:1: 580 internal compiler error: in reload_combine_note_use, 581 at postreload.c:1561 582 external/gpl3/gdb/dist/libdecnumber/decNumber.c:7214:3: 583 internal compiler error: in change_address_1, at emit-rtl.c:2019 584 usr.sbin/lmcconfig/lmcconfig.c:939:3: 585 internal compiler error: in reload_combine_note_use, 586 at postreload.c:1561 587 usr.sbin/mtrace/mtrace.c:1655:1: 588 internal compiler error: in change_address_1, at emit-rtl.c:2019 589 kcah 590 591 port arm 592 593 hack gcc-unsigned-compare 594 cdate 09 Mar 2002 595 mdate 18 Mar 2002 596 who bjh21 597 file dist/bind/lib/nameser/ns_parse.c : 1.3 598 file dist/dhcp/minires/ns_parse.c : 1.3 599 file dist/dhcp/omapip/result.c : 1.2 600 file dist/dhcp/server/failover.c : 1.3 601 file gnu/dist/toolchain/bfd/bfd.c : 1.2 602 file gnu/dist/toolchain/bfd/format.c : 1.2 603 file gnu/dist/toolchain/gdb/target.c : 1.2 604 file sys/kern/vfs_subr.c : 1.172 605 descr When checking that a potentially-unsigned enum is >= 0, assign 606 it to an int first. This is necessary to avoid "comparison is 607 always true" warnings with -fshort-enums. Casting to an int 608 really should be enough, but turns out not to be. 609 kcah 610 611 hack gcc-4.5 arm CNAME hostname lookup failure on 612 certain DNS environment (probably -ftree-ter problem) 613 cdate Sat Dec 24 04:59:00 UTC 2011 614 mdate 615 who tsutsui 616 file lib/libc/net/Makefile.inc 1.79 617 descr Hostname lookup against CNAMEs by some commands fails 618 on certain DNS environments if lib/libc/net/gethnamaddr.c 619 (ping(8) etc) and lib/libc/net/getaddrinfo.c (ftp(1) etc) 620 are compiled with -O2, even though nslookup(1) against 621 the same CNAME returns proper hostname. 622 They works properly if compiled with -O2 -fno-tree-ter. 623 Also -O2 fails but -O2 -fno-tree-ter works on the following 624 test case in gcc bugzilla: 625 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48863#c4 626 kcah 627 628 hack gcc-4.5 arm without -fno-tree-vrp generate broken code 629 cdate Wed Nov 14 13:02:02 JST 2012 630 who msaitoh 631 file lib/libc/softfloat/Makefile.inc 632 pr 46953 633 regress src/tests/lib/libm/t_cbrt 634 regress src/tests/lib/libm/t_ceil 635 regress src/tests/lib/libm/t_exp 636 regress src/tests/lib/libm/t_log 637 regress src/tests/lib/libm/t_scalbn 638 regress src/tests/lib/libm/t_sinh 639 regress src/tests/lib/libm/t_sqrt 640 descr Gcc has a bug in tree optimization. For adddf3, 641 -INF + -INF returns 0 without -fno-tree-vrp. 642 Debugging with -fdump-tree-all shows that 643 softfloat.c.021t.cleanup_cfg is ok but softfloat.c.023t.ssa 644 is broken. 645 kcah 646 647 port sh3 648 649 hack gcc4-sh3-bz2 650 cdate Sun May 21 03:34:57 UTC 2006 651 mdate Fri May 16 13:13:00 UTC 2008 652 who mrg, tsutsui 653 file lib/libbz2/Makefile : 1.10 654 descr 655 The in-tree GCC 4.1-based compiler generated too-far 656 pc-relative addresses. Hack is to build with 657 -fno-loop-optimize. 658 kcah 659 660 port sh3eb 661 hack gcc4.8.1 662 cdate Thu Nov 7 16:31:23 EST 2013 663 who christos 664 file src/sys/rump/net/lib/libnetbt/Makefile : 1.2 665 desrc 666 for profiling 667 compile l2cap_signal.c with -O0 to avoid: 668 ./netbt/l2cap_signal.c:36: 669 /p/netbsd/cvsroot/src/sys/rump/net/lib/libnetbt/../../../../\ 670 netbt/l2cap_signal.c: In function 'l2cap_recv_signal': 671 ./sh3/byte_swap.h:20:2: error: 'asm' operand requires \ 672 impossible reload 673 __asm volatile ("swap.b %1,%0" : "=r"(rval) : "r"(x)); 674 kcah 675 676 port sh3el 677 hack gcc4.8.1 678 cdate Fri Nov 8 19:27:01 EST 2013 679 who christos 680 file src/external/bsd/libevent/lib/libevent/Makefile : 1.2 681 desrc 682 for profiling 683 compile evdns.c with -O0 to avoid: 684 ./sh3/byte_swap.h:20:2: error: 'asm' operand requires \ 685 impossible reload 686 __asm volatile ("swap.b %1,%0" : "=r"(rval) : "r"(x)); 687 kcah 688 689 hack gcc4.8.1 690 cdate Fri Nov 8 19:34:48 EST 2013 691 who christos 692 file src/usr.sbin/racoon/Makefile : 1.27 693 desrc 694 for profiling 695 compile ipsec_doi.c with -O0 to avoid: 696 ./sh3/byte_swap.h:20:2: error: 'asm' operand requires \ 697 impossible reload 698 __asm volatile ("swap.b %1,%0" : "=r"(rval) : "r"(x)); 699 kcah 700 701 port m68000 702 703 hack gcc4-m68000 704 cdate Fri Feb 8 10:29:37 PST 2008 705 mdate Sun May 4 15:37:19 UTC 2008 706 who mrg, tsutsui 707 file rescue/Makefile : 1.21 708 file sbin/dump_lfs/Makefile : 1.9 709 file sbin/fsck_ffs/Makefile : 1.35 710 file sbin/fsdb/Makefile : 1.22 711 file share/mk/sys.mk : 1.96 712 file usr.sbin/ndbootd/Makefile : 1.5 713 descr 714 Several internal compiler errors with gcc -O1 715 around 64bit integer arithmetic. 716 This hack uses -O1 and adds some -fno-tree-foo options 717 to avoid the problem. 718 This might be related with GCC Bugzilla Bug 32424. 719 kcah 720 721 port m68k,sh3,vax 722 723 hack gcc-4.8.1 724 cdate Wed Nov 6 20:41:35 EST 2013 725 who christos 726 file src/external/gpl3/gcc/libstdc++-v3/Makefile : 1.6 727 descr 728 compile hashtable_c++0x.cc with -O2 instead of -Os to 729 produce missing instantiation of std::lower_bound expansion 730 for unsigned long. 731 kcah 732 733 port sparc 734 735 hack avoid NULL pointer derefs in savefpstate IPIs and GCC 4.5.3 736 cdate Sun Aug 14 19:26:48 PDT 2011 737 who mrg 738 file sys/arch/sparc64/sparc/cpu.c : 1.234 739 file sys/arch/sparc64/sparc/cpuvar.h : 1.90 740 file sys/arch/sparc64/sparc/genassym.cf : 1.67 741 file sys/arch/sparc64/sparc/locore.s : 1.265 742 descr 743 Something is wrong with GCC 4.5.3 and the savefpstate IPI. 744 Post newlock2 there was a bug where a lock was reduced from 745 IPL_SCHED to IPL_VM (?) and occasionally savefpstate IPI 746 would crash due to NULL IPI. This was fixed by re-using the 747 right IPL value. However, GCC 4.5.3 build kernels have the 748 same problems. For now, the hack is re-instated. 749 kcah 750 751 752 port mips 753 754 hack mips-shared-linker-load-address 755 cdate Fri Oct 7 08:33:10 UTC 2005 756 who simonb 757 file src/sys/kern/exec_elf32.c : 1.107 758 descr 759 With COMPAT_16 or previous enabled (which enables 760 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 761 load and run at address 0. The check to fix this in 762 rev 1.107 only checks the first psection of the ELF 763 executable, which may not be loadable. A more correct 764 fix is to check the first loadable psection instead of 765 just the first psection. 766 kcah 767 768 hack mips-duplicate-ras-end-label 769 cdate Sat Sep 2 23:29:42 2006 770 who martin 771 file src/regress/sys/kern/ras/ras3/Makefile : 1.3 772 descr 773 Add -fno-reorder-blocks to CFLAGS to avoid duplicate 774 labels by duplicated __asm output from RAS_END() 775 macro. 776 kcah 777 778 hack mips-mcount-assembler-warning 779 cdate Tue Jul 29 14:16:52 UTC 2008 780 who lukem 781 file src/lib/libc/gmon/Makefile.inc : 1.8 782 descr 783 Workaround for PR port-mips/39192. 784 common/lib/libc/gmon/mcount.c generates a (fatal) 785 assembler warning on MIPS: 786 Warning: No .cprestore pseudo-op used in PIC code 787 Add COPTS.count.c+=-Wa,--no-warn to avoid -Wa,--fatal-warnings 788 kcah 789 790 port i386 791 792 hack use volatile intermediate variable to enforce rounding 793 cdate Tue Aug 1 22:15:55 MEST 2006 794 who drochner 795 file src/lib/libm/src/lrintf.c : 1.4 796 file src/lib/libm/src/s_rintf.c : 1.8 797 descr 798 gcc-4 does subsequent operations on "float" values within 799 the i387 FPU without rounding the intermediate results 800 kcah 801 802 port powerpc 803 804 hack avoid using __builtin_return_address(0) because it fails in 805 Xorg's module loader 806 cdate Sat Sep 27 03:52:05 UTC 2008 807 who macallan 808 file src/libexec/ld.elf_so/rtld.c : 1.121 809 descr 810 workaround for PR port-macppc/37812 811 kcah 812 813 hack define TARGET_SECURE_PLT and HAVE_AS_TLS because when 814 building the native compiler via build.sh those don't defined 815 properly. 816 cdate Sat Mar 12 08:00:00 UTC 2011 817 who matt 818 file src/gnu/dist/gcc4/gcc/config/rs6000/netbsd.h 819 descr 820 see above 821 kcah 822 823 port powerpc64 824 825 hack include _errno.c in libposix so that __errno resolves. It 826 should resolve from libc's errno, but somehow it does not. 827 Linker bug? 828 cdate Thu Oct 27 13:19:47 EDT 2011 829 who christos 830 file src/lib/libposix/Makefile: 1.15 831 file src/lib/librt/Makefile: 1.14 832 descr 833 workaround for: 834 libposix_pic.a(cerror.pico)(.text+0x14): unresolvable \ 835 R_PPC64_REL24 relocation against symbol `.__errno' 836 kcah 837 838 hack rename data() function in mdocml to avoid redefined error. 839 Compiler/Assembler bug? 840 cdate Sat Oct 29 11:16:01 EDT 2011 841 who christos 842 file src/external/bsd/mdocml/tbl_data.c: 1.2 843 descr 844 workaround for: 845 {standard input}: Assembler messages: 846 {standard input}:105: Error: symbol `.data' is already \ 847 defined 848 kcah 849 850 port emips 851 852 hack Add nop between ctc1 and mtc0 to avoid assembler internal 853 error 854 cdate Sat Oct 29 16:57:34 EDT 2011 855 who christos 856 file src/sys/arch/mips/mips/mips_fpu.c: 1.7 857 descr 858 workaround for: 859 {standard input}: Assembler messages: 860 {standard input}:730: Internal error! 861 Assertion failure in append_insn at /usr/src/external/gpl3/\ 862 binutils/dist/gas/config/tc-mips.c line 2910. 863 kcah 864 865 port ia64 866 867 hack libc hesiod.c file does not compile with -O2 (internal 868 compiler error in gcc 4.5.3) 869 cdate Thu Dec 27 08:05:43 CET 2012 870 who martin 871 file src/lib/libc/net/Makefile.inc: 1.82 872 descr 873 workaround for: 874 {standard input}: Assembler messages: 875 {standard input}:1507: Warning: Use of 'mov' may violate WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 15 876 {standard input}:1506: Warning: This is the location of the conflicting usage 877 {standard input}: Error: 2 warnings, treating warnings as errors 878 kcah 879 880 hack libelf libelf_extended.c compiler error in gcc 4.5.3 881 cdate Thu Dec 27 09:05:51 CET 2012 882 who martin 883 file src/external/bsd/libelf/lib/Makefile: 1.3 884 descr 885 workaround for: 886 {standard input}: Assembler messages: 887 {standard input}:87: Warning: Use of 'adds' may violate RAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 33 888 {standard input}:87: Warning: Only the first path encountering the conflict is reported 889 {standard input}:85: Warning: This is the location of the conflicting usage 890 kcah 891 892 hack compiler error with gcc 4.5.x 893 cdate Thu Dec 27 15:15:25 CET 2012 894 who martin 895 file src/crypto/external/bsd/netpgp/lib/verify/Makefile: 1.5 896 descr 897 workaround for: 898 {standard input}: Assembler messages: 899 {standard input}:22979: Warning: Use of 'mov' may violate WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 8 900 {standard input}:22978: Warning: This is the location of the conflicting usage 901 kcah 902 903 port x68k 904 905 hack compiler error with gcc 4.5.x 906 cdate Fri May 24 13:23:01 EDT 2013 907 who christos 908 file src/external/gpl3/gcc/usr.bin/bakend/Makefile: 1.17 909 xsrc/external/mit/xorg/lib/libGLU/Makefile: 1.11 910 src/x11/lib/GLU/Makefile: 1.9 911 descr 912 workaround for: 913 internal compiler error: in cselib_record_set, at cselib.c:1999 914 kcah 915 916 hack fallback to /usr/bin/clang-cpp in rpcgen 917 cdate Wed Jun 5 15:49:27 CEST 2013 918 who joerg 919 file src/usr.bin/rpcgen/rpc_main.c 920 descr 921 It is undecided which compiler owns /usr/bin/cpp and whether it should 922 exist in a MKGCC=no world. To allow rpcgen to work out-of-the-box, 923 if either gcc or clang is installed, use /usr/bin/clang-cpp as fallback. 924 This applies only if RPCGEN_CPP is not set and /usr/bin/cpp is not executable. 925 kcah 926 927 port hp700 928 929 hack compiler error with gcc 4.5.x 930 cdate Tue Jul 23 07:42:28 BST 2013 931 who skrll 932 file src/sys/lib/libkern/Makefile.libkern: 1.26 933 descr 934 workaround for unanalysed codegen bug affecting md5c.c. 935 kcah 936
Indexes created Wed Nov 05 19:10:08 GMT 2025