HACKS revision 1.196
1 # $NetBSD: HACKS,v 1.196 2019/11/03 07:10:42 rin 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 static linking with libpthread 31 mdate 7 May 2019 32 who maya 33 file lib/libpthread/Makefile 1.92 -> 1.94 34 descr 35 To avoid some libc thread stub functions being picked up 36 in static builds, link pthread as one section. 37 kcah 38 39 hack gcc-5.3 optimizes memset+malloc -> calloc inside calloc 40 mdate 4 May 2016 41 who christos 42 file external/gpl2/lib/libmalloc/lib/Makefile 1.3 -> 1.5 43 descr 44 resulting in infinite recursion; we prevent this with 45 -fno-builtin-malloc 46 kcah 47 48 hack turn off tree-vrp for parts of ufs_lookup.c 49 mdate 28 April 2016 50 who mrg christos 51 file src/sys/ufs/ufs/ufs_lookup.c : 1.144 52 pr 51094 53 descr 54 with -ftree-vrp enabled in ufs_lookup.c sometimes bad dir 55 panicks are see. 56 hcah 57 58 hack netstat ieee1394 address printing. 59 mdate 14 Nov 2000 60 who matt 61 file lib/libc/net/getnameinfo.c : 1.32 : 497 : 503 62 descr 63 Because the current implementation of IP over IEEE1394, the 64 fw device address contains more than just the IEEE1394 EUI-64. 65 So when printing out IEEE1394 addresses, ignore the extra stuff. 66 kcah 67 68 hack xterm vs. libterm 69 mdate 01 Aug 2000 70 who jdc 71 file xsrc/xc/programs/xterm/main.c : 1.2 : 3609 : 3614 72 pr 10383 73 descr 74 In order to extend the termcap string over 1023 bytes, a ZZ entry was 75 introduced to point to a memory location containing the full entry. 76 Without this hack, xterm will export a termcap containing the ZZ 77 entry, which will then be ignored by libterm. As xterm modifies the 78 exported termcap, this would cause those modifications to be ignored. 79 kcah 80 81 hack wi-at-big-endian-bus 82 cdate 15 Mar 2002 83 who martin 84 file dev/ic/wireg.h 85 descr Add an option to access the underlying bus in big endian byte order 86 to work around deficiencies in bus_space_{read,write}_* macros. 87 Those don't allow the implementation of a proper pcmcia bus space 88 tag. 89 kcah 90 91 hack specific knowledge of colours in curses code 92 cdate Sun Apr 6 11:05:24 BST 2003 93 who jdc 94 file lib/libcurses/color.c : r1.24 95 descr 96 Swap red/blue and yellow/cyan colours for COLOR_OTHER. 97 Fix is to enhance libtermcap to understand terminfo-style % sequences. 98 See also: 99 http://mail-index.NetBSD.org/tech-userlevel/2003/04/06/0000.html 100 kcah 101 102 hack Compensation for differing types of LINUX_USRSTACK and USRSTACK 103 cdate 21 Aug 2003 104 who he 105 file sys/miscfs/procfs/procfs_linux.c : 1.14 106 descr 107 Not all ports have LINUX_USRSTACK and/or USRSTACK defined as 108 literals/constants, but refer to variables of a type which is 109 not "unsigned long", causing compilation of procfs_linux.c to 110 fail with "makes integer from pointer without a cast". This 111 is observed on e.g. the sun3 port. Ideally the "types" for 112 symbols should be consistent across all ports. 113 kcah 114 115 hack gcc4 wrong uninitialized variable 116 mdate 10 May 2006 117 who mrg 118 file bin/ksh/eval.c : 1.6 119 file bin/sh/histedit.c : 1.39 120 file bin/sh/parser.c : 1.60 121 file crypto/dist/heimdal/kdc/524.c : 1.10 122 file crypto/dist/ssh/sftp.c : 1.20 123 file crypto/dist/ssh/ssh-keysign.c : 1.11 124 file dist/ipf/lib/hostname.c : 1.2 125 file dist/ipf/tools/ipmon.c : 1.8 126 file dist/ntp/ntpd/ntp_request.c : 1.4 127 file dist/ntp/ntpd/refclock_shm.c : 1.4 128 file dist/ntp/sntp/timing.c : 1.3 129 file dist/pppd/pppstats/pppstats.c : 1.3 130 file dist/smbfs/lib/smb/rap.c : 1.6 131 file dist/tcpdump/print-zephyr.c : 1.5 132 file distrib/utils/sysinst/aout2elf.c : 1.12 133 file gnu/libexec/uucp/uucico/uucico.c : 1.6 134 file lib/libc/citrus/citrus_csmapper.c : 1.6 135 file lib/libc/citrus/citrus_pivot_factory.c : 1.5 136 file lib/libc/inet/inet_cidr_ntop.c : 1.3 137 file lib/libc/inet/inet_ntop.c : 1.3 138 file lib/libc/stdio/vfwprintf.c : 1.8 139 file libexec/ld.elf_so/arch/m68k/mdreloc.c : 1.20 140 file libexec/ld.elf_so/arch/powerpc/ppc_reloc.c : 1.40 141 file libexec/ld.elf_so/arch/sh3/mdreloc.c : 1.22 142 file libexec/ld.elf_so/arch/sparc/mdreloc.c : 1.39 143 file libexec/ld.elf_so/arch/sparc64/mdreloc.c : 1.39 144 file libexec/ld.elf_so/arch/vax/mdreloc.c : 1.21 145 file libexec/ld.elf_so/arch/x86_64/mdreloc.c : 1.27 146 file sbin/fsck_ext2fs/dir.c : 1.19 147 file sbin/routed/rtquery/rtquery.c : 1.18 148 file sys/arch/amd64/amd64/pmap.c : 1.26 149 file sys/arch/i386/pci/piixpcib.c : 1.4 150 file sys/arch/m68k/m68k/pmap_motorola.c : 1.4 151 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 : 1.21 154 file sys/dev/fss.c : 1.25 155 file sys/dev/ic/igsfb.c : 1.39 156 file sys/dev/ic/mb86950.c : 1.5 157 file sys/dev/ic/midway.c : 1.71 158 file sys/dev/kttcp.c : 1.18 159 file sys/dev/rasops/rasops_bitops.h : 1.9 160 file sys/dev/pci/cmpci.c : 1.31 161 file sys/dev/pci/machfb.c : 1.45 162 file sys/dev/usb/ohci.c : 1.174 163 file sys/dev/usb/uhci.c : 1.196 164 file sys/dev/rasops/rasops_bitops.h : 1.9 165 file sys/dist/ipf/netinet/ip_nat.c : 1.10 166 file sys/dist/ipf/netinet/ip_rpcb_pxy.c : 1.8 167 file sys/dist/pf/net/pf.c : 1.22 168 file sys/fs/udf/udf_vnops.c : 1.4 169 file sys/kern/kern_sig.c : 1.219 170 file sys/kern/tty.c : 1.181 171 file sys/net/bpf.c : 1.116 172 file sys/net/zlib.c : 1.26 173 file sys/netccitt/if_x25subr.c : 1.37 174 file sys/netinet/in.c : 1.107 175 file sys/netsmb/smb_smb.c : 1.27 176 file sys/netsmb/smb_trantcp.c : 1.22 177 file sys/nfs/nfs_serv.c : 1.108 178 file sys/nfs/nfs_socket.c : 1.129 179 file sys/nfs/nfs_syscalls.c : 1.91 180 file sys/ufs/lfs/lfs_vfsops.c : 1.207 [also (char *)] 181 file usr.bin/ftp/ftp.c : 1.140 182 file usr.bin/find/function.c : 1.54 183 file usr.bin/mail/tty.c : 1.20 184 file usr.bin/msgc/msg_sys.def : 1.33-1.34 185 file usr.bin/nl/nl.c : 1.7 186 file usr.bin/systat/keyboard.c : 1.23 187 file usr.bin/usbhidctl/usbhid.c : 1.29 188 file usr.bin/vi/cl/cl_read.c : 1.5 189 file usr.bin/vi/ex/ex_cscope.c : 1.12 190 file usr.bin/vi/ex/ex_tag.c : 1.19 191 file usr.bin/vi/vi/v_txt.c : 1.15 192 file usr.sbin/altq/altqstat/qdisc_rio.c : 1.4 193 file usr.sbin/cron/do_command.c : 1.19 194 file usr.sbin/timed/timed/slave.c : 1.15 195 descr 196 GCC 4.1 gets many uninitialised variable warnings wrong. We should 197 really audit all the old hacks like this when older compilers are 198 removed from the tree, as many are probably no longer required. 199 The problem is that it does not recognize initialization via function 200 call pointer. I.e. 201 int p; 202 foo(&p); 203 does not mark p as initialized. 204 kcah 205 206 hack gcc4 pointer sign and strict aliasing problems 207 mdate 10 May 2006 208 who mrg 209 file bin/ed/Makefile : 1.33 210 file distrib/utils/sysinst/Makefile.inc : 1.44 211 file distrib/utils/x_dhclient/Makefile : 1.15 212 file games/bcd/Makefile : 1.5 213 file games/dab/Makefile : 1.5 214 file games/larn/Makefile : 1.17 215 file games/pom/Makefile : 1.5 216 file lib/libasn1/Makefile : 1.26 217 file lib/libcrypt/Makefile : 1.17 218 file lib/libgssapi/Makefile : 1.16 219 file lib/libhdb/Makefile : 1.20 220 file lib/libkadm5clnt/Makefile : 1.21 221 file lib/libkadm5srv/Makefile : 1.25 222 file lib/libkrb5/Makefile : 1.35 223 file lib/libssh/Makefile : 1.6 224 file lib/libtelnet/Makefile : 1.26 225 file libexec/getty/Makefile : 1.14 226 file libexec/kadmind/Makefile : 1.19 227 file libexec/kpasswdd/Makefile : 1.14 228 file sbin/atactl/Makefile : 1.3 229 file sbin/cgdconfig/Makefile : 1.7 230 file sbin/clri/Makefile : 1.13 231 file sbin/dkctl/Makefile : 1.4 232 file sbin/dump/Makefile : 1.33 233 file sbin/fdisk/Makefile : 1.35 234 file sbin/fsck_ext2fs/Makefile : 1.11 235 file sbin/fsck_ffs/Makefile : 1.29 236 file sbin/fsdb/Makefile : 1.18 237 file sbin/mount_smbfs/Makefile : 1.4 238 file sbin/newfs/Makefile : 1.30 239 file sbin/newfs_sysvbfs/Makefile : 1.2 240 file sbin/restore/Makefile : 1.23 241 file sbin/veriexecctl/Makefile : 1.11 242 file sys/lib/libsa/Makefile : 1.59 243 file sys/arch/evbarm/adi_brh/brh_machdep.c : 1.24 244 file usr.bin/awk/Makefile : 1.9 245 file usr.bin/crontab/Makefile : 1.24 246 file usr.bin/ctags/Makefile : 1.8 247 file usr.bin/gzip/Makefile : 1.10 248 file usr.bin/ssh/sftp/Makefile : 1.10 249 file usr.bin/ssh/ssh/Makefile : 1.25 250 file usr.bin/vi/build/Makefile : 1.26 251 file usr.bin/telnet/Makefile : 1.40 252 file usr.bin/tn3270/tn3270/Makefile : 1.36 253 file usr.bin/tr/Makefile : 1.4 254 file usr.sbin/amd/amd/Makefile : 1.27 255 file usr.sbin/amd/amq/Makefile : 1.14 256 file usr.sbin/amd/libamu/Makefile : 1.20 257 file usr.sbin/amd/pawd/Makefile : 1.5 258 file usr.sbin/bind/Makefile.inc : 1.22 259 file usr.sbin/bind/libdns/Makefile : 1.3 260 file usr.sbin/bind/named/Makefile : 1.17 261 file usr.sbin/bootp/bootptest/Makefile : 1.2 262 file usr.sbin/chrtbl/Makefile : 1.6 263 file usr.sbin/cron/Makefile : 1.12 264 file usr.sbin/dhcp/Makefile.inc : 1.20 265 file usr.sbin/hprop/Makefile : 1.13 266 file usr.sbin/installboot/Makefile : 1.35 267 file usr.sbin/ipf/ipftest/Makefile : 1.32 268 file usr.sbin/isdn/isdnd/Makefile : 1.6 269 file usr.sbin/isdn/isdnmonitor/Makefile : 1.3 270 file usr.sbin/isdn/isdntel/Makefile : 1.2 271 file usr.sbin/isdn/isdntrace/Makefile : 126 272 file usr.sbin/mopd/common/Makefile : 1.10 273 file usr.sbin/mopd/mopd/Makefile : 1.9 274 file usr.sbin/mopd/mopprobe/Makefile : 1.7 275 file usr.sbin/makefs/Makefile : 1.17 276 file usr.sbin/mscdlabel/Makefile : 1.5 277 file usr.sbin/pkg_install/add/Makefile : 1.7 278 file usr.sbin/pkg_install/create/Makefile : 1.5 279 file usr.sbin/pkg_install/lib/Makefile : 1.28 280 file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11 281 file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5 282 file usr.sbin/pppd/Makefile.inc : 1.3 283 file usr.sbin/pppd/pppd/Makefile : 1.38 284 file usr.sbin/rarpd/Makefile : 1.10 285 file usr.sbin/rbootd/Makefile : 1.10 286 file usr.sbin/rpc.pcnfsd/Makefile : 1.17 287 file usr.sbin/tcpdump/Makefile : 1.42 288 descr 289 GCC 4.1 warns on pointer sign comparision/assignments and lots of 290 code does not conform. For now we use -Wno-pointer-sign and 291 -fno-strict-aliasing. 292 kcah 293 294 hack disable ctf for gcc-4.8 build 295 mdate April 3 2014 296 who christos 297 file external/gpl3/gcc/usr.bin/Makefile.frontend : 1.4 298 file external/gpl3/gcc/usr.bin/Makefile.backend : 1.5 299 descr 300 nbctfconvert -g -L VERSION -g fold-const.o 301 ERROR: fold-const.c: failed to get mapping for tid 79154 \ 302 ((null)) <13532> 303 kcak 304 305 hack emacs aborting on exit (libgcc issue) 306 mdate 7 November 2011 307 who christos 308 file external/gpl3/gcc/dist/gcc/unwind-dw2-fde.c : 1.2 309 descr 310 GCC 4.5.3 now calls __unregister_frame_info_bases() on unloading/exit 311 to do just that. If the symbol requested is not found, then it aborts. 312 emacs 23.3 triggers this assertion. For now disable aborting, and 313 silently ignore. 314 kcah 315 316 hack cross-building hack on Darwin 317 mdate 20 July 2008 318 who agc 319 file src/distrib/common/Makefile.mdset : 1.33 320 descr 321 Darwin has problems with getopt() when used in mdsetimage -v, 322 due to the difference between BSD and libiberty() getopt 323 implementations, more fully described in 324 http://mail-index.netbsd.org/current-users/2008/06/27/msg003242.html 325 and the subsequent thread. For just now, we just have an ugly 326 workaround not to call mdsetimage with the -v argument on Darwin 327 kcah 328 329 hack avoid rebuilding asn1 libraries 330 mdate 03 August 2008 331 who veego 332 file src/crypto/dist/heimdal/lib/asn1/gen.c : 1.10 333 file src/lib/libasn1/Makefile : 1.32 334 file src/lib/libhdb/Makefile : 1.23 335 file src/lib/libgssapi/Makefile : 1.20 336 file src/lib/libhx509/Makefile : 1.3 337 pr 9702 39185 338 descr 339 asn1_compile does not check if generated header files do not have to 340 be rebuild. 341 Generate .hx files and copy it in the Makefiles if they changed. 342 kcah 343 344 hack Disable fortification for /usr/bin/makeinfo 345 cdata 24 Mar 2014 346 who tron 347 file src/external/gpl2/texinfo/bin/makeinfo/Makefile : 1.1 348 pr N/A 349 descr 350 If "makeinfo" is compiled with "-D_FORTIFY_SOURCE=2" using GCC 4.8.3 351 it fails to process certain texinfo files, e.g. "cl.texi" 352 included in the Emacs 24.3 distribution. 353 kcah 354 355 hack Disable Stack Smash Protection for /usr/X11R7/bin/xauth 356 cdata 05 Apr 2014 357 who tron 358 file src/external/mit/xorg/bin/xauth/Makefile : 1.4 359 pr N/A 360 descr 361 If "xauth" is compile with "USE_SSP" set to "yes" it fails 362 mysteriously with an error message like this: 363 364 /usr/X11R7/bin/xauth: file /foo/bar/.Xauthority does not exist 365 /usr/X11R7/bin/xauth: unable to link authority file /foo/bar/.Xauthority, use /foo/bar/.Xauthority 366 367 The compiler seems to get confused about the two filename variables 368 used in the link(2) system call. 369 kcah 370 371 hack g++ 5.x barfs on volatile in constexpr initializers 372 cdata 27 Aug 2015 373 who pooka 374 file src/lib/libpthread/pthread_types.h : 1.17 375 pr lib/49989 376 descr 377 Trying to use e.g. pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER 378 in C++ results in: 379 error: temporary of non-literal type '__pthread_mutex_st' 380 in a constant expression 381 constexpr mutex() _NOEXCEPT : __m_(PTHREAD_MUTEX_INITIALIZER) {} 382 [...] 383 include/pthread_types.h:101:8: note: '__pthread_mutex_st' is 384 not literal because: 385 struct __pthread_mutex_st { 386 ^ 387 include/pthread_types.h:103:17: note: non-static data 388 member '__pthread_mutex_st::ptm_errorcheck' has volatile type 389 pthread_spin_t ptm_errorcheck; 390 kcah 391 392 hack libm cabs{,f,l} and g++ 393 cdata 11 Jan 2016 394 who christos 395 pr lib/50646 396 file src/external/gpl3/gcc.old/dist/libstdc++-v3/include/std/complex : 1.2 397 file src/external/gpl3/gcc/dist/libstdc++-v3/include/std/complex : 1.2 398 descr 399 Our cabs and cabsf have a different argument format on some architectures 400 and for that we have created in libm/compat_cabs{,f}.c. The standard 401 versions in libc are __c99_cabs{,f,l} and there are __RENAME()'s in 402 <complex.h>. G++ uses __builtin_cabs{,f,l} to implement those and they 403 translate by default to cabs{,f,l} which gets defined to cabs{,f} (the 404 wrong function) and an undefined cabsl. I've changed <complex> to use 405 the __c99_cabs{,f,l} directly. Using the __builtin_cabs{,f,l} in gcc is 406 still broken. 407 kcah 408 409 port vax 410 411 hack gcc4/vax ICE 412 cdate 413 who tsutsui 414 file sys/arch/vax/conf/Makefile.vax 415 descr 416 GCC4 on vax gets ICE on compiling sys/ddb/db_command.c. 417 -fno-tree-ter prevents it so add it to COPTS. 418 kcah 419 420 hack gcc4/vax compiler crash 421 cdate Fri Jun 30 22:39:12 PDT 2006 422 who mrg 423 file bin/csh/Makefile : 1.27 424 file lib/i18n_module/UTF7/Makefile : 1.2 425 descr 426 GCC4 on vax crashes. -O0 stops it happening so far... 427 kcah 428 429 hack declare boolean_t in two IPF user-mode programs 430 cdate Tue Mar 7 19:19:20 CET 2006 431 who he 432 file dist/ipf/ipsend/iptests.c : 1.8 433 dist/ipf/ipsend/sock.c : 1.7 434 descr 435 The IPF user-mode programs ipsend and iptest first 436 include <sys/types.h> without _KERNEL defined, and 437 later include <sys/file.h> with _KERNEL defined. 438 This causes a build failure when building for vax, 439 since <sys/device.h> ends up being included without 440 bollean_t being defined by <sys/types.h>. 441 Build failure and further details documented in 442 PR#32907. 443 kcah 444 445 hack pcc 0.9.9 large string literals 446 cdat 8 July 2008 447 who gmcgarry 448 file sys/conf/param.c : 1.58 449 descr 450 Workaround for pcc 0.9.9 not handling large string literals 451 which causes kernels with 'options INCLUDE_CONFIG_FILE' to 452 fail compilation. 453 There is a proposal on the pcc mailing list to stuff config 454 file in ELF section. 455 kcah 456 457 hack xorg warnings 458 cdat 30 July 2008, 3 June, 2013 459 who mrg 460 file external/mit/xorg/lib/libSM/Makefile : 1.2 461 external/mit/xorg/lib/libX11/Makefile.libx11 : 1.10 462 external/mit/xorg/lib/libXext/Makefile : 1.2 463 external/mit/xorg/lib/libXfont/Makefile : 1.2 464 descr 465 Disable several warnings or use -Wno-error across Xorg sources 466 while we get them working 467 kcah 468 469 hack 32 bit time leftovers 470 cdat 11 January 2009 471 who christos 472 file lib/libc/time/localtime.c : 1.41 473 lib/libc/time/zic.c : 1.23 474 descr 475 The timezone compiled files still contain 32 bit time_t 476 quantities. I did not want to version the files because 477 the ``parser'' is too ugly for words. What needs to be 478 done, is to rewrite the parser from scratch also to avoid 479 potential core-dumps from parsing invalid files. 480 kcah 481 482 hack 32 bit time leftovers 483 cdat 11 January 2009 484 who christos 485 file various 486 descr 487 Many filesystem on-disk formats have 32 bit times. 488 kcah 489 490 hack gcc 4.5 fsdb miscompile 491 date Sat Nov 9 11:03:02 EST 2013 492 who christos 493 file src/sbin/fsdb/Makefile : 1.36 (and earlier) 494 descr 495 src/sbin/fsdb/fsdb.c: In function 'findblk': 496 src/sbin/fsdb/fsdb.c:610:1: error: unrecognizable insn: 497 (insn 941 940 942 134 src/sbin/fsdb/fsdb.c:589 (set (reg:SI 604) 498 (subreg:SI (mem/s/j:DI (plus:SI (mult:SI (reg:SI 602) 499 (const_int 8 [0x8])) 500 (reg/f:SI 601)) [0 curinode.99_378->dp2.di_ib S8 A32]) 4)) \ 501 -1 (nil)) 502 src/sbin/fsdb/fsdb.c:610:1: internal compiler error: in \ 503 extract_insn, at recog.c:2103 504 kcah 505 506 hack gcc 4.8 gcc miscompiles 507 date Sat Nov 9 16:35:18 EST 2013 508 who christos 509 file distrib/utils/x_ping/Makefile 510 file distrib/vax/miniroot/Makefile.inc 511 file distrib/vax/ramdisk/Makefile 512 file external/gpl3/gdb/lib/libdecnumber/Makefile 513 file sbin/fsdb/Makefile 514 file sbin/newfs_ext2fs/Makefile 515 file sbin/ping/Makefile 516 file usr.sbin/lmcconfig/Makefile 517 file usr.sbin/mtrace/Makefile 518 descr 519 external/gpl3/gcc/dist/gcc/expmed.c:2781:1: 520 internal compiler error: in change_address_1, at emit-rtl.c:2019 521 external/gpl3/gcc/dist/gcc/recog.c:770:1: 522 internal compiler error: in change_address_1, at emit-rtl.c:2019 523 external/gpl3/gcc/dist/libdecnumber/decNumber.c:7214:3: 524 internal compiler error: in change_address_1, at emit-rtl.c:2019 525 sbin/ping/ping.c:679:1: 526 internal compiler error: in change_address_1, at emit-rtl.c:2019 527 sbin/newfs_ext2fs/mke2fs.c:681:1: 528 internal compiler error: in reload_combine_note_use, 529 at postreload.c:1561 530 external/gpl3/gdb/dist/libdecnumber/decNumber.c:7214:3: 531 internal compiler error: in change_address_1, at emit-rtl.c:2019 532 usr.sbin/lmcconfig/lmcconfig.c:939:3: 533 internal compiler error: in reload_combine_note_use, 534 at postreload.c:1561 535 usr.sbin/mtrace/mtrace.c:1655:1: 536 internal compiler error: in change_address_1, at emit-rtl.c:2019 537 kcah 538 539 hack gcc 5.4 cc1 miscompile 540 date Tue Feb 14 07:19:57 JST 2017 541 who rin 542 pr port-vax/51967 543 file external/gpl3/gcc/usr.bin/backend/Makefile : 1.35 544 descr 545 cc1 aborts due to SIGILL when compiling the sample code attached 546 to the PR. As a workaround, compile dse.c with -O0. 547 kcah 548 549 hack libssh miscompile 550 cdate Tue Feb 14 17:58:06 JST 2017 551 mdate Tue Feb 14 18:57:39 JST 2017 552 who rin 553 file crypto/external/bsd/openssh/lib/Makefile : 1.20 554 descr 555 poly1305.c and umac.c are miscompiled, which results in login 556 failure to/from external hosts via ssh. 557 kcah 558 559 hack mandoc miscompile 560 date Tue Feb 14 18:03:05 JST 2017 561 who rin 562 file external/bsd/mdocml/lib/libmandoc/Makefile : 1.8 563 descr 564 mandoc(1) receives SIGILL in in_line_argn() from mdoc_macro.c. 565 kcah 566 567 hack libX11 miscompile 568 date Thu Feb 16 10:00:22 JST 2017 569 who rin 570 file src/external/mit/xorg/lib/libX11/Makefile.libx11 : 1.18 571 descr 572 lcWrap.c is miscompiled, which results in input failure via XIM. 573 Besides, some clients, e.g., pkgsrc/x11/kterm, receive SIGSEGV. 574 kcah 575 576 port arm 577 578 hack gcc-unsigned-compare 579 cdate 09 Mar 2002 580 mdate 18 Mar 2002 581 who bjh21 582 file dist/bind/lib/nameser/ns_parse.c : 1.3 583 file dist/dhcp/minires/ns_parse.c : 1.3 584 file dist/dhcp/omapip/result.c : 1.2 585 file dist/dhcp/server/failover.c : 1.3 586 file gnu/dist/toolchain/bfd/bfd.c : 1.2 587 file gnu/dist/toolchain/bfd/format.c : 1.2 588 file gnu/dist/toolchain/gdb/target.c : 1.2 589 file sys/kern/vfs_subr.c : 1.172 590 descr When checking that a potentially-unsigned enum is >= 0, assign 591 it to an int first. This is necessary to avoid "comparison is 592 always true" warnings with -fshort-enums. Casting to an int 593 really should be enough, but turns out not to be. 594 kcah 595 596 hack gcc-4.5 arm CNAME hostname lookup failure on 597 certain DNS environment (probably -ftree-ter problem) 598 cdate Sat Dec 24 04:59:00 UTC 2011 599 mdate 600 who tsutsui 601 file lib/libc/net/Makefile.inc 1.79 602 descr Hostname lookup against CNAMEs by some commands fails 603 on certain DNS environments if lib/libc/net/gethnamaddr.c 604 (ping(8) etc) and lib/libc/net/getaddrinfo.c (ftp(1) etc) 605 are compiled with -O2, even though nslookup(1) against 606 the same CNAME returns proper hostname. 607 They works properly if compiled with -O2 -fno-tree-ter. 608 Also -O2 fails but -O2 -fno-tree-ter works on the following 609 test case in gcc bugzilla: 610 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48863#c4 611 kcah 612 613 hack gcc-4.5 arm without -fno-tree-vrp generate broken code 614 cdate Wed Nov 14 13:02:02 JST 2012 615 who msaitoh 616 file lib/libc/softfloat/Makefile.inc 617 pr 46953 618 regress src/tests/lib/libm/t_cbrt 619 regress src/tests/lib/libm/t_ceil 620 regress src/tests/lib/libm/t_exp 621 regress src/tests/lib/libm/t_log 622 regress src/tests/lib/libm/t_scalbn 623 regress src/tests/lib/libm/t_sinh 624 regress src/tests/lib/libm/t_sqrt 625 descr Gcc has a bug in tree optimization. For adddf3, 626 -INF + -INF returns 0 without -fno-tree-vrp. 627 Debugging with -fdump-tree-all shows that 628 softfloat.c.021t.cleanup_cfg is ok but softfloat.c.023t.ssa 629 is broken. 630 kcah 631 632 port sh3 633 634 hack gcc4-sh3-bz2 635 cdate Sun May 21 03:34:57 UTC 2006 636 mdate Fri May 16 13:13:00 UTC 2008 637 who mrg, tsutsui 638 file lib/libbz2/Makefile : 1.10 639 descr 640 The in-tree GCC 4.1-based compiler generated too-far 641 pc-relative addresses. Hack is to build with 642 -fno-loop-optimize. 643 kcah 644 645 port m68000 646 647 hack gcc4-m68000 648 cdate Fri Feb 8 10:29:37 PST 2008 649 mdate Sun May 4 15:37:19 UTC 2008 650 who mrg, tsutsui 651 file rescue/Makefile : 1.21 652 file sbin/dump_lfs/Makefile : 1.9 653 file sbin/fsck_ffs/Makefile : 1.35 654 file sbin/fsdb/Makefile : 1.22 655 file share/mk/sys.mk : 1.96 656 file usr.sbin/ndbootd/Makefile : 1.5 657 descr 658 Several internal compiler errors with gcc -O1 659 around 64bit integer arithmetic. 660 This hack uses -O1 and adds some -fno-tree-foo options 661 to avoid the problem. 662 This might be related with GCC Bugzilla Bug 32424. 663 kcah 664 665 port m68k,sh3,vax 666 667 hack gcc-4.8.1 668 cdate Wed Nov 6 20:41:35 EST 2013 669 who christos 670 file src/external/gpl3/gcc/libstdc++-v3/Makefile : 1.6 671 descr 672 compile hashtable_c++0x.cc with -O2 instead of -Os to 673 produce missing instantiation of std::lower_bound expansion 674 for unsigned long. 675 kcah 676 677 port sparc 678 679 hack avoid NULL pointer derefs in savefpstate IPIs and GCC 4.5.3 680 cdate Sun Aug 14 19:26:48 PDT 2011 681 who mrg 682 file sys/arch/sparc64/sparc/cpu.c : 1.234 683 file sys/arch/sparc64/sparc/cpuvar.h : 1.90 684 file sys/arch/sparc64/sparc/genassym.cf : 1.67 685 file sys/arch/sparc64/sparc/locore.s : 1.265 686 descr 687 Something is wrong with GCC 4.5.3 and the savefpstate IPI. 688 Post newlock2 there was a bug where a lock was reduced from 689 IPL_SCHED to IPL_VM (?) and occasionally savefpstate IPI 690 would crash due to NULL IPI. This was fixed by re-using the 691 right IPL value. However, GCC 4.5.3 build kernels have the 692 same problems. For now, the hack is re-instated. 693 kcah 694 695 696 port mips 697 698 hack mips-shared-linker-load-address 699 cdate Fri Oct 7 08:33:10 UTC 2005 700 who simonb 701 file src/sys/kern/exec_elf32.c : 1.107 702 descr 703 With COMPAT_16 or previous enabled (which enables 704 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 705 load and run at address 0. The check to fix this in 706 rev 1.107 only checks the first psection of the ELF 707 executable, which may not be loadable. A more correct 708 fix is to check the first loadable psection instead of 709 just the first psection. 710 kcah 711 712 hack mips-duplicate-ras-end-label 713 cdate Sat Sep 2 23:29:42 2006 714 who martin 715 file src/regress/sys/kern/ras/ras3/Makefile : 1.3 716 descr 717 Add -fno-reorder-blocks to CFLAGS to avoid duplicate 718 labels by duplicated __asm output from RAS_END() 719 macro. 720 kcah 721 722 hack mips-mcount-assembler-warning 723 cdate Tue Jul 29 14:16:52 UTC 2008 724 who lukem 725 file src/lib/libc/gmon/Makefile.inc : 1.8 726 descr 727 Workaround for PR port-mips/39192. 728 common/lib/libc/gmon/mcount.c generates a (fatal) 729 assembler warning on MIPS: 730 Warning: No .cprestore pseudo-op used in PIC code 731 Add COPTS.count.c+=-Wa,--no-warn to avoid -Wa,--fatal-warnings 732 kcah 733 734 port i386 735 736 hack use volatile intermediate variable to enforce rounding 737 cdate Tue Aug 1 22:15:55 MEST 2006 738 who drochner 739 file src/lib/libm/src/lrintf.c : 1.4 740 file src/lib/libm/src/s_rintf.c : 1.8 741 descr 742 gcc-4 does subsequent operations on "float" values within 743 the i387 FPU without rounding the intermediate results 744 kcah 745 746 port x86 747 hack turn off optimization for biosdisk_ll.c because otherwise 748 we are pass the wrong arguments to biosdisk_read(). 749 $ cd /usr/src/sys/arch/i386/floppies/bootflopp-com 750 $ qemu-system-i386 -nographic -fda boot-com1.fs -boot a 751 who christos 752 file src/sys/arch/i386/stand/lib/Makefile : 1.38 753 descr 754 Turning on DISK_DEBUG shows the problem. We should find 755 out which option is causing this. 756 hcah 757 758 port powerpc 759 760 hack avoid using __builtin_return_address(0) because it fails in 761 Xorg's module loader 762 cdate Sat Sep 27 03:52:05 UTC 2008 763 who macallan 764 file src/libexec/ld.elf_so/rtld.c : 1.121 765 descr 766 workaround for PR port-macppc/37812 767 kcah 768 769 hack define TARGET_SECURE_PLT and HAVE_AS_TLS because when 770 building the native compiler via build.sh those don't defined 771 properly. 772 cdate Sat Mar 12 08:00:00 UTC 2011 773 who matt 774 file src/gnu/dist/gcc4/gcc/config/rs6000/netbsd.h 775 descr 776 see above 777 kcah 778 779 port powerpc64 780 781 hack include _errno.c in libposix so that __errno resolves. It 782 should resolve from libc's errno, but somehow it does not. 783 Linker bug? 784 cdate Thu Oct 27 13:19:47 EDT 2011 785 who christos 786 file src/lib/libposix/Makefile: 1.15 787 file src/lib/librt/Makefile: 1.14 788 descr 789 workaround for: 790 libposix_pic.a(cerror.pico)(.text+0x14): unresolvable \ 791 R_PPC64_REL24 relocation against symbol `.__errno' 792 kcah 793 794 hack rename data() function in mdocml to avoid redefined error. 795 Compiler/Assembler bug? 796 cdate Sat Oct 29 11:16:01 EDT 2011 797 who christos 798 file src/external/bsd/mdocml/tbl_data.c: 1.2 799 descr 800 workaround for: 801 {standard input}: Assembler messages: 802 {standard input}:105: Error: symbol `.data' is already \ 803 defined 804 kcah 805 806 port emips 807 808 hack Add nop between ctc1 and mtc0 to avoid assembler internal 809 error 810 cdate Sat Oct 29 16:57:34 EDT 2011 811 who christos 812 file src/sys/arch/mips/mips/mips_fpu.c: 1.7 813 descr 814 workaround for: 815 {standard input}: Assembler messages: 816 {standard input}:730: Internal error! 817 Assertion failure in append_insn at /usr/src/external/gpl3/\ 818 binutils/dist/gas/config/tc-mips.c line 2910. 819 kcah 820 821 port ia64 822 823 hack libgcc unwind dummy function 824 cdate Fri Apr 17 14:31:03 CEST 2015 825 who martin 826 file src/external/gpl3/gcc/dist/libgcc/config/ia64/unwind-ia64.c: 1.4 827 descr 828 Add an empty _Unwind_FindTableEntry() implementation. 829 In the end we will use our libc stuff, and this should 830 go away again. 831 kcah 832 833 port x68k 834 835 hack compiler error with gcc 4.5.x 836 cdate Fri May 24 13:23:01 EDT 2013 837 who christos 838 file src/external/gpl3/gcc/usr.bin/bakend/Makefile: 1.17 839 xsrc/external/mit/xorg/lib/libGLU/Makefile: 1.11 840 descr 841 workaround for: 842 internal compiler error: in cselib_record_set, at cselib.c:1999 843 kcah 844 845 hack fallback to /usr/bin/clang-cpp in rpcgen 846 cdate Wed Jun 5 15:49:27 CEST 2013 847 who joerg 848 file src/usr.bin/rpcgen/rpc_main.c 849 descr 850 It is undecided which compiler owns /usr/bin/cpp and whether it should 851 exist in a MKGCC=no world. To allow rpcgen to work out-of-the-box, 852 if either gcc or clang is installed, use /usr/bin/clang-cpp as fallback. 853 This applies only if RPCGEN_CPP is not set and /usr/bin/cpp is not executable. 854 kcah 855 856 port hppa 857 858 hack compiler error with gcc 4.5.x 859 cdate Tue Jul 23 07:42:28 BST 2013 860 who skrll 861 file src/sys/lib/libkern/Makefile.libkern: 1.26 862 descr 863 workaround for unanalysed codegen bug affecting md5c.c. 864 kcah 865 866 hack gdb vs _rtld_debug_state problem 867 cdate Thu Mar 5 09:49:53 UTC 2015 868 who skrll 869 file src/libexec/ld.elf_so/rtld.c: 1.175 870 descr 871 workaround for problem where gdb misses the breakpoint on 872 _rtld_debug_state when the function is only the 873 bv,n %r0(%rp) instruction - the nullify seems to 874 confuse something 875 kcah 876 877 port mips64* 878 hack compiler crashes on mips64* with optimization enabled 879 cdate Tue May 13 18:46:48 UTC 2014 880 who macallan 881 file src/external/lgpl3/gmp/lib/libgmp/arch/mips64eb/Makefile.inc: 1.6 882 src/external/lgpl3/gmp/lib/libgmp/arch/mips64eb/config.h: 1.5 883 src/external/lgpl3/gmp/lib/libgmp/arch/mips64el/Makefile.inc: 1.6 884 src/external/lgpl3/gmp/lib/libgmp/arch/mips64el/config.h: 1.5 885 descr workaround for n32 gcc doing unaligned 64bit accesses when optimizing 886 pr 48696 887 kcah 888 889 port vax 890 hack compile boot with -O1 891 cdate Sat May 24 09:40:58 CEST 2014 892 who martin 893 file src/sys/arch/vax/boot/boot/Makefile: 1.41 894 descr /boot does not work when compiled with -O2 and gcc 4.8 895 kcah 896 897 port vax 898 hack compile nir.c in gallium with -O1 899 cdate Mon Oct 28 14:39:35 EDT 2019 900 who christos 901 file /cvsroot/src/external/mit/xorg/lib/gallium/Makefile 1.36 902 descr gallium does not compile. 903 kcah 904 905 port aarch64 906 hack compile ex_filter.c in vi with -O0 907 cdate Mon Oct 28 14:39:35 EDT 2019 908 who christos 909 file /cvsroot/src/external/bsd/nvi/usr.bin/nvi/Makefile 1.20 910 descr ":%! sort" core-dumps, tm is NULL but was not NULL on entry. 911 kcah 912 913 port sh3 914 hack compile parse.c in battlestar with -Wno-restrict 915 cdate Mon Oct 28 14:39:35 EDT 2019 916 who christos 917 file /cvsroot/src/games/battlestar/Makefile 1.11 918 descr fails to compile, confused by char words[][]; 919 strcpy(words[n - 1], words[n + 1]); 920 kcah 921 922 port sh3 923 hack compile ddns.c in dhcpcd with no-stringop-overflow 924 cdate Tue Oct 29 20:25:59 EDT 2019 925 who christos 926 file /cvsroot/src/external/mpl/dhcp/bin/server/Makefile 1.2 927 descr fails to compile, confused by builtin_object_size in strcat(p, ".in..") 928 kcah 929 930 port arm 931 hack avoid using labels in a 12-bit constant. 932 who matt 933 file crypto/external/bsd/openssl/lib/libcrypto/arch/arm/aes-armv4.S: 1.2 934 descr workaround for clang misassembling an instruction 935 kcah 936 937 port sparc64 938 hack during profiling with -m32 (and ASLR) labels are not generated 939 consistently 940 who christos 941 file /cvsroot/src/crypto/external/bsd/heimdal/lib/libasn1/Makefile: 1.4 942 desc asn1_krb5_asn1.po does not produce the same results during successive 943 compilation runs; it is bimodal. Turning optimization to -O0 fixes 944 the issue 945 kcah 946 947 port ia64 948 hack ski emulator crashes 949 who scole 950 file /cvsroot/src/sys/external/bsd/acpica/dist/tables/tbxfload.c: 1.6 951 desc 952 ski emulator crashes during acpi detection. Added a check for 953 uninitialized index. Submitted a request for change with upstream 954 mailing list, but never got a response 955 kcah 956 957 port vax 958 hack compile rtld.c with -O0 959 cdate Wed Apr 3 17:38:38 EDT 2019 960 who christos 961 file src/libexec/ld.elf_so/Makefile: 1.141 962 descr Disable optimization for rtld.c on the vax with gcc-7. Crashes on the 963 second pass loop with elm == 0xffffffff 964 kcah 965 966 port alpha 967 hack GCC 7.4/8.3: userland binaries crash randomly (port-alpha/54307) 968 cdate Fri Nov 1 20:43:35 UTC 2019 969 who rin 970 file src/external/bsd/jemalloc/lib/Makefile.inc: 1.11 971 descr rtree.c and tcache.c need to be compiled with -O0, alternatively, 972 you can compile whole jemalloc with -DJEMALLOC_DEBUG. 973 kcah 974
Indexes created Wed Nov 05 22:09:55 GMT 2025