HACKS revision 1.181
1 # $NetBSD: HACKS,v 1.181 2017/02/14 09:07:35 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 gcc-5.3 optimizes memset+malloc -> calloc inside calloc 31 mdate 4 May 2016 32 who christos 33 file external/gpl2/lib/libmalloc/lib/Makefile 1.3 -> 1.5 34 descr 35 resulting in infinite recursion; we prevent this with 36 -fno-builtin-malloc 37 kcah 38 39 hack turn off tree-vrp for parts of ufs_lookup.c 40 mdate 28 April 2016 41 who mrg christos 42 file src/sys/ufs/ufs/ufs_lookup.c : 1.144 43 pr 51094 44 descr 45 with -ftree-vrp enabled in ufs_lookup.c sometimes bad dir 46 panicks are see. 47 hcah 48 49 hack netstat ieee1394 address printing. 50 mdate 14 Nov 2000 51 who matt 52 file lib/libc/net/getnameinfo.c : 1.32 : 497 : 503 53 descr 54 Because the current implementation of IP over IEEE1394, the 55 fw device address contains more than just the IEEE1394 EUI-64. 56 So when printing out IEEE1394 addresses, ignore the extra stuff. 57 kcah 58 59 hack xterm vs. libterm 60 mdate 01 Aug 2000 61 who jdc 62 file xsrc/xc/programs/xterm/main.c : 1.2 : 3609 : 3614 63 pr 10383 64 descr 65 In order to extend the termcap string over 1023 bytes, a ZZ entry was 66 introduced to point to a memory location containing the full entry. 67 Without this hack, xterm will export a termcap containing the ZZ 68 entry, which will then be ignored by libterm. As xterm modifies the 69 exported termcap, this would cause those modifications to be ignored. 70 kcah 71 72 hack wi-at-big-endian-bus 73 cdate 15 Mar 2002 74 who martin 75 file dev/ic/wireg.h 76 descr Add an option to access the underlying bus in big endian byte order 77 to work around deficiencies in bus_space_{read,write}_* macros. 78 Those don't allow the implementation of a proper pcmcia bus space 79 tag. 80 kcah 81 82 hack specific knowledge of colours in curses code 83 cdate Sun Apr 6 11:05:24 BST 2003 84 who jdc 85 file lib/libcurses/color.c : r1.24 86 descr 87 Swap red/blue and yellow/cyan colours for COLOR_OTHER. 88 Fix is to enhance libtermcap to understand terminfo-style % sequences. 89 See also: 90 http://mail-index.NetBSD.org/tech-userlevel/2003/04/06/0000.html 91 kcah 92 93 hack Compensation for differing types of LINUX_USRSTACK and USRSTACK 94 cdate 21 Aug 2003 95 who he 96 file sys/miscfs/procfs/procfs_linux.c : 1.14 97 descr 98 Not all ports have LINUX_USRSTACK and/or USRSTACK defined as 99 literals/constants, but refer to variables of a type which is 100 not "unsigned long", causing compilation of procfs_linux.c to 101 fail with "makes integer from pointer without a cast". This 102 is observed on e.g. the sun3 port. Ideally the "types" for 103 symbols should be consistent across all ports. 104 kcah 105 106 hack gcc4 wrong uninitialized variable 107 mdate 10 May 2006 108 who mrg 109 file bin/ksh/eval.c : 1.6 110 file bin/sh/histedit.c : 1.39 111 file bin/sh/parser.c : 1.60 112 file crypto/dist/heimdal/kdc/524.c : 1.10 113 file crypto/dist/ssh/sftp.c : 1.20 114 file crypto/dist/ssh/ssh-keysign.c : 1.11 115 file dist/ipf/lib/hostname.c : 1.2 116 file dist/ipf/tools/ipmon.c : 1.8 117 file dist/ntp/ntpd/ntp_request.c : 1.4 118 file dist/ntp/ntpd/refclock_shm.c : 1.4 119 file dist/ntp/sntp/timing.c : 1.3 120 file dist/pppd/pppstats/pppstats.c : 1.3 121 file dist/smbfs/lib/smb/rap.c : 1.6 122 file dist/tcpdump/print-zephyr.c : 1.5 123 file distrib/utils/sysinst/aout2elf.c : 1.12 124 file gnu/libexec/uucp/uucico/uucico.c : 1.6 125 file lib/libc/citrus/citrus_csmapper.c : 1.6 126 file lib/libc/citrus/citrus_pivot_factory.c : 1.5 127 file lib/libc/inet/inet_cidr_ntop.c : 1.3 128 file lib/libc/inet/inet_ntop.c : 1.3 129 file lib/libc/stdio/vfwprintf.c : 1.8 130 file libexec/ld.elf_so/arch/m68k/mdreloc.c : 1.20 131 file libexec/ld.elf_so/arch/powerpc/ppc_reloc.c : 1.40 132 file libexec/ld.elf_so/arch/sh3/mdreloc.c : 1.22 133 file libexec/ld.elf_so/arch/sparc/mdreloc.c : 1.39 134 file libexec/ld.elf_so/arch/sparc64/mdreloc.c : 1.39 135 file libexec/ld.elf_so/arch/vax/mdreloc.c : 1.21 136 file libexec/ld.elf_so/arch/x86_64/mdreloc.c : 1.27 137 file sbin/fsck_ext2fs/dir.c : 1.19 138 file sbin/routed/rtquery/rtquery.c : 1.18 139 file sys/arch/amd64/amd64/pmap.c : 1.26 140 file sys/arch/i386/pci/piixpcib.c : 1.4 141 file sys/arch/m68k/m68k/pmap_motorola.c : 1.4 142 file sys/crypto/cast128/cast128.c : 1.9 143 file sys/ddb/db_command.c : 1.86 144 file sys/dev/cardbus/cardbus_map.c : 1.21 145 file sys/dev/fss.c : 1.25 146 file sys/dev/ic/igsfb.c : 1.39 147 file sys/dev/ic/mb86950.c : 1.5 148 file sys/dev/ic/midway.c : 1.71 149 file sys/dev/kttcp.c : 1.18 150 file sys/dev/rasops/rasops_bitops.h : 1.9 151 file sys/dev/pci/cmpci.c : 1.31 152 file sys/dev/pci/machfb.c : 1.45 153 file sys/dev/usb/ohci.c : 1.174 154 file sys/dev/usb/uhci.c : 1.196 155 file sys/dev/rasops/rasops_bitops.h : 1.9 156 file sys/dist/ipf/netinet/ip_nat.c : 1.10 157 file sys/dist/ipf/netinet/ip_rpcb_pxy.c : 1.8 158 file sys/dist/pf/net/pf.c : 1.22 159 file sys/fs/udf/udf_vnops.c : 1.4 160 file sys/kern/kern_sig.c : 1.219 161 file sys/kern/tty.c : 1.181 162 file sys/net/bpf.c : 1.116 163 file sys/net/zlib.c : 1.26 164 file sys/netccitt/if_x25subr.c : 1.37 165 file sys/netinet/in.c : 1.107 166 file sys/netsmb/smb_smb.c : 1.27 167 file sys/netsmb/smb_trantcp.c : 1.22 168 file sys/nfs/nfs_serv.c : 1.108 169 file sys/nfs/nfs_socket.c : 1.129 170 file sys/nfs/nfs_syscalls.c : 1.91 171 file sys/ufs/lfs/lfs_vfsops.c : 1.207 [also (char *)] 172 file usr.bin/ftp/ftp.c : 1.140 173 file usr.bin/find/function.c : 1.54 174 file usr.bin/mail/tty.c : 1.20 175 file usr.bin/msgc/msg_sys.def : 1.33-1.34 176 file usr.bin/nl/nl.c : 1.7 177 file usr.bin/systat/keyboard.c : 1.23 178 file usr.bin/usbhidctl/usbhid.c : 1.29 179 file usr.bin/vi/cl/cl_read.c : 1.5 180 file usr.bin/vi/ex/ex_cscope.c : 1.12 181 file usr.bin/vi/ex/ex_tag.c : 1.19 182 file usr.bin/vi/vi/v_txt.c : 1.15 183 file usr.sbin/altq/altqstat/qdisc_rio.c : 1.4 184 file usr.sbin/cron/do_command.c : 1.19 185 file usr.sbin/timed/timed/slave.c : 1.15 186 descr 187 GCC 4.1 gets many uninitialised variable warnings wrong. We should 188 really audit all the old hacks like this when older compilers are 189 removed from the tree, as many are probably no longer required. 190 The problem is that it does not recognize initialization via function 191 call pointer. I.e. 192 int p; 193 foo(&p); 194 does not mark p as initialized. 195 kcah 196 197 hack gcc4 pointer sign and strict aliasing problems 198 mdate 10 May 2006 199 who mrg 200 file bin/ed/Makefile : 1.33 201 file distrib/utils/sysinst/Makefile.inc : 1.44 202 file distrib/utils/x_dhclient/Makefile : 1.15 203 file games/bcd/Makefile : 1.5 204 file games/dab/Makefile : 1.5 205 file games/larn/Makefile : 1.17 206 file games/pom/Makefile : 1.5 207 file lib/libasn1/Makefile : 1.26 208 file lib/libcrypt/Makefile : 1.17 209 file lib/libgssapi/Makefile : 1.16 210 file lib/libhdb/Makefile : 1.20 211 file lib/libkadm5clnt/Makefile : 1.21 212 file lib/libkadm5srv/Makefile : 1.25 213 file lib/libkrb5/Makefile : 1.35 214 file lib/libssh/Makefile : 1.6 215 file lib/libtelnet/Makefile : 1.26 216 file libexec/getty/Makefile : 1.14 217 file libexec/kadmind/Makefile : 1.19 218 file libexec/kpasswdd/Makefile : 1.14 219 file sbin/atactl/Makefile : 1.3 220 file sbin/cgdconfig/Makefile : 1.7 221 file sbin/clri/Makefile : 1.13 222 file sbin/dkctl/Makefile : 1.4 223 file sbin/dump/Makefile : 1.33 224 file sbin/fdisk/Makefile : 1.35 225 file sbin/fsck_ext2fs/Makefile : 1.11 226 file sbin/fsck_ffs/Makefile : 1.29 227 file sbin/fsdb/Makefile : 1.18 228 file sbin/mount_smbfs/Makefile : 1.4 229 file sbin/newfs/Makefile : 1.30 230 file sbin/newfs_sysvbfs/Makefile : 1.2 231 file sbin/restore/Makefile : 1.23 232 file sbin/veriexecctl/Makefile : 1.11 233 file sys/lib/libsa/Makefile : 1.59 234 file sys/arch/evbarm/adi_brh/brh_machdep.c : 1.24 235 file usr.bin/awk/Makefile : 1.9 236 file usr.bin/crontab/Makefile : 1.24 237 file usr.bin/ctags/Makefile : 1.8 238 file usr.bin/gzip/Makefile : 1.10 239 file usr.bin/ssh/sftp/Makefile : 1.10 240 file usr.bin/ssh/ssh/Makefile : 1.25 241 file usr.bin/vi/build/Makefile : 1.26 242 file usr.bin/telnet/Makefile : 1.40 243 file usr.bin/tn3270/tn3270/Makefile : 1.36 244 file usr.bin/tr/Makefile : 1.4 245 file usr.sbin/amd/amd/Makefile : 1.27 246 file usr.sbin/amd/amq/Makefile : 1.14 247 file usr.sbin/amd/libamu/Makefile : 1.20 248 file usr.sbin/amd/pawd/Makefile : 1.5 249 file usr.sbin/bind/Makefile.inc : 1.22 250 file usr.sbin/bind/libdns/Makefile : 1.3 251 file usr.sbin/bind/named/Makefile : 1.17 252 file usr.sbin/bootp/bootptest/Makefile : 1.2 253 file usr.sbin/chrtbl/Makefile : 1.6 254 file usr.sbin/cron/Makefile : 1.12 255 file usr.sbin/dhcp/Makefile.inc : 1.20 256 file usr.sbin/hprop/Makefile : 1.13 257 file usr.sbin/installboot/Makefile : 1.35 258 file usr.sbin/ipf/ipftest/Makefile : 1.32 259 file usr.sbin/isdn/isdnd/Makefile : 1.6 260 file usr.sbin/isdn/isdnmonitor/Makefile : 1.3 261 file usr.sbin/isdn/isdntel/Makefile : 1.2 262 file usr.sbin/isdn/isdntrace/Makefile : 126 263 file usr.sbin/mopd/common/Makefile : 1.10 264 file usr.sbin/mopd/mopd/Makefile : 1.9 265 file usr.sbin/mopd/mopprobe/Makefile : 1.7 266 file usr.sbin/makefs/Makefile : 1.17 267 file usr.sbin/mscdlabel/Makefile : 1.5 268 file usr.sbin/pkg_install/add/Makefile : 1.7 269 file usr.sbin/pkg_install/create/Makefile : 1.5 270 file usr.sbin/pkg_install/lib/Makefile : 1.28 271 file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11 272 file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5 273 file usr.sbin/pppd/Makefile.inc : 1.3 274 file usr.sbin/pppd/pppd/Makefile : 1.38 275 file usr.sbin/rarpd/Makefile : 1.10 276 file usr.sbin/rbootd/Makefile : 1.10 277 file usr.sbin/rpc.pcnfsd/Makefile : 1.17 278 file usr.sbin/tcpdump/Makefile : 1.42 279 descr 280 GCC 4.1 warns on pointer sign comparision/assignments and lots of 281 code does not conform. For now we use -Wno-pointer-sign and 282 -fno-strict-aliasing. 283 kcah 284 285 hack disable ctf for gcc-4.8 build 286 mdate April 3 2014 287 who christos 288 file external/gpl3/gcc/usr.bin/Makefile.frontend : 1.4 289 file external/gpl3/gcc/usr.bin/Makefile.backend : 1.5 290 descr 291 nbctfconvert -g -L VERSION -g fold-const.o 292 ERROR: fold-const.c: failed to get mapping for tid 79154 \ 293 ((null)) <13532> 294 kcak 295 296 hack emacs aborting on exit (libgcc issue) 297 mdate 7 November 2011 298 who christos 299 file external/gpl3/gcc/dist/gcc/unwind-dw2-fde.c : 1.2 300 descr 301 GCC 4.5.3 now calls __unregister_frame_info_bases() on unloading/exit 302 to do just that. If the symbol requested is not found, then it aborts. 303 emacs 23.3 triggers this assertion. For now disable aborting, and 304 silently ignore. 305 kcah 306 307 hack cross-building hack on Darwin 308 mdate 20 July 2008 309 who agc 310 file src/distrib/common/Makefile.mdset : 1.33 311 descr 312 Darwin has problems with getopt() when used in mdsetimage -v, 313 due to the difference between BSD and libiberty() getopt 314 implementations, more fully described in 315 http://mail-index.netbsd.org/current-users/2008/06/27/msg003242.html 316 and the subsequent thread. For just now, we just have an ugly 317 workaround not to call mdsetimage with the -v argument on Darwin 318 kcah 319 320 hack avoid rebuilding asn1 libraries 321 mdate 03 August 2008 322 who veego 323 file src/crypto/dist/heimdal/lib/asn1/gen.c : 1.10 324 file src/lib/libasn1/Makefile : 1.32 325 file src/lib/libhdb/Makefile : 1.23 326 file src/lib/libgssapi/Makefile : 1.20 327 file src/lib/libhx509/Makefile : 1.3 328 pr 9702 39185 329 descr 330 asn1_compile does not check if generated header files do not have to 331 be rebuild. 332 Generate .hx files and copy it in the Makefiles if they changed. 333 kcah 334 335 hack MKPIE ldscript for /usr.sbin/crash 336 cdate 22 April 2010 337 who christos 338 file src/usr.sbin/crash/Makefile : 1.5 339 file src/usr.sbin/crash/ldscript.crash : 1.1 340 pr N/A 341 descr 342 fixed in binutils-2.20.1. Linking with MKPIE=yes causes overlapping 343 sections 344 kcah 345 346 hack Disable fortification for /usr/bin/makeinfo 347 cdata 24 Mar 2014 348 who tron 349 file src/gnu/usr.bin/texinfo/makeinfo/Makefile : 1.8 350 pr N/A 351 descr 352 If "makeinfo" is compiled with "-D_FORTIFY_SOURCE=2" using GCC 4.8.3 353 it fails to process certain texinfo files, e.g. "cl.texi" 354 included in the Emacs 24.3 distribution. 355 kcah 356 357 hack Disable Stack Smash Protection for /usr/X11R7/bin/xauth 358 cdata 05 Apr 2014 359 who tron 360 file src/external/mit/xorg/bin/xauth/Makefile : 1.4 361 pr N/A 362 descr 363 If "xauth" is compile with "USE_SSP" set to "yes" it fails 364 mysteriously with an error message like this: 365 366 /usr/X11R7/bin/xauth: file /foo/bar/.Xauthority does not exist 367 /usr/X11R7/bin/xauth: unable to link authority file /foo/bar/.Xauthority, use /foo/bar/.Xauthority 368 369 The compiler seems to get confused about the two filename variables 370 used in the link(2) system call. 371 kcah 372 373 hack g++ 5.x barfs on volatile in constexpr initializers 374 cdata 27 Aug 2015 375 who pooka 376 file src/lib/libpthread/pthread_types.h : 1.17 377 pr lib/49989 378 descr 379 Trying to use e.g. pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER 380 in C++ results in: 381 error: temporary of non-literal type '__pthread_mutex_st' 382 in a constant expression 383 constexpr mutex() _NOEXCEPT : __m_(PTHREAD_MUTEX_INITIALIZER) {} 384 [...] 385 include/pthread_types.h:101:8: note: '__pthread_mutex_st' is 386 not literal because: 387 struct __pthread_mutex_st { 388 ^ 389 include/pthread_types.h:103:17: note: non-static data 390 member '__pthread_mutex_st::ptm_errorcheck' has volatile type 391 pthread_spin_t ptm_errorcheck; 392 kcah 393 394 hack libm cabs{,f,l} and g++ 395 cdata 11 Jan 2016 396 who christos 397 pr lib/50646 398 file src/external/gpl3/gcc.old/dist/libstdc++-v3/include/std/complex : 1.2 399 file src/external/gpl3/gcc/dist/libstdc++-v3/include/std/complex : 1.2 400 descr 401 Our cabs and cabsf have a different argument format on some architectures 402 and for that we have created in libm/compat_cabs{,f}.c. The standard 403 versions in libc are __c99_cabs{,f,l} and there are __RENAME()'s in 404 <complex.h>. G++ uses __builtin_cabs{,f,l} to implement those and they 405 translate by default to cabs{,f,l} which gets defined to cabs{,f} (the 406 wrong function) and an undefined cabsl. I've changed <complex> to use 407 the __c99_cabs{,f,l} directly. Using the __builtin_cabs{,f,l} in gcc is 408 still broken. 409 kcah 410 411 port vax 412 413 hack gcc4/vax ICE 414 cdate 415 who tsutsui 416 file sys/arch/vax/conf/Makefile.vax 417 descr 418 GCC4 on vax gets ICE on compiling sys/ddb/db_command.c. 419 -fno-tree-ter prevents it so add it to COPTS. 420 kcah 421 422 hack gcc4/vax compiler crash 423 cdate Fri Jun 30 22:39:12 PDT 2006 424 who mrg 425 file bin/csh/Makefile : 1.27 426 file lib/i18n_module/UTF7/Makefile : 1.2 427 descr 428 GCC4 on vax crashes. -O0 stops it happening so far... 429 kcah 430 431 hack declare boolean_t in two IPF user-mode programs 432 cdate Tue Mar 7 19:19:20 CET 2006 433 who he 434 file dist/ipf/ipsend/iptests.c : 1.8 435 dist/ipf/ipsend/sock.c : 1.7 436 descr 437 The IPF user-mode programs ipsend and iptest first 438 include <sys/types.h> without _KERNEL defined, and 439 later include <sys/file.h> with _KERNEL defined. 440 This causes a build failure when building for vax, 441 since <sys/device.h> ends up being included without 442 bollean_t being defined by <sys/types.h>. 443 Build failure and further details documented in 444 PR#32907. 445 kcah 446 447 hack pcc 0.9.9 large string literals 448 cdat 8 July 2008 449 who gmcgarry 450 file sys/conf/param.c : 1.58 451 descr 452 Workaround for pcc 0.9.9 not handling large string literals 453 which causes kernels with 'options INCLUDE_CONFIG_FILE' to 454 fail compilation. 455 There is a proposal on the pcc mailing list to stuff config 456 file in ELF section. 457 kcah 458 459 hack xorg warnings 460 cdat 30 July 2008, 3 June, 2013 461 who mrg 462 file external/mit/xorg/lib/libSM/Makefile : 1.2 463 external/mit/xorg/lib/libX11/Makefile.libx11 : 1.10 464 external/mit/xorg/lib/libXext/Makefile : 1.2 465 external/mit/xorg/lib/libXfont/Makefile : 1.2 466 descr 467 Disable several warnings or use -Wno-error across Xorg sources 468 while we get them working 469 kcah 470 471 hack 32 bit time leftovers 472 cdat 11 January 2009 473 who christos 474 file lib/libc/time/localtime.c : 1.41 475 lib/libc/time/zic.c : 1.23 476 descr 477 The timezone compiled files still contain 32 bit time_t 478 quantities. I did not want to version the files because 479 the ``parser'' is too ugly for words. What needs to be 480 done, is to rewrite the parser from scratch also to avoid 481 potential core-dumps from parsing invalid files. 482 kcah 483 484 hack 32 bit time leftovers 485 cdat 11 January 2009 486 who christos 487 file various 488 descr 489 Many filesystem on-disk formats have 32 bit times. 490 kcah 491 492 hack gcc 4.5 fsdb miscompile 493 date Sat Nov 9 11:03:02 EST 2013 494 who christos 495 file src/sbin/fsdb/Makefile : 1.36 (and earlier) 496 descr 497 src/sbin/fsdb/fsdb.c: In function 'findblk': 498 src/sbin/fsdb/fsdb.c:610:1: error: unrecognizable insn: 499 (insn 941 940 942 134 src/sbin/fsdb/fsdb.c:589 (set (reg:SI 604) 500 (subreg:SI (mem/s/j:DI (plus:SI (mult:SI (reg:SI 602) 501 (const_int 8 [0x8])) 502 (reg/f:SI 601)) [0 curinode.99_378->dp2.di_ib S8 A32]) 4)) \ 503 -1 (nil)) 504 src/sbin/fsdb/fsdb.c:610:1: internal compiler error: in \ 505 extract_insn, at recog.c:2103 506 kcah 507 508 hack gcc 4.8 gcc miscompiles 509 date Sat Nov 9 16:35:18 EST 2013 510 who christos 511 file distrib/utils/x_ping/Makefile 512 file distrib/vax/miniroot/Makefile.inc 513 file distrib/vax/ramdisk/Makefile 514 file external/gpl3/gdb/lib/libdecnumber/Makefile 515 file sbin/fsdb/Makefile 516 file sbin/newfs_ext2fs/Makefile 517 file sbin/ping/Makefile 518 file usr.sbin/lmcconfig/Makefile 519 file usr.sbin/mtrace/Makefile 520 descr 521 external/gpl3/gcc/dist/gcc/expmed.c:2781:1: 522 internal compiler error: in change_address_1, at emit-rtl.c:2019 523 external/gpl3/gcc/dist/gcc/recog.c:770:1: 524 internal compiler error: in change_address_1, at emit-rtl.c:2019 525 external/gpl3/gcc/dist/libdecnumber/decNumber.c:7214:3: 526 internal compiler error: in change_address_1, at emit-rtl.c:2019 527 sbin/ping/ping.c:679:1: 528 internal compiler error: in change_address_1, at emit-rtl.c:2019 529 sbin/newfs_ext2fs/mke2fs.c:681:1: 530 internal compiler error: in reload_combine_note_use, 531 at postreload.c:1561 532 external/gpl3/gdb/dist/libdecnumber/decNumber.c:7214:3: 533 internal compiler error: in change_address_1, at emit-rtl.c:2019 534 usr.sbin/lmcconfig/lmcconfig.c:939:3: 535 internal compiler error: in reload_combine_note_use, 536 at postreload.c:1561 537 usr.sbin/mtrace/mtrace.c:1655:1: 538 internal compiler error: in change_address_1, at emit-rtl.c:2019 539 kcah 540 541 hack gcc 5.4 cc1 miscompile 542 date Tue Feb 14 07:19:57 JST 2017 543 who rin 544 pr port-vax/51967 545 file external/gpl3/gcc/usr.bin/backend/Makefile : 1.35 546 descr 547 cc1 aborts due to SIGILL when compiling the sample code attached 548 to the PR. As a workaround, compile dse.c with -O0. 549 kcah 550 551 hack libssh miscompile 552 date Tue Feb 14 17:58:06 JST 2017 553 who rin 554 file crypto/external/bsd/openssh/lib/Makefile : 1.20 555 descr 556 umac.c is miscompiled, which results in login failure to/from 557 external hosts via ssh. 558 kcah 559 560 hack mandoc miscompile 561 date Tue Feb 14 18:03:05 JST 2017 562 who rin 563 file external/bsd/mdocml/lib/libmandoc/Makefile : 1.8 564 descr 565 mandoc(1) receives SIGILL in in_line_argn() from mdoc_macro.c. 566 kcah 567 568 port arm 569 570 hack gcc-unsigned-compare 571 cdate 09 Mar 2002 572 mdate 18 Mar 2002 573 who bjh21 574 file dist/bind/lib/nameser/ns_parse.c : 1.3 575 file dist/dhcp/minires/ns_parse.c : 1.3 576 file dist/dhcp/omapip/result.c : 1.2 577 file dist/dhcp/server/failover.c : 1.3 578 file gnu/dist/toolchain/bfd/bfd.c : 1.2 579 file gnu/dist/toolchain/bfd/format.c : 1.2 580 file gnu/dist/toolchain/gdb/target.c : 1.2 581 file sys/kern/vfs_subr.c : 1.172 582 descr When checking that a potentially-unsigned enum is >= 0, assign 583 it to an int first. This is necessary to avoid "comparison is 584 always true" warnings with -fshort-enums. Casting to an int 585 really should be enough, but turns out not to be. 586 kcah 587 588 hack gcc-4.5 arm CNAME hostname lookup failure on 589 certain DNS environment (probably -ftree-ter problem) 590 cdate Sat Dec 24 04:59:00 UTC 2011 591 mdate 592 who tsutsui 593 file lib/libc/net/Makefile.inc 1.79 594 descr Hostname lookup against CNAMEs by some commands fails 595 on certain DNS environments if lib/libc/net/gethnamaddr.c 596 (ping(8) etc) and lib/libc/net/getaddrinfo.c (ftp(1) etc) 597 are compiled with -O2, even though nslookup(1) against 598 the same CNAME returns proper hostname. 599 They works properly if compiled with -O2 -fno-tree-ter. 600 Also -O2 fails but -O2 -fno-tree-ter works on the following 601 test case in gcc bugzilla: 602 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48863#c4 603 kcah 604 605 hack gcc-4.5 arm without -fno-tree-vrp generate broken code 606 cdate Wed Nov 14 13:02:02 JST 2012 607 who msaitoh 608 file lib/libc/softfloat/Makefile.inc 609 pr 46953 610 regress src/tests/lib/libm/t_cbrt 611 regress src/tests/lib/libm/t_ceil 612 regress src/tests/lib/libm/t_exp 613 regress src/tests/lib/libm/t_log 614 regress src/tests/lib/libm/t_scalbn 615 regress src/tests/lib/libm/t_sinh 616 regress src/tests/lib/libm/t_sqrt 617 descr Gcc has a bug in tree optimization. For adddf3, 618 -INF + -INF returns 0 without -fno-tree-vrp. 619 Debugging with -fdump-tree-all shows that 620 softfloat.c.021t.cleanup_cfg is ok but softfloat.c.023t.ssa 621 is broken. 622 kcah 623 624 port sh3 625 626 hack gcc4-sh3-bz2 627 cdate Sun May 21 03:34:57 UTC 2006 628 mdate Fri May 16 13:13:00 UTC 2008 629 who mrg, tsutsui 630 file lib/libbz2/Makefile : 1.10 631 descr 632 The in-tree GCC 4.1-based compiler generated too-far 633 pc-relative addresses. Hack is to build with 634 -fno-loop-optimize. 635 kcah 636 637 port sh3eb 638 hack gcc4.8.1 639 cdate Thu Nov 7 16:31:23 EST 2013 640 who christos 641 file src/sys/rump/net/lib/libnetbt/Makefile : 1.2 642 desrc 643 for profiling 644 compile l2cap_signal.c with -O0 to avoid: 645 ./netbt/l2cap_signal.c:36: 646 /p/netbsd/cvsroot/src/sys/rump/net/lib/libnetbt/../../../../\ 647 netbt/l2cap_signal.c: In function 'l2cap_recv_signal': 648 ./sh3/byte_swap.h:20:2: error: 'asm' operand requires \ 649 impossible reload 650 __asm volatile ("swap.b %1,%0" : "=r"(rval) : "r"(x)); 651 kcah 652 653 port sh3el 654 hack gcc4.8.1 655 cdate Fri Nov 8 19:27:01 EST 2013 656 who christos 657 file src/external/bsd/libevent/lib/libevent/Makefile : 1.2 658 desrc 659 for profiling 660 compile evdns.c with -O0 to avoid: 661 ./sh3/byte_swap.h:20:2: error: 'asm' operand requires \ 662 impossible reload 663 __asm volatile ("swap.b %1,%0" : "=r"(rval) : "r"(x)); 664 kcah 665 666 hack gcc4.8.1 667 cdate Fri Nov 8 19:34:48 EST 2013 668 who christos 669 file src/usr.sbin/racoon/Makefile : 1.27 670 desrc 671 for profiling 672 compile ipsec_doi.c with -O0 to avoid: 673 ./sh3/byte_swap.h:20:2: error: 'asm' operand requires \ 674 impossible reload 675 __asm volatile ("swap.b %1,%0" : "=r"(rval) : "r"(x)); 676 kcah 677 678 port m68000 679 680 hack gcc4-m68000 681 cdate Fri Feb 8 10:29:37 PST 2008 682 mdate Sun May 4 15:37:19 UTC 2008 683 who mrg, tsutsui 684 file rescue/Makefile : 1.21 685 file sbin/dump_lfs/Makefile : 1.9 686 file sbin/fsck_ffs/Makefile : 1.35 687 file sbin/fsdb/Makefile : 1.22 688 file share/mk/sys.mk : 1.96 689 file usr.sbin/ndbootd/Makefile : 1.5 690 descr 691 Several internal compiler errors with gcc -O1 692 around 64bit integer arithmetic. 693 This hack uses -O1 and adds some -fno-tree-foo options 694 to avoid the problem. 695 This might be related with GCC Bugzilla Bug 32424. 696 kcah 697 698 port m68k,sh3,vax 699 700 hack gcc-4.8.1 701 cdate Wed Nov 6 20:41:35 EST 2013 702 who christos 703 file src/external/gpl3/gcc/libstdc++-v3/Makefile : 1.6 704 descr 705 compile hashtable_c++0x.cc with -O2 instead of -Os to 706 produce missing instantiation of std::lower_bound expansion 707 for unsigned long. 708 kcah 709 710 port sparc 711 712 hack avoid NULL pointer derefs in savefpstate IPIs and GCC 4.5.3 713 cdate Sun Aug 14 19:26:48 PDT 2011 714 who mrg 715 file sys/arch/sparc64/sparc/cpu.c : 1.234 716 file sys/arch/sparc64/sparc/cpuvar.h : 1.90 717 file sys/arch/sparc64/sparc/genassym.cf : 1.67 718 file sys/arch/sparc64/sparc/locore.s : 1.265 719 descr 720 Something is wrong with GCC 4.5.3 and the savefpstate IPI. 721 Post newlock2 there was a bug where a lock was reduced from 722 IPL_SCHED to IPL_VM (?) and occasionally savefpstate IPI 723 would crash due to NULL IPI. This was fixed by re-using the 724 right IPL value. However, GCC 4.5.3 build kernels have the 725 same problems. For now, the hack is re-instated. 726 kcah 727 728 729 port mips 730 731 hack mips-shared-linker-load-address 732 cdate Fri Oct 7 08:33:10 UTC 2005 733 who simonb 734 file src/sys/kern/exec_elf32.c : 1.107 735 descr 736 With COMPAT_16 or previous enabled (which enables 737 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 738 load and run at address 0. The check to fix this in 739 rev 1.107 only checks the first psection of the ELF 740 executable, which may not be loadable. A more correct 741 fix is to check the first loadable psection instead of 742 just the first psection. 743 kcah 744 745 hack mips-duplicate-ras-end-label 746 cdate Sat Sep 2 23:29:42 2006 747 who martin 748 file src/regress/sys/kern/ras/ras3/Makefile : 1.3 749 descr 750 Add -fno-reorder-blocks to CFLAGS to avoid duplicate 751 labels by duplicated __asm output from RAS_END() 752 macro. 753 kcah 754 755 hack mips-mcount-assembler-warning 756 cdate Tue Jul 29 14:16:52 UTC 2008 757 who lukem 758 file src/lib/libc/gmon/Makefile.inc : 1.8 759 descr 760 Workaround for PR port-mips/39192. 761 common/lib/libc/gmon/mcount.c generates a (fatal) 762 assembler warning on MIPS: 763 Warning: No .cprestore pseudo-op used in PIC code 764 Add COPTS.count.c+=-Wa,--no-warn to avoid -Wa,--fatal-warnings 765 kcah 766 767 port i386 768 769 hack use volatile intermediate variable to enforce rounding 770 cdate Tue Aug 1 22:15:55 MEST 2006 771 who drochner 772 file src/lib/libm/src/lrintf.c : 1.4 773 file src/lib/libm/src/s_rintf.c : 1.8 774 descr 775 gcc-4 does subsequent operations on "float" values within 776 the i387 FPU without rounding the intermediate results 777 kcah 778 779 port x86 780 hack turn off optimization for biosdisk_ll.c because otherwise 781 we are pass the wrong arguments to biosdisk_read(). 782 $ cd /usr/src/sys/arch/i386/floppies/bootflopp-com 783 $ qemu-system-i386 -nographic -fda boot-com1.fs -boot a 784 who christos 785 file src/sys/arch/i386/stand/lib/Makefile : 1.38 786 descr 787 Turning on DISK_DEBUG shows the problem. We should find 788 out which option is causing this. 789 hcah 790 791 port powerpc 792 793 hack avoid using __builtin_return_address(0) because it fails in 794 Xorg's module loader 795 cdate Sat Sep 27 03:52:05 UTC 2008 796 who macallan 797 file src/libexec/ld.elf_so/rtld.c : 1.121 798 descr 799 workaround for PR port-macppc/37812 800 kcah 801 802 hack define TARGET_SECURE_PLT and HAVE_AS_TLS because when 803 building the native compiler via build.sh those don't defined 804 properly. 805 cdate Sat Mar 12 08:00:00 UTC 2011 806 who matt 807 file src/gnu/dist/gcc4/gcc/config/rs6000/netbsd.h 808 descr 809 see above 810 kcah 811 812 port powerpc64 813 814 hack include _errno.c in libposix so that __errno resolves. It 815 should resolve from libc's errno, but somehow it does not. 816 Linker bug? 817 cdate Thu Oct 27 13:19:47 EDT 2011 818 who christos 819 file src/lib/libposix/Makefile: 1.15 820 file src/lib/librt/Makefile: 1.14 821 descr 822 workaround for: 823 libposix_pic.a(cerror.pico)(.text+0x14): unresolvable \ 824 R_PPC64_REL24 relocation against symbol `.__errno' 825 kcah 826 827 hack rename data() function in mdocml to avoid redefined error. 828 Compiler/Assembler bug? 829 cdate Sat Oct 29 11:16:01 EDT 2011 830 who christos 831 file src/external/bsd/mdocml/tbl_data.c: 1.2 832 descr 833 workaround for: 834 {standard input}: Assembler messages: 835 {standard input}:105: Error: symbol `.data' is already \ 836 defined 837 kcah 838 839 port emips 840 841 hack Add nop between ctc1 and mtc0 to avoid assembler internal 842 error 843 cdate Sat Oct 29 16:57:34 EDT 2011 844 who christos 845 file src/sys/arch/mips/mips/mips_fpu.c: 1.7 846 descr 847 workaround for: 848 {standard input}: Assembler messages: 849 {standard input}:730: Internal error! 850 Assertion failure in append_insn at /usr/src/external/gpl3/\ 851 binutils/dist/gas/config/tc-mips.c line 2910. 852 kcah 853 854 port ia64 855 856 hack libc hesiod.c file does not compile with -O2 (internal 857 compiler error in gcc 4.5.3) 858 cdate Thu Dec 27 08:05:43 CET 2012 859 who martin 860 file src/lib/libc/net/Makefile.inc: 1.82 861 descr 862 workaround for: 863 {standard input}: Assembler messages: 864 {standard input}:1507: Warning: Use of 'mov' may violate WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 15 865 {standard input}:1506: Warning: This is the location of the conflicting usage 866 {standard input}: Error: 2 warnings, treating warnings as errors 867 kcah 868 869 hack libelf libelf_extended.c compiler error in gcc 4.5.3 870 cdate Thu Dec 27 09:05:51 CET 2012 871 who martin 872 file src/external/bsd/libelf/lib/Makefile: 1.3 873 descr 874 workaround for: 875 {standard input}: Assembler messages: 876 {standard input}:87: Warning: Use of 'adds' may violate RAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 33 877 {standard input}:87: Warning: Only the first path encountering the conflict is reported 878 {standard input}:85: Warning: This is the location of the conflicting usage 879 kcah 880 881 hack compiler error with gcc 4.5.x 882 cdate Thu Dec 27 15:15:25 CET 2012 883 who martin 884 file src/crypto/external/bsd/netpgp/lib/verify/Makefile: 1.5 885 descr 886 workaround for: 887 {standard input}: Assembler messages: 888 {standard input}:22979: Warning: Use of 'mov' may violate WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 8 889 {standard input}:22978: Warning: This is the location of the conflicting usage 890 kcah 891 892 hack libgcc unwind dummy function 893 cdate Fri Apr 17 14:31:03 CEST 2015 894 who martin 895 file src/external/gpl3/gcc/dist/libgcc/config/ia64/unwind-ia64.c: 1.4 896 descr 897 Add an empty _Unwind_FindTableEntry() implementation. 898 In the end we will use our libc stuff, and this should 899 go away again. 900 kcah 901 902 port x68k 903 904 hack compiler error with gcc 4.5.x 905 cdate Fri May 24 13:23:01 EDT 2013 906 who christos 907 file src/external/gpl3/gcc/usr.bin/bakend/Makefile: 1.17 908 xsrc/external/mit/xorg/lib/libGLU/Makefile: 1.11 909 descr 910 workaround for: 911 internal compiler error: in cselib_record_set, at cselib.c:1999 912 kcah 913 914 hack fallback to /usr/bin/clang-cpp in rpcgen 915 cdate Wed Jun 5 15:49:27 CEST 2013 916 who joerg 917 file src/usr.bin/rpcgen/rpc_main.c 918 descr 919 It is undecided which compiler owns /usr/bin/cpp and whether it should 920 exist in a MKGCC=no world. To allow rpcgen to work out-of-the-box, 921 if either gcc or clang is installed, use /usr/bin/clang-cpp as fallback. 922 This applies only if RPCGEN_CPP is not set and /usr/bin/cpp is not executable. 923 kcah 924 925 port hppa 926 927 hack compiler error with gcc 4.5.x 928 cdate Tue Jul 23 07:42:28 BST 2013 929 who skrll 930 file src/sys/lib/libkern/Makefile.libkern: 1.26 931 descr 932 workaround for unanalysed codegen bug affecting md5c.c. 933 kcah 934 935 hack gdb vs _rtld_debug_state problem 936 cdate Thu Mar 5 09:49:53 UTC 2015 937 who skrll 938 file src/libexec/ld.elf_so/rtld.c: 1.175 939 descr 940 workaround for problem where gdb misses the breakpoint on 941 _rtld_debug_state when the function is only the 942 bv,n %r0(%rp) instruction - the nullify seems to 943 confuse something 944 kcah 945 946 port mips64* 947 hack compiler crashes on mips64* with optimization enabled 948 cdate Tue May 13 18:46:48 UTC 2014 949 who macallan 950 file src/external/lgpl3/gmp/lib/libgmp/arch/mips64eb/Makefile.inc: 1.6 951 src/external/lgpl3/gmp/lib/libgmp/arch/mips64eb/config.h: 1.5 952 src/external/lgpl3/gmp/lib/libgmp/arch/mips64el/Makefile.inc: 1.6 953 src/external/lgpl3/gmp/lib/libgmp/arch/mips64el/config.h: 1.5 954 descr workaround for n32 gcc doing unaligned 64bit accesses when optimizing 955 pr 48696 956 kcah 957 958 port vax 959 hack compile boot with -O1 960 cdate Sat May 24 09:40:58 CEST 2014 961 who martin 962 file src/sys/arch/vax/boot/boot/Makefile: 1.41 963 descr /boot does not work when compiled with -O2 and gcc 4.8 964 kcah 965 966 port arm 967 hack avoid using labels in a 12-bit constant. 968 who matt 969 file crypto/external/bsd/openssl/lib/libcrypto/arch/arm/aes-armv4.S: 1.2 970 descr workaround for clang misassembling an instruction 971 kcah 972 973 port sparc64 974 hack during profiling with -m32 (and ASLR) labels are not generated 975 consistently 976 who christos 977 file /cvsroot/src/crypto/external/bsd/heimdal/lib/libasn1/Makefile: 1.4 978 desc asn1_krb5_asn1.po does not produce the same results during successive 979 compilation runs; it is bimodal. Turning optimization to -O0 fixes 980 the issue 981 kcah 982
Indexes created Wed Nov 05 19:10:08 GMT 2025