HACKS revision 1.179
1 # $NetBSD: HACKS,v 1.179 2017/02/14 09:00:03 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 to/from external 557 hosts via ssh fails. 558 kcah 559 560 port arm 561 562 hack gcc-unsigned-compare 563 cdate 09 Mar 2002 564 mdate 18 Mar 2002 565 who bjh21 566 file dist/bind/lib/nameser/ns_parse.c : 1.3 567 file dist/dhcp/minires/ns_parse.c : 1.3 568 file dist/dhcp/omapip/result.c : 1.2 569 file dist/dhcp/server/failover.c : 1.3 570 file gnu/dist/toolchain/bfd/bfd.c : 1.2 571 file gnu/dist/toolchain/bfd/format.c : 1.2 572 file gnu/dist/toolchain/gdb/target.c : 1.2 573 file sys/kern/vfs_subr.c : 1.172 574 descr When checking that a potentially-unsigned enum is >= 0, assign 575 it to an int first. This is necessary to avoid "comparison is 576 always true" warnings with -fshort-enums. Casting to an int 577 really should be enough, but turns out not to be. 578 kcah 579 580 hack gcc-4.5 arm CNAME hostname lookup failure on 581 certain DNS environment (probably -ftree-ter problem) 582 cdate Sat Dec 24 04:59:00 UTC 2011 583 mdate 584 who tsutsui 585 file lib/libc/net/Makefile.inc 1.79 586 descr Hostname lookup against CNAMEs by some commands fails 587 on certain DNS environments if lib/libc/net/gethnamaddr.c 588 (ping(8) etc) and lib/libc/net/getaddrinfo.c (ftp(1) etc) 589 are compiled with -O2, even though nslookup(1) against 590 the same CNAME returns proper hostname. 591 They works properly if compiled with -O2 -fno-tree-ter. 592 Also -O2 fails but -O2 -fno-tree-ter works on the following 593 test case in gcc bugzilla: 594 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48863#c4 595 kcah 596 597 hack gcc-4.5 arm without -fno-tree-vrp generate broken code 598 cdate Wed Nov 14 13:02:02 JST 2012 599 who msaitoh 600 file lib/libc/softfloat/Makefile.inc 601 pr 46953 602 regress src/tests/lib/libm/t_cbrt 603 regress src/tests/lib/libm/t_ceil 604 regress src/tests/lib/libm/t_exp 605 regress src/tests/lib/libm/t_log 606 regress src/tests/lib/libm/t_scalbn 607 regress src/tests/lib/libm/t_sinh 608 regress src/tests/lib/libm/t_sqrt 609 descr Gcc has a bug in tree optimization. For adddf3, 610 -INF + -INF returns 0 without -fno-tree-vrp. 611 Debugging with -fdump-tree-all shows that 612 softfloat.c.021t.cleanup_cfg is ok but softfloat.c.023t.ssa 613 is broken. 614 kcah 615 616 port sh3 617 618 hack gcc4-sh3-bz2 619 cdate Sun May 21 03:34:57 UTC 2006 620 mdate Fri May 16 13:13:00 UTC 2008 621 who mrg, tsutsui 622 file lib/libbz2/Makefile : 1.10 623 descr 624 The in-tree GCC 4.1-based compiler generated too-far 625 pc-relative addresses. Hack is to build with 626 -fno-loop-optimize. 627 kcah 628 629 port sh3eb 630 hack gcc4.8.1 631 cdate Thu Nov 7 16:31:23 EST 2013 632 who christos 633 file src/sys/rump/net/lib/libnetbt/Makefile : 1.2 634 desrc 635 for profiling 636 compile l2cap_signal.c with -O0 to avoid: 637 ./netbt/l2cap_signal.c:36: 638 /p/netbsd/cvsroot/src/sys/rump/net/lib/libnetbt/../../../../\ 639 netbt/l2cap_signal.c: In function 'l2cap_recv_signal': 640 ./sh3/byte_swap.h:20:2: error: 'asm' operand requires \ 641 impossible reload 642 __asm volatile ("swap.b %1,%0" : "=r"(rval) : "r"(x)); 643 kcah 644 645 port sh3el 646 hack gcc4.8.1 647 cdate Fri Nov 8 19:27:01 EST 2013 648 who christos 649 file src/external/bsd/libevent/lib/libevent/Makefile : 1.2 650 desrc 651 for profiling 652 compile evdns.c with -O0 to avoid: 653 ./sh3/byte_swap.h:20:2: error: 'asm' operand requires \ 654 impossible reload 655 __asm volatile ("swap.b %1,%0" : "=r"(rval) : "r"(x)); 656 kcah 657 658 hack gcc4.8.1 659 cdate Fri Nov 8 19:34:48 EST 2013 660 who christos 661 file src/usr.sbin/racoon/Makefile : 1.27 662 desrc 663 for profiling 664 compile ipsec_doi.c with -O0 to avoid: 665 ./sh3/byte_swap.h:20:2: error: 'asm' operand requires \ 666 impossible reload 667 __asm volatile ("swap.b %1,%0" : "=r"(rval) : "r"(x)); 668 kcah 669 670 port m68000 671 672 hack gcc4-m68000 673 cdate Fri Feb 8 10:29:37 PST 2008 674 mdate Sun May 4 15:37:19 UTC 2008 675 who mrg, tsutsui 676 file rescue/Makefile : 1.21 677 file sbin/dump_lfs/Makefile : 1.9 678 file sbin/fsck_ffs/Makefile : 1.35 679 file sbin/fsdb/Makefile : 1.22 680 file share/mk/sys.mk : 1.96 681 file usr.sbin/ndbootd/Makefile : 1.5 682 descr 683 Several internal compiler errors with gcc -O1 684 around 64bit integer arithmetic. 685 This hack uses -O1 and adds some -fno-tree-foo options 686 to avoid the problem. 687 This might be related with GCC Bugzilla Bug 32424. 688 kcah 689 690 port m68k,sh3,vax 691 692 hack gcc-4.8.1 693 cdate Wed Nov 6 20:41:35 EST 2013 694 who christos 695 file src/external/gpl3/gcc/libstdc++-v3/Makefile : 1.6 696 descr 697 compile hashtable_c++0x.cc with -O2 instead of -Os to 698 produce missing instantiation of std::lower_bound expansion 699 for unsigned long. 700 kcah 701 702 port sparc 703 704 hack avoid NULL pointer derefs in savefpstate IPIs and GCC 4.5.3 705 cdate Sun Aug 14 19:26:48 PDT 2011 706 who mrg 707 file sys/arch/sparc64/sparc/cpu.c : 1.234 708 file sys/arch/sparc64/sparc/cpuvar.h : 1.90 709 file sys/arch/sparc64/sparc/genassym.cf : 1.67 710 file sys/arch/sparc64/sparc/locore.s : 1.265 711 descr 712 Something is wrong with GCC 4.5.3 and the savefpstate IPI. 713 Post newlock2 there was a bug where a lock was reduced from 714 IPL_SCHED to IPL_VM (?) and occasionally savefpstate IPI 715 would crash due to NULL IPI. This was fixed by re-using the 716 right IPL value. However, GCC 4.5.3 build kernels have the 717 same problems. For now, the hack is re-instated. 718 kcah 719 720 721 port mips 722 723 hack mips-shared-linker-load-address 724 cdate Fri Oct 7 08:33:10 UTC 2005 725 who simonb 726 file src/sys/kern/exec_elf32.c : 1.107 727 descr 728 With COMPAT_16 or previous enabled (which enables 729 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 730 load and run at address 0. The check to fix this in 731 rev 1.107 only checks the first psection of the ELF 732 executable, which may not be loadable. A more correct 733 fix is to check the first loadable psection instead of 734 just the first psection. 735 kcah 736 737 hack mips-duplicate-ras-end-label 738 cdate Sat Sep 2 23:29:42 2006 739 who martin 740 file src/regress/sys/kern/ras/ras3/Makefile : 1.3 741 descr 742 Add -fno-reorder-blocks to CFLAGS to avoid duplicate 743 labels by duplicated __asm output from RAS_END() 744 macro. 745 kcah 746 747 hack mips-mcount-assembler-warning 748 cdate Tue Jul 29 14:16:52 UTC 2008 749 who lukem 750 file src/lib/libc/gmon/Makefile.inc : 1.8 751 descr 752 Workaround for PR port-mips/39192. 753 common/lib/libc/gmon/mcount.c generates a (fatal) 754 assembler warning on MIPS: 755 Warning: No .cprestore pseudo-op used in PIC code 756 Add COPTS.count.c+=-Wa,--no-warn to avoid -Wa,--fatal-warnings 757 kcah 758 759 port i386 760 761 hack use volatile intermediate variable to enforce rounding 762 cdate Tue Aug 1 22:15:55 MEST 2006 763 who drochner 764 file src/lib/libm/src/lrintf.c : 1.4 765 file src/lib/libm/src/s_rintf.c : 1.8 766 descr 767 gcc-4 does subsequent operations on "float" values within 768 the i387 FPU without rounding the intermediate results 769 kcah 770 771 port x86 772 hack turn off optimization for biosdisk_ll.c because otherwise 773 we are pass the wrong arguments to biosdisk_read(). 774 $ cd /usr/src/sys/arch/i386/floppies/bootflopp-com 775 $ qemu-system-i386 -nographic -fda boot-com1.fs -boot a 776 who christos 777 file src/sys/arch/i386/stand/lib/Makefile : 1.38 778 descr 779 Turning on DISK_DEBUG shows the problem. We should find 780 out which option is causing this. 781 hcah 782 783 port powerpc 784 785 hack avoid using __builtin_return_address(0) because it fails in 786 Xorg's module loader 787 cdate Sat Sep 27 03:52:05 UTC 2008 788 who macallan 789 file src/libexec/ld.elf_so/rtld.c : 1.121 790 descr 791 workaround for PR port-macppc/37812 792 kcah 793 794 hack define TARGET_SECURE_PLT and HAVE_AS_TLS because when 795 building the native compiler via build.sh those don't defined 796 properly. 797 cdate Sat Mar 12 08:00:00 UTC 2011 798 who matt 799 file src/gnu/dist/gcc4/gcc/config/rs6000/netbsd.h 800 descr 801 see above 802 kcah 803 804 port powerpc64 805 806 hack include _errno.c in libposix so that __errno resolves. It 807 should resolve from libc's errno, but somehow it does not. 808 Linker bug? 809 cdate Thu Oct 27 13:19:47 EDT 2011 810 who christos 811 file src/lib/libposix/Makefile: 1.15 812 file src/lib/librt/Makefile: 1.14 813 descr 814 workaround for: 815 libposix_pic.a(cerror.pico)(.text+0x14): unresolvable \ 816 R_PPC64_REL24 relocation against symbol `.__errno' 817 kcah 818 819 hack rename data() function in mdocml to avoid redefined error. 820 Compiler/Assembler bug? 821 cdate Sat Oct 29 11:16:01 EDT 2011 822 who christos 823 file src/external/bsd/mdocml/tbl_data.c: 1.2 824 descr 825 workaround for: 826 {standard input}: Assembler messages: 827 {standard input}:105: Error: symbol `.data' is already \ 828 defined 829 kcah 830 831 port emips 832 833 hack Add nop between ctc1 and mtc0 to avoid assembler internal 834 error 835 cdate Sat Oct 29 16:57:34 EDT 2011 836 who christos 837 file src/sys/arch/mips/mips/mips_fpu.c: 1.7 838 descr 839 workaround for: 840 {standard input}: Assembler messages: 841 {standard input}:730: Internal error! 842 Assertion failure in append_insn at /usr/src/external/gpl3/\ 843 binutils/dist/gas/config/tc-mips.c line 2910. 844 kcah 845 846 port ia64 847 848 hack libc hesiod.c file does not compile with -O2 (internal 849 compiler error in gcc 4.5.3) 850 cdate Thu Dec 27 08:05:43 CET 2012 851 who martin 852 file src/lib/libc/net/Makefile.inc: 1.82 853 descr 854 workaround for: 855 {standard input}: Assembler messages: 856 {standard input}:1507: Warning: Use of 'mov' may violate WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 15 857 {standard input}:1506: Warning: This is the location of the conflicting usage 858 {standard input}: Error: 2 warnings, treating warnings as errors 859 kcah 860 861 hack libelf libelf_extended.c compiler error in gcc 4.5.3 862 cdate Thu Dec 27 09:05:51 CET 2012 863 who martin 864 file src/external/bsd/libelf/lib/Makefile: 1.3 865 descr 866 workaround for: 867 {standard input}: Assembler messages: 868 {standard input}:87: Warning: Use of 'adds' may violate RAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 33 869 {standard input}:87: Warning: Only the first path encountering the conflict is reported 870 {standard input}:85: Warning: This is the location of the conflicting usage 871 kcah 872 873 hack compiler error with gcc 4.5.x 874 cdate Thu Dec 27 15:15:25 CET 2012 875 who martin 876 file src/crypto/external/bsd/netpgp/lib/verify/Makefile: 1.5 877 descr 878 workaround for: 879 {standard input}: Assembler messages: 880 {standard input}:22979: Warning: Use of 'mov' may violate WAW dependency 'GR%, % in 1 - 127' (impliedf), specific resource number is 8 881 {standard input}:22978: Warning: This is the location of the conflicting usage 882 kcah 883 884 hack libgcc unwind dummy function 885 cdate Fri Apr 17 14:31:03 CEST 2015 886 who martin 887 file src/external/gpl3/gcc/dist/libgcc/config/ia64/unwind-ia64.c: 1.4 888 descr 889 Add an empty _Unwind_FindTableEntry() implementation. 890 In the end we will use our libc stuff, and this should 891 go away again. 892 kcah 893 894 port x68k 895 896 hack compiler error with gcc 4.5.x 897 cdate Fri May 24 13:23:01 EDT 2013 898 who christos 899 file src/external/gpl3/gcc/usr.bin/bakend/Makefile: 1.17 900 xsrc/external/mit/xorg/lib/libGLU/Makefile: 1.11 901 descr 902 workaround for: 903 internal compiler error: in cselib_record_set, at cselib.c:1999 904 kcah 905 906 hack fallback to /usr/bin/clang-cpp in rpcgen 907 cdate Wed Jun 5 15:49:27 CEST 2013 908 who joerg 909 file src/usr.bin/rpcgen/rpc_main.c 910 descr 911 It is undecided which compiler owns /usr/bin/cpp and whether it should 912 exist in a MKGCC=no world. To allow rpcgen to work out-of-the-box, 913 if either gcc or clang is installed, use /usr/bin/clang-cpp as fallback. 914 This applies only if RPCGEN_CPP is not set and /usr/bin/cpp is not executable. 915 kcah 916 917 port hppa 918 919 hack compiler error with gcc 4.5.x 920 cdate Tue Jul 23 07:42:28 BST 2013 921 who skrll 922 file src/sys/lib/libkern/Makefile.libkern: 1.26 923 descr 924 workaround for unanalysed codegen bug affecting md5c.c. 925 kcah 926 927 hack gdb vs _rtld_debug_state problem 928 cdate Thu Mar 5 09:49:53 UTC 2015 929 who skrll 930 file src/libexec/ld.elf_so/rtld.c: 1.175 931 descr 932 workaround for problem where gdb misses the breakpoint on 933 _rtld_debug_state when the function is only the 934 bv,n %r0(%rp) instruction - the nullify seems to 935 confuse something 936 kcah 937 938 port mips64* 939 hack compiler crashes on mips64* with optimization enabled 940 cdate Tue May 13 18:46:48 UTC 2014 941 who macallan 942 file src/external/lgpl3/gmp/lib/libgmp/arch/mips64eb/Makefile.inc: 1.6 943 src/external/lgpl3/gmp/lib/libgmp/arch/mips64eb/config.h: 1.5 944 src/external/lgpl3/gmp/lib/libgmp/arch/mips64el/Makefile.inc: 1.6 945 src/external/lgpl3/gmp/lib/libgmp/arch/mips64el/config.h: 1.5 946 descr workaround for n32 gcc doing unaligned 64bit accesses when optimizing 947 pr 48696 948 kcah 949 950 port vax 951 hack compile boot with -O1 952 cdate Sat May 24 09:40:58 CEST 2014 953 who martin 954 file src/sys/arch/vax/boot/boot/Makefile: 1.41 955 descr /boot does not work when compiled with -O2 and gcc 4.8 956 kcah 957 958 port arm 959 hack avoid using labels in a 12-bit constant. 960 who matt 961 file crypto/external/bsd/openssl/lib/libcrypto/arch/arm/aes-armv4.S: 1.2 962 descr workaround for clang misassembling an instruction 963 kcah 964 965 port sparc64 966 hack during profiling with -m32 (and ASLR) labels are not generated 967 consistently 968 who christos 969 file /cvsroot/src/crypto/external/bsd/heimdal/lib/libasn1/Makefile: 1.4 970 desc asn1_krb5_asn1.po does not produce the same results during successive 971 compilation runs; it is bimodal. Turning optimization to -O0 fixes 972 the issue 973 kcah 974
Indexes created Thu Nov 06 17:09:51 GMT 2025