HACKS revision 1.110.2.1
1# $NetBSD: HACKS,v 1.110.2.1 2008/11/20 02:56:40 snj 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 30hack netstat ieee1394 address printing. 31mdate 14 Nov 2000 32who matt 33file lib/libc/net/getnameinfo.c : 1.32 : 497 : 503 34descr 35 Because the current implementation of IP over IEEE1394, the 36 fw device address contains more than just the IEEE1394 EUI-64. 37 So when printing out IEEE1394 addresses, ignore the extra stuff. 38kcah 39 40hack xterm vs. libterm 41mdate 01 Aug 2000 42who jdc 43file xsrc/xc/programs/xterm/main.c : 1.2 : 3609 : 3614 44pr 10383 45descr 46 In order to extend the termcap string over 1023 bytes, a ZZ entry was 47 introduced to point to a memory location containing the full entry. 48 Without this hack, xterm will export a termcap containing the ZZ 49 entry, which will then be ignored by libterm. As xterm modifies the 50 exported termcap, this would cause those modifications to be ignored. 51kcah 52 53hack wi-at-big-endian-bus 54cdate 15 Mar 2002 55who martin 56file dev/ic/wireg.h 57descr Add an option to access the underlying bus in big endian byte order 58 to work around deficiencies in bus_space_{read,write}_* macros. 59 Those don't allow the implementation of a proper pcmcia bus space 60 tag. 61kcah 62 63hack specific knowledge of colours in curses code 64cdate Sun Apr 6 11:05:24 BST 2003 65who jdc 66file lib/libcurses/color.c : r1.24 67descr 68 Swap red/blue and yellow/cyan colours for COLOR_OTHER. 69 Fix is to enhance libtermcap to understand terminfo-style % sequences. 70 See also: 71 http://mail-index.NetBSD.org/tech-userlevel/2003/04/06/0000.html 72kcah 73 74hack Compensation for differing types of LINUX_USRSTACK and USRSTACK 75cdate 21 Aug 2003 76who he 77file sys/miscfs/procfs/procfs_linux.c : 1.14 78descr 79 Not all ports have LINUX_USRSTACK and/or USRSTACK defined as 80 literals/constants, but refer to variables of a type which is 81 not "unsigned long", causing compilation of procfs_linux.c to 82 fail with "makes integer from pointer without a cast". This 83 is observed on e.g. the sun3 port. Ideally the "types" for 84 symbols should be consistent across all ports. 85kcah 86 87hack gcc-strict-aliasing 88cdate 6 August 2004 89who junyoung 90pr 26516 91file src/usr.sbin/racoon/racoon/Makefile : 1.21 92descr 93 GCC issues a warning "dereferencing type-punned pointer will break 94 strict-aliasing rules" when compiling 95 crypto/dist/kame/racoon/crypto/openssl.c with -O[23s]. Note that this 96 is due to use of type casting in a non-standard way in the code and 97 not a compiler bug. Once a new release of KAME with a proper fix 98 applied is imported this should be backed out. 99kcah 100 101hack gcc4 wrong uninitialized variable 102mdate 10 May 2006 103who mrg 104file bin/ksh/eval.c : 1.6 105file bin/sh/histedit.c : 1.39 106file bin/sh/parser.c : 1.60 107file crypto/dist/heimdal/kdc/524.c : 1.10 108file crypto/dist/ssh/sftp.c : 1.20 109file crypto/dist/ssh/ssh-keysign.c : 1.11 110file dist/ipf/lib/hostname.c : 1.2 111file dist/ipf/tools/ipmon.c : 1.8 112file dist/ntp/ntpd/ntp_request.c : 1.4 113file dist/ntp/ntpd/refclock_shm.c : 1.4 114file dist/ntp/sntp/timing.c : 1.3 115file dist/pppd/pppstats/pppstats.c : 1.3 116file dist/smbfs/lib/smb/rap.c : 1.6 117file dist/tcpdump/print-zephyr.c : 1.5 118file distrib/utils/sysinst/aout2elf.c : 1.12 119file gnu/libexec/uucp/uucico/uucico.c : 1.6 120file lib/libc/citrus/citrus_csmapper.c : 1.6 121file lib/libc/citrus/citrus_pivot_factory.c : 1.5 122file lib/libc/inet/inet_cidr_ntop.c : 1.3 123file lib/libc/inet/inet_ntop.c : 1.3 124file lib/libc/stdio/vfwprintf.c : 1.8 125file libexec/ld.elf_so/arch/m68k/mdreloc.c : 1.20 126file libexec/ld.elf_so/arch/powerpc/ppc_reloc.c : 1.40 127file libexec/ld.elf_so/arch/sh3/mdreloc.c : 1.22 128file libexec/ld.elf_so/arch/sparc/mdreloc.c : 1.39 129file libexec/ld.elf_so/arch/sparc64/mdreloc.c : 1.39 130file libexec/ld.elf_so/arch/vax/mdreloc.c : 1.21 131file libexec/ld.elf_so/arch/x86_64/mdreloc.c : 1.27 132file sbin/fsck_ext2fs/dir.c : 1.19 133file sbin/routed/rtquery/rtquery.c : 1.18 134file sys/arch/amd64/amd64/pmap.c : 1.26 135file sys/arch/i386/pci/piixpcib.c : 1.4 136file sys/arch/m68k/m68k/pmap_motorola.c : 1.4 137file sys/crypto/cast128/cast128.c : 1.9 138file sys/ddb/db_command.c : 1.86 139file sys/dev/cardbus/cardbus_map.c : 1.21 140file sys/dev/fss.c : 1.25 141file sys/dev/ic/igsfb.c : 1.39 142file sys/dev/ic/mb86950.c : 1.5 143file sys/dev/ic/midway.c : 1.71 144file sys/dev/kttcp.c : 1.18 145file sys/dev/rasops/rasops_bitops.h : 1.9 146file sys/dev/pci/cmpci.c : 1.31 147file sys/dev/pci/machfb.c : 1.45 148file sys/dev/usb/ohci.c : 1.174 149file sys/dev/usb/uhci.c : 1.196 150file sys/dev/rasops/rasops_bitops.h : 1.9 151file sys/dist/ipf/netinet/ip_nat.c : 1.10 152file sys/dist/ipf/netinet/ip_rpcb_pxy.c : 1.8 153file sys/dist/pf/net/pf.c : 1.22 154file sys/fs/udf/udf_vnops.c : 1.4 155file sys/kern/kern_sig.c : 1.219 156file sys/kern/tty.c : 1.181 157file sys/net/bpf.c : 1.116 158file sys/net/zlib.c : 1.26 159file sys/netccitt/if_x25subr.c : 1.37 160file sys/netinet/in.c : 1.107 161file sys/netsmb/smb_smb.c : 1.27 162file sys/netsmb/smb_trantcp.c : 1.22 163file sys/nfs/nfs_serv.c : 1.108 164file sys/nfs/nfs_socket.c : 1.129 165file sys/nfs/nfs_syscalls.c : 1.91 166file sys/ufs/lfs/lfs_vfsops.c : 1.207 [also (char *)] 167file usr.bin/ftp/ftp.c : 1.140 168file usr.bin/find/function.c : 1.54 169file usr.bin/mail/tty.c : 1.20 170file usr.bin/msgc/msg_sys.def : 1.33-1.34 171file usr.bin/nl/nl.c : 1.7 172file usr.bin/systat/keyboard.c : 1.23 173file usr.bin/usbhidctl/usbhid.c : 1.29 174file usr.bin/vi/cl/cl_read.c : 1.5 175file usr.bin/vi/ex/ex_cscope.c : 1.12 176file usr.bin/vi/ex/ex_tag.c : 1.19 177file usr.bin/vi/vi/v_txt.c : 1.15 178file usr.sbin/altq/altqstat/qdisc_rio.c : 1.4 179file usr.sbin/cron/do_command.c : 1.19 180file usr.sbin/timed/timed/slave.c : 1.15 181descr 182 GCC 4.1 gets many uninitialised variable warnings wrong. We should 183 really audit all the old hacks like this when older compilers are 184 removed from the tree, as many are probably no longer required. 185 The problem is that it does not recognize initialization via function 186 call pointer. I.e. 187 int p; 188 foo(&p); 189 does not mark p as initialized. 190kcah 191 192hack gcc4 pointer sign and strict aliasing problems 193mdate 10 May 2006 194who mrg 195file bin/ed/Makefile : 1.33 196file distrib/utils/sysinst/Makefile.inc : 1.44 197file distrib/utils/x_dhclient/Makefile : 1.15 198file games/bcd/Makefile : 1.5 199file games/dab/Makefile : 1.5 200file games/larn/Makefile : 1.17 201file games/pom/Makefile : 1.5 202file lib/libasn1/Makefile : 1.26 203file lib/libcrypt/Makefile : 1.17 204file lib/libgssapi/Makefile : 1.16 205file lib/libhdb/Makefile : 1.20 206file lib/libkadm5clnt/Makefile : 1.21 207file lib/libkadm5srv/Makefile : 1.25 208file lib/libkrb5/Makefile : 1.35 209file lib/libssh/Makefile : 1.6 210file lib/libtelnet/Makefile : 1.26 211file libexec/getty/Makefile : 1.14 212file libexec/kadmind/Makefile : 1.19 213file libexec/kpasswdd/Makefile : 1.14 214file sbin/atactl/Makefile : 1.3 215file sbin/cgdconfig/Makefile : 1.7 216file sbin/clri/Makefile : 1.13 217file sbin/dkctl/Makefile : 1.4 218file sbin/dump/Makefile : 1.33 219file sbin/fdisk/Makefile : 1.35 220file sbin/fsck_ext2fs/Makefile : 1.11 221file sbin/fsck_ffs/Makefile : 1.29 222file sbin/fsdb/Makefile : 1.18 223file sbin/mount_smbfs/Makefile : 1.4 224file sbin/newfs/Makefile : 1.30 225file sbin/newfs_sysvbfs/Makefile : 1.2 226file sbin/restore/Makefile : 1.23 227file sbin/veriexecctl/Makefile : 1.11 228file sys/lib/libsa/Makefile : 1.59 229file sys/arch/evbarm/adi_brh/brh_machdep.c : 1.24 230file usr.bin/awk/Makefile : 1.9 231file usr.bin/crontab/Makefile : 1.24 232file usr.bin/ctags/Makefile : 1.8 233file usr.bin/gzip/Makefile : 1.10 234file usr.bin/ssh/sftp/Makefile : 1.10 235file usr.bin/ssh/ssh/Makefile : 1.25 236file usr.bin/vi/build/Makefile : 1.26 237file usr.bin/telnet/Makefile : 1.40 238file usr.bin/tn3270/tn3270/Makefile : 1.36 239file usr.bin/tr/Makefile : 1.4 240file usr.sbin/amd/amd/Makefile : 1.27 241file usr.sbin/amd/amq/Makefile : 1.14 242file usr.sbin/amd/libamu/Makefile : 1.20 243file usr.sbin/amd/pawd/Makefile : 1.5 244file usr.sbin/bind/Makefile.inc : 1.22 245file usr.sbin/bind/libdns/Makefile : 1.3 246file usr.sbin/bind/named/Makefile : 1.17 247file usr.sbin/bootp/bootptest/Makefile : 1.2 248file usr.sbin/chrtbl/Makefile : 1.6 249file usr.sbin/cron/Makefile : 1.12 250file usr.sbin/dhcp/Makefile.inc : 1.20 251file usr.sbin/dumplfs/Makefile : 1.11 252file usr.sbin/hprop/Makefile : 1.13 253file usr.sbin/installboot/Makefile : 1.35 254file usr.sbin/ipf/ipftest/Makefile : 1.32 255file usr.sbin/isdn/isdnd/Makefile : 1.6 256file usr.sbin/isdn/isdnmonitor/Makefile : 1.3 257file usr.sbin/isdn/isdntel/Makefile : 1.2 258file usr.sbin/isdn/isdntrace/Makefile : 126 259file usr.sbin/mopd/common/Makefile : 1.10 260file usr.sbin/mopd/mopd/Makefile : 1.9 261file usr.sbin/mopd/mopprobe/Makefile : 1.7 262file usr.sbin/makefs/Makefile : 1.17 263file usr.sbin/mscdlabel/Makefile : 1.5 264file usr.sbin/pkg_install/add/Makefile : 1.7 265file usr.sbin/pkg_install/create/Makefile : 1.5 266file usr.sbin/pkg_install/lib/Makefile : 1.28 267file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11 268file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5 269file usr.sbin/pppd/Makefile.inc : 1.3 270file usr.sbin/pppd/pppd/Makefile : 1.38 271file usr.sbin/rarpd/Makefile : 1.10 272file usr.sbin/rbootd/Makefile : 1.10 273file usr.sbin/rpc.pcnfsd/Makefile : 1.17 274file usr.sbin/rtadvd/Makefile : 1.9 275file usr.sbin/tcpdump/Makefile : 1.42 276file usr.sbin/wiconfig/Makefile : 1.3 277descr 278 GCC 4.1 warns on pointer sign comparision/assignments and lots of 279 code does not conform. For now we use -Wno-pointer-sign and 280 -fno-strict-aliasing. 281kcah 282 283hack cross-building hack on Darwin 284mdate 20 July 2008 285who agc 286file src/distrib/common/Makefile.mdset : 1.33 287descr 288 Darwin has problems with getopt() when used in mdsetimage -v, 289 due to the difference between BSD and libiberty() getopt 290 implementations, more fully described in 291 http://mail-index.netbsd.org/current-users/2008/06/27/msg003242.html 292 and the subsequent thread. For just now, we just have an ugly 293 workaround not to call mdsetimage with the -v argument on Darwin 294kcah 295 296hack avoid rebuilding asn1 libraries 297mdate 03 August 2008 298who veego 299file src/crypto/dist/heimdal/lib/asn1/gen.c : 1.10 300file src/lib/libasn1/Makefile : 1.32 301file src/lib/libhdb/Makefile : 1.23 302file src/lib/libgssapi/Makefile : 1.20 303file src/lib/libhx509/Makefile : 1.3 304pr 9702 39185 305descr 306 asn1_compile does not check if generated header files do not have to 307 be rebuild. 308 Generate .hx files and copy it in the Makefiles if they changed. 309kcah 310 311hack rbus resource allocation work around 312cdate 10 May 2007 313who jnemeth 314file src/sys/dev/pcmcia/aic_pcmcia.c : 1.35 315pr 26909 31245 316descr 317 On some cards, the card align field property value interferes 318 with the rbus resource allocation causing the card not to 319 configure properly. Setting it to 0 fixes the problem but it 320 is not the proper solution. 321kcah 322 323port vax 324 325 hack gcc4/vax ICE 326 cdate 327 who tsutsui 328 file sys/arch/vax/conf/Makefile.vax 329 descr 330 GCC4 on vax gets ICE on compiling sys/ddb/db_command.c. 331 -fno-tree-ter prevents it so add it to COPTS. 332 kcah 333 334 hack gcc4/vax compiler crash 335 cdate Fri Jun 30 22:39:12 PDT 2006 336 who mrg 337 file bin/csh/Makefile : 1.27 338 file lib/i18n_module/UTF7/Makefile : 1.2 339 descr 340 GCC4 on vax crashes. -O0 stops it happening so far... 341 kcah 342 343 hack gcc 2.95/vax doesn't like abort being used as function pointer 344 cdate Tue Dec 13 05:54:50 GMT 2005 345 who jmc 346 file lib/libc/rpc/svc_vc.c 1.15 347 descr 348 Provide a local definition for abort which doesn't include 349 the noreturn attribute which trips up gcc 2.95 on vax. 350 kcah 351 352 hack gcc 2.95/vax doesn't have stdbool.h and gettext needs it 353 cdate Mon May 9 12:16:22 CDT 2005 354 who jmc 355 file gnu/usr.bin/gettext/Makefile.inc.prog 1.5 356 gnu/usr.bin/gettext/libgrep/Makefile 1.3 357 gnu/usr.bin/gettext/libnlspr/Makefile 1.5 358 gnu/usr.bin/gettext/libnlsut/Makefile 1.3 359 descr 360 The latest gettext assumes a C99 environment or at least 361 configure checks to work around this. As we don't use configure 362 provide a stdbool.h for vax builds locally in directories from 363 the template provided by the gettext code. 364 kcah 365 366 hack gcc 2.95/vax cannot handle __builtin_ffs() 367 cdate Fri Aug 23 21:31:15 CEST 2002 368 who ragge 369 file sys/lib/libkern/libkern.h : 1.42 370 descr 371 __builtin_ffs() is ifdef'd away if __vax__. Matt Thomas has 372 added this feature to GCC 3 so it can be removed when switching. 373 kcah 374 375 hack gcc 2.95/vax libbz2 376 mdate 27 Jun 2002 377 who thorpej 378 file lib/libbz2/Makefile 379 descr 380 libbz2 is mis-compiled with optimization with GCC 2.95.3 381 on VAX. -O0 works around this problem. 382 kcah 383 384 hack vax Toolchain bug 385 cdate 28 Mar 2003 386 who he 387 file sys/arch/vax/vax/intvec.S : 1.5 388 descr 389 Workaround for PR toolchain/20924. The assembler apparently 390 tries to range-check byte offsets when it doesn't have 391 sufficient information to make that decision. 392 Workaround uses `brw' instead of `brb' instruction. 393 kcah 394 395 hack vax gcc 2.95.3 -Wuninitialized workarounds 396 cdate 6 Nov 2003 397 who he 398 file sys/dev/bi/if_ni.c : 1.22 399 file sys/arch/vax/vax/ctu.c : 1.20 400 descr 401 Workaround for gcc 2.95.3 failing to detect that certain 402 variables will be initialized; so that this code compiles 403 with -Wuninitialized. Should be reviewed and possibly 404 reverted when gcc 3.3.2 is ready for vax. 405 kcah 406 407 hack vax gcc 2.95.3 structure initialization 408 cdat 13 May 2004 409 who cl 410 file sys/miscfs/kernfs/kernfs_vnops.c : 1.104 411 descr 412 Workaround for gcc 2.95.3 failing to initialize structures 413 and/or unions inside structures using nested designators. 414 Should be reverted when gcc >=3.3.3 is ready for vax. 415 kcah 416 417 hack vax gcc 2.95.3 needs -I. to build nslexer.c 418 cdat 6 Jun 2004 419 who mhitch 420 file lib/libc/arch/vax/Makefile.inc : 1.6 421 descr 422 It appears necessary to add -I. to CPPFLAGS when building 423 nslesxer.c. This may be caused by gcc 2.95.3 being used. 424 Should be reverted when a newer gcc is ready for vax. 425 kcah 426 427 hack vax gcc 2.95.3 doesn't understand "-std=c99" 428 cdat 5 April 2005 429 who tron 430 file src/share/mk/bsd.sys.mk 431 descr 432 We cannot use "-std=c99" for compiler warning level 4 and above 433 because gcc 2.95.3 doesn't support that option. 434 kcah 435 436 hack declare boolean_t in two IPF user-mode programs 437 cdate Tue Mar 7 19:19:20 CET 2006 438 who he 439 file dist/ipf/ipsend/iptests.c : 1.8 440 dist/ipf/ipsend/sock.c : 1.7 441 descr 442 The IPF user-mode programs ipsend and iptest first 443 include <sys/types.h> without _KERNEL defined, and 444 later include <sys/file.h> with _KERNEL defined. 445 This causes a build failure when building for vax, 446 since <sys/device.h> ends up being included without 447 bollean_t being defined by <sys/types.h>. 448 Build failure and further details documented in 449 PR#32907. 450 kcah 451 452 hack pcc 0.9.9 large string literals 453 cdat 8 July 2008 454 who gmcgarry 455 file sys/conf/param.c : 1.58 456 descr 457 Workaround for pcc 0.9.9 not handling large string literals 458 which causes kernels with 'options INCLUDE_CONFIG_FILE' to 459 fail compilation. 460 There is a proposal on the pcc mailing list to stuff config 461 file in ELF section. 462 kcah 463 464 hack xorg warnings 465 cdat 30 July 2008 466 who mrg 467 file external/mit/xorg/lib/libSM/Makefile : 1.2 468 external/mit/xorg/lib/libX11/Makefile.libx11 : 1.2 469 external/mit/xorg/lib/libXext/Makefile : 1.2 470 external/mit/xorg/lib/libXfont/Makefile : 1.2 471 descr 472 Disable several warnings or use -Wno-error across Xorg sources 473 while we get them working 474 kcah 475 476port arm 477 478 hack gcc-unsigned-compare 479 cdate 09 Mar 2002 480 mdate 18 Mar 2002 481 who bjh21 482 file dist/bind/lib/nameser/ns_parse.c : 1.3 483 file dist/dhcp/minires/ns_parse.c : 1.3 484 file dist/dhcp/omapip/result.c : 1.2 485 file dist/dhcp/server/failover.c : 1.3 486 file gnu/dist/toolchain/bfd/bfd.c : 1.2 487 file gnu/dist/toolchain/bfd/format.c : 1.2 488 file gnu/dist/toolchain/gdb/target.c : 1.2 489 file sys/kern/vfs_subr.c : 1.172 490 descr When checking that a potentially-unsigned enum is >= 0, assign 491 it to an int first. This is necessary to avoid "comparison is 492 always true" warnings with -fshort-enums. Casting to an int 493 really should be enough, but turns out not to be. 494 kcah 495 496 497port sh3 498 499 hack gcc4-sh3-bz2 500 cdate Sun May 21 03:34:57 UTC 2006 501 mdate Fri May 16 13:13:00 UTC 2008 502 who mrg, tsutsui 503 file lib/libbz2/Makefile : 1.10 504 descr 505 The in-tree GCC 4.1-based compiler generated too-far 506 pc-relative addresses. Hack is to build with 507 -fno-loop-optimize. 508 kcah 509 510 511port m68000 512 513 hack gcc4-m68000 514 cdate Fri Feb 8 10:29:37 PST 2008 515 mdate Sun May 4 15:37:19 UTC 2008 516 who mrg, tsutsui 517 file rescue/Makefile : 1.21 518 file sbin/dump_lfs/Makefile : 1.9 519 file sbin/fsck_ffs/Makefile : 1.35 520 file sbin/fsdb/Makefile : 1.22 521 file share/mk/sys.mk : 1.96 522 file usr.sbin/ndbootd/Makefile : 1.5 523 descr 524 Several internal compiler errors with gcc -O1 525 around 64bit integer arithmetic. 526 This hack uses -O1 and adds some -fno-tree-foo options 527 to avoid the problem. 528 This might be related with GCC Bugzilla Bug 32424. 529 kcah 530 531 532port sparc64 533 534 hack disable optimzations for uvm_bio.c on 32 bit kernels 535 cdate Sun Mar 21 14:14:04 MET 2004 536 who martin 537 file sys/arch/sparc64/conf/Makefile.sparc64 : 1.53-1.54 538 file sys/arch/sparc64/conf/files.sparc64 : 1.93 539 descr 540 The sparc compiler miscompiles uvm_bio.c when using 541 any optimization. This results in ubc_release panics. 542 kcah 543 544port mips 545 546 hack mips-shared-linker-load-address 547 cdate Fri Oct 7 08:33:10 UTC 2005 548 who simonb 549 file src/sys/kern/exec_elf32.c : 1.107 550 descr 551 With COMPAT_16 or previous enabled (which enables 552 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 553 load and run at address 0. The check to fix this in 554 rev 1.107 only checks the first psection of the ELF 555 executable, which may not be loadable. A more correct 556 fix is to check the first loadable psection instead of 557 just the first psection. 558 kcah 559 560 hack mips-duplicate-ras-end-label 561 cdate Sat Sep 2 23:29:42 2006 562 who martin 563 file src/regress/sys/kern/ras/ras3/Makefile : 1.3 564 descr 565 Add -fno-reorder-blocks to CFLAGS to avoid duplicate 566 labels by duplicated __asm output from RAS_END() 567 macro. 568 kcah 569 570 hack mips-mcount-assembler-warning 571 cdate Tue Jul 29 14:16:52 UTC 2008 572 who lukem 573 file src/lib/libc/gmon/Makefile.inc : 1.8 574 descr 575 Workaround for PR port-mips/39192. 576 common/lib/libc/gmon/mcount.c generates a (fatal) 577 assembler warning on MIPS: 578 Warning: No .cprestore pseudo-op used in PIC code 579 Add COPTS.count.c+=-Wa,--no-warn to avoid -Wa,--fatal-warnings 580 kcah 581 582port i386 583 584 hack use volatile intermediate variable to enforce rounding 585 cdate Tue Aug 1 22:15:55 MEST 2006 586 who drochner 587 file src/lib/libm/src/lrintf.c : 1.4 588 file src/lib/libm/src/s_rintf.c : 1.8 589 descr 590 gcc-4 does subsequent operations on "float" values within 591 the i387 FPU without rounding the intermediate results 592 kcah 593 594port powerpc 595 596 hack avoid using __builtin_return_address(0) because it fails in 597 Xorg's module loader 598 cdate Sat Sep 27 03:52:05 UTC 2008 599 who macallan 600 file src/libexec/ld.elf_so/rtld.c : 1.121 601 descr 602 workaround for PR port-macppc/37812 603 kcah 604 605