HACKS revision 1.97
1# $NetBSD: HACKS,v 1.97 2008/03/28 18:14:23 he 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 GCC2 isn't C99 88cdate 5 December 2003 89who mrg 90file gnu/dist/binutils/ld/ldlex.c: r1.2 91descr 92 ldlex.c is generated from ldlex.l and we get macro redefinition 93 errors from it if __STDC_VERSION__ is not C99 compliant. This 94 hack forces NetBSD 1.6 and later systems to also include <stdint.h> 95 to get the relevant definitions. This hack should be backed out 96 when all platforms have switched away from GCC2. 97kcah 98 99hack gcc-strict-aliasing 100cdate 6 August 2004 101who junyoung 102pr 26516 103file src/usr.sbin/racoon/racoon/Makefile : 1.21 104descr 105 GCC issues a warning "dereferencing type-punned pointer will break 106 strict-aliasing rules" when compiling 107 crypto/dist/kame/racoon/crypto/openssl.c with -O[23s]. Note that this 108 is due to use of type casting in a non-standard way in the code and 109 not a compiler bug. Once a new release of KAME with a proper fix 110 applied is imported this should be backed out. 111kcah 112 113hack gcc 3.3.3 wrong uninitialised variable 114mdate 12 May 2006 115who he 116file usr.bin/msgc/msg_sys.def : 1.33-1.34 117file distrib/utils/sysinst/aout2elf.c : 1.11 118descr 119 Gcc 3.3.3 gets some -Wuninitialized warnings wrong. This is 120 just one of many in the tree, marked with 121 /* XXX -Wuninitialized [arch] */ 122 in the source. 123kcah 124 125hack gcc4 wrong uninitialized variable 126mdate 10 May 2006 127who mrg 128file bin/ksh/eval.c : 1.6 129file bin/sh/histedit.c : 1.39 130file bin/sh/parser.c : 1.60 131file crypto/dist/heimdal/kdc/524.c : 1.10 132file crypto/dist/ssh/sftp.c : 1.20 133file crypto/dist/ssh/ssh-keysign.c : 1.11 134file dist/ipf/lib/hostname.c : 1.2 135file dist/ipf/tools/ipmon.c : 1.8 136file dist/ntp/ntpd/ntp_request.c : 1.4 137file dist/ntp/ntpd/refclock_shm.c : 1.4 138file dist/ntp/sntp/timing.c : 1.3 139file dist/pppd/pppstats/pppstats.c : 1.3 140file dist/smbfs/lib/smb/rap.c : 1.6 141file dist/tcpdump/print-zephyr.c : 1.5 142file distrib/utils/sysinst/aout2elf.c : 1.12 143file gnu/libexec/uucp/uucico/uucico.c : 1.6 144file lib/libc/citrus/citrus_csmapper.c : 1.6 145file lib/libc/citrus/citrus_pivot_factory.c : 1.5 146file lib/libc/inet/inet_cidr_ntop.c : 1.3 147file lib/libc/inet/inet_ntop.c : 1.3 148file lib/libc/stdio/vfwprintf.c : 1.8 149file libexec/ld.elf_so/arch/m68k/mdreloc.c : 1.20 150file libexec/ld.elf_so/arch/powerpc/ppc_reloc.c : 1.40 151file libexec/ld.elf_so/arch/sh3/mdreloc.c : 1.22 152file libexec/ld.elf_so/arch/sparc/mdreloc.c : 1.39 153file libexec/ld.elf_so/arch/sparc64/mdreloc.c : 1.39 154file libexec/ld.elf_so/arch/vax/mdreloc.c : 1.21 155file libexec/ld.elf_so/arch/x86_64/mdreloc.c : 1.27 156file sbin/fsck_ext2fs/dir.c : 1.19 157file sbin/routed/rtquery/rtquery.c : 1.18 158file sys/arch/amd64/amd64/pmap.c : 1.26 159file sys/arch/i386/pci/piixpcib.c : 1.4 160file sys/arch/m68k/m68k/pmap_motorola.c : 1.4 161file sys/crypto/cast128/cast128.c : 1.9 162file sys/ddb/db_command.c : 1.86 163file sys/dev/cardbus/cardbus_map.c : 1.21 164file sys/dev/fss.c : 1.25 165file sys/dev/ic/igsfb.c : 1.39 166file sys/dev/ic/mb86950.c : 1.5 167file sys/dev/ic/midway.c : 1.71 168file sys/dev/kttcp.c : 1.18 169file sys/dev/rasops/rasops_bitops.h : 1.9 170file sys/dev/pci/cmpci.c : 1.31 171file sys/dev/pci/machfb.c : 1.45 172file sys/dev/usb/ohci.c : 1.174 173file sys/dev/usb/uhci.c : 1.196 174file sys/dev/rasops/rasops_bitops.h : 1.9 175file sys/dist/ipf/netinet/ip_nat.c : 1.10 176file sys/dist/ipf/netinet/ip_rpcb_pxy.c : 1.8 177file sys/dist/pf/net/pf.c : 1.22 178file sys/fs/udf/udf_vnops.c : 1.4 179file sys/kern/kern_sig.c : 1.219 180file sys/kern/tty.c : 1.181 181file sys/net/bpf.c : 1.116 182file sys/net/zlib.c : 1.26 183file sys/netccitt/if_x25subr.c : 1.37 184file sys/netinet/in.c : 1.107 185file sys/netsmb/smb_smb.c : 1.27 186file sys/netsmb/smb_trantcp.c : 1.22 187file sys/nfs/nfs_serv.c : 1.108 188file sys/nfs/nfs_socket.c : 1.129 189file sys/nfs/nfs_syscalls.c : 1.91 190file sys/ufs/lfs/lfs_vfsops.c : 1.207 [also (char *)] 191file usr.bin/ftp/ftp.c : 1.140 192file usr.bin/find/function.c : 1.54 193file usr.bin/mail/tty.c : 1.20 194file usr.bin/nl/nl.c : 1.7 195file usr.bin/systat/keyboard.c : 1.23 196file usr.bin/usbhidctl/usbhid.c : 1.29 197file usr.bin/vi/cl/cl_read.c : 1.5 198file usr.bin/vi/ex/ex_cscope.c : 1.12 199file usr.bin/vi/ex/ex_tag.c : 1.19 200file usr.bin/vi/vi/v_txt.c : 1.15 201file usr.sbin/altq/altqstat/qdisc_rio.c : 1.4 202file usr.sbin/cron/do_command.c : 1.19 203file usr.sbin/timed/timed/slave.c : 1.15 204descr 205 GCC 4.1 gets many uninitialised variable warnings wrong. We should 206 really audit all the old hacks like this when older compilers are 207 removed from the tree, as many are probably no longer required. 208 The problem is that it does not recognize initialization via function 209 call pointer. I.e. 210 int p; 211 foo(&p); 212 does not mark p as initialized. 213kcah 214 215hack gcc4 pointer sign and strict aliasing problems 216mdate 10 May 2006 217who mrg 218file bin/ed/Makefile : 1.33 219file distrib/utils/sysinst/Makefile.inc : 1.44 220file distrib/utils/x_dhclient/Makefile : 1.15 221file games/bcd/Makefile : 1.5 222file games/dab/Makefile : 1.5 223file games/larn/Makefile : 1.17 224file games/pom/Makefile : 1.5 225file lib/libasn1/Makefile : 1.26 226file lib/libcrypt/Makefile : 1.17 227file lib/libgssapi/Makefile : 1.16 228file lib/libhdb/Makefile : 1.20 229file lib/libkadm5clnt/Makefile : 1.21 230file lib/libkadm5srv/Makefile : 1.25 231file lib/libkrb5/Makefile : 1.35 232file lib/libssh/Makefile : 1.6 233file lib/libtelnet/Makefile : 1.26 234file libexec/getty/Makefile : 1.14 235file libexec/kadmind/Makefile : 1.19 236file libexec/kpasswdd/Makefile : 1.14 237file sbin/atactl/Makefile : 1.3 238file sbin/cgdconfig/Makefile : 1.7 239file sbin/clri/Makefile : 1.13 240file sbin/dkctl/Makefile : 1.4 241file sbin/dump/Makefile : 1.33 242file sbin/fdisk/Makefile : 1.35 243file sbin/fsck_ext2fs/Makefile : 1.11 244file sbin/fsck_ffs/Makefile : 1.29 245file sbin/fsdb/Makefile : 1.18 246file sbin/mount_smbfs/Makefile : 1.4 247file sbin/newfs/Makefile : 1.30 248file sbin/newfs_sysvbfs/Makefile : 1.2 249file sbin/restore/Makefile : 1.23 250file sbin/veriexecctl/Makefile : 1.11 251file sys/lib/libsa/Makefile : 1.59 252file sys/arch/evbarm/adi_brh/brh_machdep.c : 1.24 253file usr.bin/awk/Makefile : 1.9 254file usr.bin/crontab/Makefile : 1.24 255file usr.bin/ctags/Makefile : 1.8 256file usr.bin/gzip/Makefile : 1.10 257file usr.bin/ssh/sftp/Makefile : 1.10 258file usr.bin/ssh/ssh/Makefile : 1.25 259file usr.bin/vi/build/Makefile : 1.26 260file usr.bin/telnet/Makefile : 1.40 261file usr.bin/tn3270/tn3270/Makefile : 1.36 262file usr.bin/tr/Makefile : 1.4 263file usr.sbin/amd/amd/Makefile : 1.27 264file usr.sbin/amd/amq/Makefile : 1.14 265file usr.sbin/amd/libamu/Makefile : 1.20 266file usr.sbin/amd/pawd/Makefile : 1.5 267file usr.sbin/bind/Makefile.inc : 1.22 268file usr.sbin/bind/libdns/Makefile : 1.3 269file usr.sbin/bind/named/Makefile : 1.17 270file usr.sbin/bootp/bootptest/Makefile : 1.2 271file usr.sbin/chrtbl/Makefile : 1.6 272file usr.sbin/cron/Makefile : 1.12 273file usr.sbin/dhcp/Makefile.inc : 1.20 274file usr.sbin/dumplfs/Makefile : 1.11 275file usr.sbin/hprop/Makefile : 1.13 276file usr.sbin/installboot/Makefile : 1.35 277file usr.sbin/ipf/ipftest/Makefile : 1.32 278file usr.sbin/isdn/isdnd/Makefile : 1.6 279file usr.sbin/isdn/isdnmonitor/Makefile : 1.3 280file usr.sbin/isdn/isdntel/Makefile : 1.2 281file usr.sbin/isdn/isdntrace/Makefile : 126 282file usr.sbin/mopd/common/Makefile : 1.10 283file usr.sbin/mopd/mopd/Makefile : 1.9 284file usr.sbin/mopd/mopprobe/Makefile : 1.7 285file usr.sbin/makefs/Makefile : 1.17 286file usr.sbin/mscdlabel/Makefile : 1.5 287file usr.sbin/pkg_install/add/Makefile : 1.7 288file usr.sbin/pkg_install/create/Makefile : 1.5 289file usr.sbin/pkg_install/lib/Makefile : 1.28 290file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11 291file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5 292file usr.sbin/pppd/Makefile.inc : 1.3 293file usr.sbin/pppd/pppd/Makefile : 1.38 294file usr.sbin/rarpd/Makefile : 1.10 295file usr.sbin/rbootd/Makefile : 1.10 296file usr.sbin/rpc.pcnfsd/Makefile : 1.17 297file usr.sbin/rtadvd/Makefile : 1.9 298file usr.sbin/tcpdump/Makefile : 1.42 299file usr.sbin/wiconfig/Makefile : 1.3 300descr 301 GCC 4.1 warns on pointer sign comparision/assignments and lots of 302 code does not conform. For now we use -Wno-pointer-sign and 303 -fno-strict-aliasing. 304kcah 305 306hack 307mdate 13 Mar 2008 308who he 309file usr.sbin/racoon/Makefile : 1.19 310descr 311 Needs to avoid building privsep.c with the stack protector 312 because it uses variably-sized local arrays via CMSG_SIZE() 313 in two functions. 314kcah 315 316 317port vax 318 319 hack gcc4/vax compiler crash 320 cdate Fri Jun 30 22:39:12 PDT 2006 321 who mrg 322 file bin/csh/Makefile : 1.27 323 file lib/i18n_module/UTF7/Makefile : 1.2 324 descr 325 GCC4 on vax crashes. -O0 stops it happening so far... 326 kcah 327 328 hack gcc 2.95/vax doesn't like abort being used as function pointer 329 cdate Tue Dec 13 05:54:50 GMT 2005 330 who jmc 331 file lib/libc/rpc/svc_vc.c 1.15 332 descr 333 Provide a local definition for abort which doesn't include 334 the noreturn attribute which trips up gcc 2.95 on vax. 335 kcah 336 337 hack gcc 2.95/vax doesn't have stdbool.h and gettext needs it 338 cdate Mon May 9 12:16:22 CDT 2005 339 who jmc 340 file gnu/usr.bin/gettext/Makefile.inc.prog 1.5 341 gnu/usr.bin/gettext/libgrep/Makefile 1.3 342 gnu/usr.bin/gettext/libnlspr/Makefile 1.5 343 gnu/usr.bin/gettext/libnlsut/Makefile 1.3 344 descr 345 The latest gettext assumes a C99 environment or at least 346 configure checks to work around this. As we don't use configure 347 provide a stdbool.h for vax builds locally in directories from 348 the template provided by the gettext code. 349 kcah 350 351 hack gcc 2.95/vax cannot handle __builtin_ffs() 352 cdate Fri Aug 23 21:31:15 CEST 2002 353 who ragge 354 file sys/lib/libkern/libkern.h : 1.42 355 descr 356 __builtin_ffs() is ifdef'd away if __vax__. Matt Thomas has 357 added this feature to GCC 3 so it can be removed when switching. 358 kcah 359 360 hack gcc-vax-libbz2 361 mdate 27 Jun 2002 362 who thorpej 363 file lib/libbz2/Makefile 364 descr 365 libbz2 is mis-compiled with optimization with GCC 2.95.3 366 on VAX. -O0 works around this problem. 367 kcah 368 369 hack vax Toolchain bug 370 cdate 28 Mar 2003 371 who he 372 file sys/arch/vax/vax/intvec.S : 1.5 373 descr 374 Workaround for PR toolchain/20924. The assembler apparently 375 tries to range-check byte offsets when it doesn't have 376 sufficient information to make that decision. 377 Workaround uses `brw' instead of `brb' instruction. 378 kcah 379 380 hack vax gcc 2.95.3 -Wuninitialized workarounds 381 cdate 6 Nov 2003 382 who he 383 file sys/dev/bi/if_ni.c : 1.22 384 file sys/arch/vax/vax/ctu.c : 1.20 385 descr 386 Workaround for gcc 2.95.3 failing to detect that certain 387 variables will be initialized; so that this code compiles 388 with -Wuninitialized. Should be reviewed and possibly 389 reverted when gcc 3.3.2 is ready for vax. 390 kcah 391 392 hack vax gcc 2.95.3 structure initialization 393 cdat 13 May 2004 394 who cl 395 file sys/miscfs/kernfs/kernfs_vnops.c : 1.104 396 descr 397 Workaround for gcc 2.95.3 failing to initialize structures 398 and/or unions inside structures using nested designators. 399 Should be reverted when gcc >=3.3.3 is ready for vax. 400 kcah 401 402 hack vax gcc 2.95.3 needs -I. to build nslexer.c 403 cdat 6 Jun 2004 404 who mhitch 405 file lib/libc/arch/vax/Makefile.inc : 1.6 406 descr 407 It appears necessary to add -I. to CPPFLAGS when building 408 nslesxer.c. This may be caused by gcc 2.95.3 being used. 409 Should be reverted when a newer gcc is ready for vax. 410 kcah 411 412 hack vax gcc 2.95.3 doesn't understand "-std=c99" 413 cdat 5 April 2005 414 who tron 415 file src/share/mk/bsd.sys.mk 416 descr 417 We cannot use "-std=c99" for compiler warning level 4 and above 418 because gcc 2.95.3 doesn't support that option. 419 kcah 420 421 hack declare boolean_t in two IPF user-mode programs 422 cdate Tue Mar 7 19:19:20 CET 2006 423 who he 424 file dist/ipf/ipsend/iptests.c : 1.8 425 dist/ipf/ipsend/sock.c : 1.7 426 descr 427 The IPF user-mode programs ipsend and iptest first 428 include <sys/types.h> without _KERNEL defined, and 429 later include <sys/file.h> with _KERNEL defined. 430 This causes a build failure when building for vax, 431 since <sys/device.h> ends up being included without 432 bollean_t being defined by <sys/types.h>. 433 Build failure and further details documented in 434 PR#32907. 435 kcah 436 437port arm 438 439 hack gcc-unsigned-compare 440 cdate 09 Mar 2002 441 mdate 18 Mar 2002 442 who bjh21 443 file dist/bind/lib/nameser/ns_parse.c : 1.3 444 file dist/dhcp/minires/ns_parse.c : 1.3 445 file dist/dhcp/omapip/result.c : 1.2 446 file dist/dhcp/server/failover.c : 1.3 447 file gnu/dist/toolchain/bfd/bfd.c : 1.2 448 file gnu/dist/toolchain/bfd/format.c : 1.2 449 file gnu/dist/toolchain/gdb/target.c : 1.2 450 file sys/kern/vfs_subr.c : 1.172 451 descr When checking that a potentially-unsigned enum is >= 0, assign 452 it to an int first. This is necessary to avoid "comparison is 453 always true" warnings with -fshort-enums. Casting to an int 454 really should be enough, but turns out not to be. 455 kcah 456 457 hack gcc 3.3.2/arm sys/kern/uipc_socket.c 458 cdate Tue Oct 28 18:02:16 GMT 2003 459 who skrll 460 pr 23044 461 file sys/arch/arm/conf/Makefile.arm : 1.19 462 descr 463 Performing a build.sh tools on a CATS with NFS mounted 464 obj and src directories results in "panic: receive 1" 465 The hack is to compile sys/kern/uipc_socket.c with 466 -fno-strict-aliasing 467 kcah 468 469 470port pc532 471 472 hack egcs-pc532-ip6_mroute 473 cdate 09 Jul 2002 474 who simonb 475 file sys/arch/pc532/conf/Makefile.pc532 : 1.70 476 file sys/arch/pc532/conf/files.pc532 : 1.47 477 descr 478 egcs 1.1.2 gets an "internal error--insn does not satisfy its 479 constraints" error compiling ip6_mroute.c with -O2 or greater. 480 -O1 works around this problem. 481 kcah 482 483 hack gcc-pc532-duffs_device 484 cdate Mon Oct 27 07:23:05 UTC 2003 485 who simonb 486 file sys/arch/pc532/conf/Makefile.pc532 : 1.71 487 file sys/arch/pc532/conf/files.pc532 : 1.52 488 pr GCC PR optimization/5230 489 descr 490 gcc incorrectly gives an "unreachable code at beginning of 491 switch statement" for a Duff's device construct in 492 arch/pc532/dev/ncr.c. There is no way to disable just this 493 warning, so -Wno-error is turned on for this file. 494 kcah 495 496 hack gcc332-cppmacro-ice 497 cdate Sun Dec 7 12:48:33 UTC 2003 498 who simonb 499 file gnu/usr.bin/gcc3/libcpp/Makefile : 1.2 500 descr 501 gcc 3.3.2 gets an ICE when compiling cppmacro.c with -O2. 502 The hack is to use -O1 for this file. Fixed in gcc 503 -current mainline, unable to work out where the fix is 504 right now. 505 kcah 506 507 508port sh3 509 510 hack gcc4-sh3-bz2 511 mdate 20 May 2006 512 who mrg 513 file lib/libbz2/Makefile : 1.10 514 descr 515 The in-tree GCC 4.1-based compiler generated too-far 516 pc-relative addresses. Hack is to build with -O0. 517 kcah 518 519 520port m68000 521 522 hack gcc4-m68000 523 cdate Fri Feb 8 10:29:37 PST 2008 524 who mrg 525 file share/mk/sys.mk : 1.94 526 file rescue/Makefile : 1.21 527 file lib/libcurses/Makefile : 1.54 528 descr 529 Many errors across the tree with optimisation. 530 This hack uses -O0 to avoid the problem. 531 kcah 532 533 534port sparc64 535 536 hack disable optimzations for uvm_bio.c on 32 bit kernels 537 cdate Sun Mar 21 14:14:04 MET 2004 538 who martin 539 file sys/arch/sparc64/conf/Makefile.sparc64 : 1.53-1.54 540 file sys/arch/sparc64/conf/files.sparc64 : 1.93 541 descr 542 The sparc compiler miscompiles uvm_bio.c when using 543 any optimization. This results in ubc_release panics. 544 kcah 545 546port macppc 547 548 hack remove inline from rotate_{left,right} 549 cdate Tue Feb 22 13:43:25 EST 2005 550 who christos 551 file src/dist/bind/lib/dns/rbt.c 552 descr 553 The macppc gcc-3.3 compiler miscompiles rbt.c when these 554 functions are inlined. The error is: 555 .* named[368]: rbt.c:1584: INSIST(child != (void *)0) >failed 556 .* named[368]: exiting (due to assertion failure) 557 This is reportedly fixed in gcc-3.4 558 kcah 559 560port mips 561 562 hack mips-shared-linker-load-address 563 cdate Fri Oct 7 08:33:10 UTC 2005 564 who simonb 565 file src/sys/kern/exec_elf32.c : 1.107 566 descr 567 With COMPAT_16 or previous enabled (which enables 568 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will 569 load and run at address 0. The check to fix this in 570 rev 1.107 only checks the first psection of the ELF 571 executable, which may not be loadable. A more correct 572 fix is to check the first loadable psection instead of 573 just the first psection. 574 kcah 575 576 hack mips-duplicate-ras-end-label 577 cdate Sat Sep 2 23:29:42 2006 578 who martin 579 file src/regress/sys/kern/ras/ras3/Makefile : 1.3 580 descr 581 Add -fno-reorder-blocks to CFLAGS to avoid duplicate 582 labels by duplicated __asm output from RAS_END() 583 macro. 584 kcah 585 586port i386 587 588 hack use volatile intermediate variable to enforce rounding 589 cdate Tue Aug 1 22:15:55 MEST 2006 590 who drochner 591 file src/lib/libm/src/lrintf.c : 1.4 592 file src/lib/libm/src/s_rintf.c : 1.8 593 descr 594 gcc-4 does subsequent operations on "float" values within 595 the i387 FPU without rounding the intermediate results 596 kcah 597