| blob | ceddc78d0b1415df8efe33e18e623d12449154cf |
1 # $NetBSD: HACKS,v 1.112 2009/01/11 18:25:17 christos 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.
30 hack netstat ieee1394 address printing.
31 mdate 14 Nov 2000
32 who matt
33 file lib/libc/net/getnameinfo.c : 1.32 : 497 : 503
34 descr
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.
38 kcah
40 hack xterm vs. libterm
41 mdate 01 Aug 2000
42 who jdc
43 file xsrc/xc/programs/xterm/main.c : 1.2 : 3609 : 3614
44 pr 10383
45 descr
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.
51 kcah
53 hack wi-at-big-endian-bus
54 cdate 15 Mar 2002
55 who martin
56 file dev/ic/wireg.h
57 descr 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.
61 kcah
63 hack specific knowledge of colours in curses code
64 cdate Sun Apr 6 11:05:24 BST 2003
65 who jdc
66 file lib/libcurses/color.c : r1.24
67 descr
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
72 kcah
74 hack Compensation for differing types of LINUX_USRSTACK and USRSTACK
75 cdate 21 Aug 2003
76 who he
77 file sys/miscfs/procfs/procfs_linux.c : 1.14
78 descr
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.
85 kcah
87 hack gcc-strict-aliasing
88 cdate 6 August 2004
89 who junyoung
90 pr 26516
91 file src/usr.sbin/racoon/racoon/Makefile : 1.21
92 descr
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.
99 kcah
101 hack gcc4 wrong uninitialized variable
102 mdate 10 May 2006
103 who mrg
104 file bin/ksh/eval.c : 1.6
105 file bin/sh/histedit.c : 1.39
106 file bin/sh/parser.c : 1.60
107 file crypto/dist/heimdal/kdc/524.c : 1.10
108 file crypto/dist/ssh/sftp.c : 1.20
109 file crypto/dist/ssh/ssh-keysign.c : 1.11
110 file dist/ipf/lib/hostname.c : 1.2
111 file dist/ipf/tools/ipmon.c : 1.8
112 file dist/ntp/ntpd/ntp_request.c : 1.4
113 file dist/ntp/ntpd/refclock_shm.c : 1.4
114 file dist/ntp/sntp/timing.c : 1.3
115 file dist/pppd/pppstats/pppstats.c : 1.3
116 file dist/smbfs/lib/smb/rap.c : 1.6
117 file dist/tcpdump/print-zephyr.c : 1.5
118 file distrib/utils/sysinst/aout2elf.c : 1.12
119 file gnu/libexec/uucp/uucico/uucico.c : 1.6
120 file lib/libc/citrus/citrus_csmapper.c : 1.6
121 file lib/libc/citrus/citrus_pivot_factory.c : 1.5
122 file lib/libc/inet/inet_cidr_ntop.c : 1.3
123 file lib/libc/inet/inet_ntop.c : 1.3
124 file lib/libc/stdio/vfwprintf.c : 1.8
125 file libexec/ld.elf_so/arch/m68k/mdreloc.c : 1.20
126 file libexec/ld.elf_so/arch/powerpc/ppc_reloc.c : 1.40
127 file libexec/ld.elf_so/arch/sh3/mdreloc.c : 1.22
128 file libexec/ld.elf_so/arch/sparc/mdreloc.c : 1.39
129 file libexec/ld.elf_so/arch/sparc64/mdreloc.c : 1.39
130 file libexec/ld.elf_so/arch/vax/mdreloc.c : 1.21
131 file libexec/ld.elf_so/arch/x86_64/mdreloc.c : 1.27
132 file sbin/fsck_ext2fs/dir.c : 1.19
133 file sbin/routed/rtquery/rtquery.c : 1.18
134 file sys/arch/amd64/amd64/pmap.c : 1.26
135 file sys/arch/i386/pci/piixpcib.c : 1.4
136 file sys/arch/m68k/m68k/pmap_motorola.c : 1.4
137 file sys/crypto/cast128/cast128.c : 1.9
138 file sys/ddb/db_command.c : 1.86
139 file sys/dev/cardbus/cardbus_map.c : 1.21
140 file sys/dev/fss.c : 1.25
141 file sys/dev/ic/igsfb.c : 1.39
142 file sys/dev/ic/mb86950.c : 1.5
143 file sys/dev/ic/midway.c : 1.71
144 file sys/dev/kttcp.c : 1.18
145 file sys/dev/rasops/rasops_bitops.h : 1.9
146 file sys/dev/pci/cmpci.c : 1.31
147 file sys/dev/pci/machfb.c : 1.45
148 file sys/dev/usb/ohci.c : 1.174
149 file sys/dev/usb/uhci.c : 1.196
150 file sys/dev/rasops/rasops_bitops.h : 1.9
151 file sys/dist/ipf/netinet/ip_nat.c : 1.10
152 file sys/dist/ipf/netinet/ip_rpcb_pxy.c : 1.8
153 file sys/dist/pf/net/pf.c : 1.22
154 file sys/fs/udf/udf_vnops.c : 1.4
155 file sys/kern/kern_sig.c : 1.219
156 file sys/kern/tty.c : 1.181
157 file sys/net/bpf.c : 1.116
158 file sys/net/zlib.c : 1.26
159 file sys/netccitt/if_x25subr.c : 1.37
160 file sys/netinet/in.c : 1.107
161 file sys/netsmb/smb_smb.c : 1.27
162 file sys/netsmb/smb_trantcp.c : 1.22
163 file sys/nfs/nfs_serv.c : 1.108
164 file sys/nfs/nfs_socket.c : 1.129
165 file sys/nfs/nfs_syscalls.c : 1.91
166 file sys/ufs/lfs/lfs_vfsops.c : 1.207 [also (char *)]
167 file usr.bin/ftp/ftp.c : 1.140
168 file usr.bin/find/function.c : 1.54
169 file usr.bin/mail/tty.c : 1.20
170 file usr.bin/msgc/msg_sys.def : 1.33-1.34
171 file usr.bin/nl/nl.c : 1.7
172 file usr.bin/systat/keyboard.c : 1.23
173 file usr.bin/usbhidctl/usbhid.c : 1.29
174 file usr.bin/vi/cl/cl_read.c : 1.5
175 file usr.bin/vi/ex/ex_cscope.c : 1.12
176 file usr.bin/vi/ex/ex_tag.c : 1.19
177 file usr.bin/vi/vi/v_txt.c : 1.15
178 file usr.sbin/altq/altqstat/qdisc_rio.c : 1.4
179 file usr.sbin/cron/do_command.c : 1.19
180 file usr.sbin/timed/timed/slave.c : 1.15
181 descr
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.
190 kcah
192 hack gcc4 pointer sign and strict aliasing problems
193 mdate 10 May 2006
194 who mrg
195 file bin/ed/Makefile : 1.33
196 file distrib/utils/sysinst/Makefile.inc : 1.44
197 file distrib/utils/x_dhclient/Makefile : 1.15
198 file games/bcd/Makefile : 1.5
199 file games/dab/Makefile : 1.5
200 file games/larn/Makefile : 1.17
201 file games/pom/Makefile : 1.5
202 file lib/libasn1/Makefile : 1.26
203 file lib/libcrypt/Makefile : 1.17
204 file lib/libgssapi/Makefile : 1.16
205 file lib/libhdb/Makefile : 1.20
206 file lib/libkadm5clnt/Makefile : 1.21
207 file lib/libkadm5srv/Makefile : 1.25
208 file lib/libkrb5/Makefile : 1.35
209 file lib/libssh/Makefile : 1.6
210 file lib/libtelnet/Makefile : 1.26
211 file libexec/getty/Makefile : 1.14
212 file libexec/kadmind/Makefile : 1.19
213 file libexec/kpasswdd/Makefile : 1.14
214 file sbin/atactl/Makefile : 1.3
215 file sbin/cgdconfig/Makefile : 1.7
216 file sbin/clri/Makefile : 1.13
217 file sbin/dkctl/Makefile : 1.4
218 file sbin/dump/Makefile : 1.33
219 file sbin/fdisk/Makefile : 1.35
220 file sbin/fsck_ext2fs/Makefile : 1.11
221 file sbin/fsck_ffs/Makefile : 1.29
222 file sbin/fsdb/Makefile : 1.18
223 file sbin/mount_smbfs/Makefile : 1.4
224 file sbin/newfs/Makefile : 1.30
225 file sbin/newfs_sysvbfs/Makefile : 1.2
226 file sbin/restore/Makefile : 1.23
227 file sbin/veriexecctl/Makefile : 1.11
228 file sys/lib/libsa/Makefile : 1.59
229 file sys/arch/evbarm/adi_brh/brh_machdep.c : 1.24
230 file usr.bin/awk/Makefile : 1.9
231 file usr.bin/crontab/Makefile : 1.24
232 file usr.bin/ctags/Makefile : 1.8
233 file usr.bin/gzip/Makefile : 1.10
234 file usr.bin/ssh/sftp/Makefile : 1.10
235 file usr.bin/ssh/ssh/Makefile : 1.25
236 file usr.bin/vi/build/Makefile : 1.26
237 file usr.bin/telnet/Makefile : 1.40
238 file usr.bin/tn3270/tn3270/Makefile : 1.36
239 file usr.bin/tr/Makefile : 1.4
240 file usr.sbin/amd/amd/Makefile : 1.27
241 file usr.sbin/amd/amq/Makefile : 1.14
242 file usr.sbin/amd/libamu/Makefile : 1.20
243 file usr.sbin/amd/pawd/Makefile : 1.5
244 file usr.sbin/bind/Makefile.inc : 1.22
245 file usr.sbin/bind/libdns/Makefile : 1.3
246 file usr.sbin/bind/named/Makefile : 1.17
247 file usr.sbin/bootp/bootptest/Makefile : 1.2
248 file usr.sbin/chrtbl/Makefile : 1.6
249 file usr.sbin/cron/Makefile : 1.12
250 file usr.sbin/dhcp/Makefile.inc : 1.20
251 file usr.sbin/dumplfs/Makefile : 1.11
252 file usr.sbin/hprop/Makefile : 1.13
253 file usr.sbin/installboot/Makefile : 1.35
254 file usr.sbin/ipf/ipftest/Makefile : 1.32
255 file usr.sbin/isdn/isdnd/Makefile : 1.6
256 file usr.sbin/isdn/isdnmonitor/Makefile : 1.3
257 file usr.sbin/isdn/isdntel/Makefile : 1.2
258 file usr.sbin/isdn/isdntrace/Makefile : 126
259 file usr.sbin/mopd/common/Makefile : 1.10
260 file usr.sbin/mopd/mopd/Makefile : 1.9
261 file usr.sbin/mopd/mopprobe/Makefile : 1.7
262 file usr.sbin/makefs/Makefile : 1.17
263 file usr.sbin/mscdlabel/Makefile : 1.5
264 file usr.sbin/pkg_install/add/Makefile : 1.7
265 file usr.sbin/pkg_install/create/Makefile : 1.5
266 file usr.sbin/pkg_install/lib/Makefile : 1.28
267 file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11
268 file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5
269 file usr.sbin/pppd/Makefile.inc : 1.3
270 file usr.sbin/pppd/pppd/Makefile : 1.38
271 file usr.sbin/rarpd/Makefile : 1.10
272 file usr.sbin/rbootd/Makefile : 1.10
273 file usr.sbin/rpc.pcnfsd/Makefile : 1.17
274 file usr.sbin/rtadvd/Makefile : 1.9
275 file usr.sbin/tcpdump/Makefile : 1.42
276 file usr.sbin/wiconfig/Makefile : 1.3
277 descr
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.
281 kcah
283 hack cross-building hack on Darwin
284 mdate 20 July 2008
285 who agc
286 file src/distrib/common/Makefile.mdset : 1.33
287 descr
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
294 kcah
296 hack avoid rebuilding asn1 libraries
297 mdate 03 August 2008
298 who veego
299 file src/crypto/dist/heimdal/lib/asn1/gen.c : 1.10
300 file src/lib/libasn1/Makefile : 1.32
301 file src/lib/libhdb/Makefile : 1.23
302 file src/lib/libgssapi/Makefile : 1.20
303 file src/lib/libhx509/Makefile : 1.3
304 pr 9702 39185
305 descr
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.
309 kcah
311 hack avoid gcc4 -O1 bug in loop optimize
312 cdate 29 November 2008
313 who tsutsui
314 file src/sbin/ifconfig/Makefile : 1.39
315 pr 40036 40066
316 descr
317 gcc -O1 seems to generate wrong code in loop optimize so that
318 ifconfig lo0 inet6 doesn't return error even if a kernel
319 doesn't have IPv6 support. (see the above PRs for details)
320 For workaround, specify -fno-loop-optimize on m68000,
321 which uses -O1 by default.
322 kcah
324 port vax
326 hack gcc4/vax ICE
327 cdate
328 who tsutsui
329 file sys/arch/vax/conf/Makefile.vax
330 descr
331 GCC4 on vax gets ICE on compiling sys/ddb/db_command.c.
332 -fno-tree-ter prevents it so add it to COPTS.
333 kcah
335 hack gcc4/vax compiler crash
336 cdate Fri Jun 30 22:39:12 PDT 2006
337 who mrg
338 file bin/csh/Makefile : 1.27
339 file lib/i18n_module/UTF7/Makefile : 1.2
340 descr
341 GCC4 on vax crashes. -O0 stops it happening so far...
342 kcah
344 hack gcc 2.95/vax doesn't like abort being used as function pointer
345 cdate Tue Dec 13 05:54:50 GMT 2005
346 who jmc
347 file lib/libc/rpc/svc_vc.c 1.15
348 descr
349 Provide a local definition for abort which doesn't include
350 the noreturn attribute which trips up gcc 2.95 on vax.
351 kcah
353 hack gcc 2.95/vax doesn't have stdbool.h and gettext needs it
354 cdate Mon May 9 12:16:22 CDT 2005
355 who jmc
356 file gnu/usr.bin/gettext/Makefile.inc.prog 1.5
357 gnu/usr.bin/gettext/libgrep/Makefile 1.3
358 gnu/usr.bin/gettext/libnlspr/Makefile 1.5
359 gnu/usr.bin/gettext/libnlsut/Makefile 1.3
360 descr
361 The latest gettext assumes a C99 environment or at least
362 configure checks to work around this. As we don't use configure
363 provide a stdbool.h for vax builds locally in directories from
364 the template provided by the gettext code.
365 kcah
367 hack gcc 2.95/vax cannot handle __builtin_ffs()
368 cdate Fri Aug 23 21:31:15 CEST 2002
369 who ragge
370 file sys/lib/libkern/libkern.h : 1.42
371 descr
372 __builtin_ffs() is ifdef'd away if __vax__. Matt Thomas has
373 added this feature to GCC 3 so it can be removed when switching.
374 kcah
376 hack gcc 2.95/vax libbz2
377 mdate 27 Jun 2002
378 who thorpej
379 file lib/libbz2/Makefile
380 descr
381 libbz2 is mis-compiled with optimization with GCC 2.95.3
382 on VAX. -O0 works around this problem.
383 kcah
385 hack vax Toolchain bug
386 cdate 28 Mar 2003
387 who he
388 file sys/arch/vax/vax/intvec.S : 1.5
389 descr
390 Workaround for PR toolchain/20924. The assembler apparently
391 tries to range-check byte offsets when it doesn't have
392 sufficient information to make that decision.
393 Workaround uses `brw' instead of `brb' instruction.
394 kcah
396 hack vax gcc 2.95.3 -Wuninitialized workarounds
397 cdate 6 Nov 2003
398 who he
399 file sys/dev/bi/if_ni.c : 1.22
400 file sys/arch/vax/vax/ctu.c : 1.20
401 descr
402 Workaround for gcc 2.95.3 failing to detect that certain
403 variables will be initialized; so that this code compiles
404 with -Wuninitialized. Should be reviewed and possibly
405 reverted when gcc 3.3.2 is ready for vax.
406 kcah
408 hack vax gcc 2.95.3 structure initialization
409 cdat 13 May 2004
410 who cl
411 file sys/miscfs/kernfs/kernfs_vnops.c : 1.104
412 descr
413 Workaround for gcc 2.95.3 failing to initialize structures
414 and/or unions inside structures using nested designators.
415 Should be reverted when gcc >=3.3.3 is ready for vax.
416 kcah
418 hack vax gcc 2.95.3 needs -I. to build nslexer.c
419 cdat 6 Jun 2004
420 who mhitch
421 file lib/libc/arch/vax/Makefile.inc : 1.6
422 descr
423 It appears necessary to add -I. to CPPFLAGS when building
424 nslesxer.c. This may be caused by gcc 2.95.3 being used.
425 Should be reverted when a newer gcc is ready for vax.
426 kcah
428 hack vax gcc 2.95.3 doesn't understand "-std=c99"
429 cdat 5 April 2005
430 who tron
431 file src/share/mk/bsd.sys.mk
432 descr
433 We cannot use "-std=c99" for compiler warning level 4 and above
434 because gcc 2.95.3 doesn't support that option.
435 kcah
437 hack declare boolean_t in two IPF user-mode programs
438 cdate Tue Mar 7 19:19:20 CET 2006
439 who he
440 file dist/ipf/ipsend/iptests.c : 1.8
441 dist/ipf/ipsend/sock.c : 1.7
442 descr
443 The IPF user-mode programs ipsend and iptest first
444 include <sys/types.h> without _KERNEL defined, and
445 later include <sys/file.h> with _KERNEL defined.
446 This causes a build failure when building for vax,
447 since <sys/device.h> ends up being included without
448 bollean_t being defined by <sys/types.h>.
449 Build failure and further details documented in
450 PR#32907.
451 kcah
453 hack pcc 0.9.9 large string literals
454 cdat 8 July 2008
455 who gmcgarry
456 file sys/conf/param.c : 1.58
457 descr
458 Workaround for pcc 0.9.9 not handling large string literals
459 which causes kernels with 'options INCLUDE_CONFIG_FILE' to
460 fail compilation.
461 There is a proposal on the pcc mailing list to stuff config
462 file in ELF section.
463 kcah
465 hack xorg warnings
466 cdat 30 July 2008
467 who mrg
468 file external/mit/xorg/lib/libSM/Makefile : 1.2
469 external/mit/xorg/lib/libX11/Makefile.libx11 : 1.2
470 external/mit/xorg/lib/libXext/Makefile : 1.2
471 external/mit/xorg/lib/libXfont/Makefile : 1.2
472 descr
473 Disable several warnings or use -Wno-error across Xorg sources
474 while we get them working
475 kcah
477 hack 32 bit time leftovers
478 cdat 11 January 2009
479 who christos
480 file lib/libc/time/localtime.c : 1.41
481 lib/libc/time/zic.c : 1.23
482 descr
483 The timezone compiled files still contain 32 bit time_t
484 quantities. I did not want to version the files because
485 the ``parser'' is too ugly for words. What needs to be
486 done, is to rewrite the parser from scratch also to avoid
487 potential core-dumps from parsing invalid files.
488 kcah
490 hack 32 bit time leftovers
491 cdat 11 January 2009
492 who christos
493 file various
494 descr
495 Many filesystem on-disk formats have 32 bit times.
496 kcah
498 port arm
500 hack gcc-unsigned-compare
501 cdate 09 Mar 2002
502 mdate 18 Mar 2002
503 who bjh21
504 file dist/bind/lib/nameser/ns_parse.c : 1.3
505 file dist/dhcp/minires/ns_parse.c : 1.3
506 file dist/dhcp/omapip/result.c : 1.2
507 file dist/dhcp/server/failover.c : 1.3
508 file gnu/dist/toolchain/bfd/bfd.c : 1.2
509 file gnu/dist/toolchain/bfd/format.c : 1.2
510 file gnu/dist/toolchain/gdb/target.c : 1.2
511 file sys/kern/vfs_subr.c : 1.172
512 descr When checking that a potentially-unsigned enum is >= 0, assign
513 it to an int first. This is necessary to avoid "comparison is
514 always true" warnings with -fshort-enums. Casting to an int
515 really should be enough, but turns out not to be.
516 kcah
519 port sh3
521 hack gcc4-sh3-bz2
522 cdate Sun May 21 03:34:57 UTC 2006
523 mdate Fri May 16 13:13:00 UTC 2008
524 who mrg, tsutsui
525 file lib/libbz2/Makefile : 1.10
526 descr
527 The in-tree GCC 4.1-based compiler generated too-far
528 pc-relative addresses. Hack is to build with
529 -fno-loop-optimize.
530 kcah
533 port m68000
535 hack gcc4-m68000
536 cdate Fri Feb 8 10:29:37 PST 2008
537 mdate Sun May 4 15:37:19 UTC 2008
538 who mrg, tsutsui
539 file rescue/Makefile : 1.21
540 file sbin/dump_lfs/Makefile : 1.9
541 file sbin/fsck_ffs/Makefile : 1.35
542 file sbin/fsdb/Makefile : 1.22
543 file share/mk/sys.mk : 1.96
544 file usr.sbin/ndbootd/Makefile : 1.5
545 descr
546 Several internal compiler errors with gcc -O1
547 around 64bit integer arithmetic.
548 This hack uses -O1 and adds some -fno-tree-foo options
549 to avoid the problem.
550 This might be related with GCC Bugzilla Bug 32424.
551 kcah
554 port sparc64
556 hack disable optimzations for uvm_bio.c on 32 bit kernels
557 cdate Sun Mar 21 14:14:04 MET 2004
558 who martin
559 file sys/arch/sparc64/conf/Makefile.sparc64 : 1.53-1.54
560 file sys/arch/sparc64/conf/files.sparc64 : 1.93
561 descr
562 The sparc compiler miscompiles uvm_bio.c when using
563 any optimization. This results in ubc_release panics.
564 kcah
566 port mips
568 hack mips-shared-linker-load-address
569 cdate Fri Oct 7 08:33:10 UTC 2005
570 who simonb
571 file src/sys/kern/exec_elf32.c : 1.107
572 descr
573 With COMPAT_16 or previous enabled (which enables
574 ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will
575 load and run at address 0. The check to fix this in
576 rev 1.107 only checks the first psection of the ELF
577 executable, which may not be loadable. A more correct
578 fix is to check the first loadable psection instead of
579 just the first psection.
580 kcah
582 hack mips-duplicate-ras-end-label
583 cdate Sat Sep 2 23:29:42 2006
584 who martin
585 file src/regress/sys/kern/ras/ras3/Makefile : 1.3
586 descr
587 Add -fno-reorder-blocks to CFLAGS to avoid duplicate
588 labels by duplicated __asm output from RAS_END()
589 macro.
590 kcah
592 hack mips-mcount-assembler-warning
593 cdate Tue Jul 29 14:16:52 UTC 2008
594 who lukem
595 file src/lib/libc/gmon/Makefile.inc : 1.8
596 descr
597 Workaround for PR port-mips/39192.
598 common/lib/libc/gmon/mcount.c generates a (fatal)
599 assembler warning on MIPS:
600 Warning: No .cprestore pseudo-op used in PIC code
601 Add COPTS.count.c+=-Wa,--no-warn to avoid -Wa,--fatal-warnings
602 kcah
604 port i386
606 hack use volatile intermediate variable to enforce rounding
607 cdate Tue Aug 1 22:15:55 MEST 2006
608 who drochner
609 file src/lib/libm/src/lrintf.c : 1.4
610 file src/lib/libm/src/s_rintf.c : 1.8
611 descr
612 gcc-4 does subsequent operations on "float" values within
613 the i387 FPU without rounding the intermediate results
614 kcah
616 port powerpc
618 hack avoid using __builtin_return_address(0) because it fails in
619 Xorg's module loader
620 cdate Sat Sep 27 03:52:05 UTC 2008
621 who macallan
622 file src/libexec/ld.elf_so/rtld.c : 1.121
623 descr
624 workaround for PR port-macppc/37812
625 kcah