Annotation of src/doc/HACKS, Revision 1.188
1.188 ! scole 1: # $NetBSD: HACKS,v 1.187 2017/04/09 19:02:23 scole Exp $
1.1 lukem 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:
1.166 christos 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:
1.167 mrg 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:
1.1 lukem 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:
1.3 jdc 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:
1.5 salo 90: http://mail-index.NetBSD.org/tech-userlevel/2003/04/06/0000.html
1.4 scw 91: kcah
92:
1.7 he 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.
1.25 mrg 104: kcah
105:
1.80 tsutsui 106: hack gcc4 wrong uninitialized variable
1.58 mrg 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
1.72 mrg 117: file dist/ntp/ntpd/ntp_request.c : 1.4
1.58 mrg 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
1.68 mrg 123: file distrib/utils/sysinst/aout2elf.c : 1.12
1.58 mrg 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
1.69 mrg 130: file libexec/ld.elf_so/arch/m68k/mdreloc.c : 1.20
1.76 mrg 131: file libexec/ld.elf_so/arch/powerpc/ppc_reloc.c : 1.40
1.74 mrg 132: file libexec/ld.elf_so/arch/sh3/mdreloc.c : 1.22
1.69 mrg 133: file libexec/ld.elf_so/arch/sparc/mdreloc.c : 1.39
1.58 mrg 134: file libexec/ld.elf_so/arch/sparc64/mdreloc.c : 1.39
1.74 mrg 135: file libexec/ld.elf_so/arch/vax/mdreloc.c : 1.21
1.71 dan 136: file libexec/ld.elf_so/arch/x86_64/mdreloc.c : 1.27
1.58 mrg 137: file sbin/fsck_ext2fs/dir.c : 1.19
138: file sbin/routed/rtquery/rtquery.c : 1.18
1.73 dan 139: file sys/arch/amd64/amd64/pmap.c : 1.26
1.79 mrg 140: file sys/arch/i386/pci/piixpcib.c : 1.4
1.80 tsutsui 141: file sys/arch/m68k/m68k/pmap_motorola.c : 1.4
1.58 mrg 142: file sys/crypto/cast128/cast128.c : 1.9
143: file sys/ddb/db_command.c : 1.86
1.68 mrg 144: file sys/dev/cardbus/cardbus_map.c : 1.21
1.58 mrg 145: file sys/dev/fss.c : 1.25
1.69 mrg 146: file sys/dev/ic/igsfb.c : 1.39
1.68 mrg 147: file sys/dev/ic/mb86950.c : 1.5
1.58 mrg 148: file sys/dev/ic/midway.c : 1.71
1.68 mrg 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
1.58 mrg 152: file sys/dev/pci/machfb.c : 1.45
1.68 mrg 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
1.58 mrg 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
1.59 mrg 159: file sys/fs/udf/udf_vnops.c : 1.4
1.58 mrg 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
1.68 mrg 164: file sys/netccitt/if_x25subr.c : 1.37
1.58 mrg 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
1.100 tsutsui 175: file usr.bin/msgc/msg_sys.def : 1.33-1.34
1.58 mrg 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.
1.65 christos 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.
1.58 mrg 195: kcah
196:
1.59 mrg 197: hack gcc4 pointer sign and strict aliasing problems
198: mdate 10 May 2006
199: who mrg
200: file bin/ed/Makefile : 1.33
1.68 mrg 201: file distrib/utils/sysinst/Makefile.inc : 1.44
1.91 martin 202: file distrib/utils/x_dhclient/Makefile : 1.15
1.60 mrg 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
1.64 mrg 233: file sys/lib/libsa/Makefile : 1.59
1.68 mrg 234: file sys/arch/evbarm/adi_brh/brh_machdep.c : 1.24
1.59 mrg 235: file usr.bin/awk/Makefile : 1.9
1.64 mrg 236: file usr.bin/crontab/Makefile : 1.24
1.60 mrg 237: file usr.bin/ctags/Makefile : 1.8
1.61 mrg 238: file usr.bin/gzip/Makefile : 1.10
1.60 mrg 239: file usr.bin/ssh/sftp/Makefile : 1.10
240: file usr.bin/ssh/ssh/Makefile : 1.25
1.59 mrg 241: file usr.bin/vi/build/Makefile : 1.26
1.60 mrg 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
1.59 mrg 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
1.60 mrg 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
1.59 mrg 255: file usr.sbin/dhcp/Makefile.inc : 1.20
1.60 mrg 256: file usr.sbin/hprop/Makefile : 1.13
257: file usr.sbin/installboot/Makefile : 1.35
1.59 mrg 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
1.61 mrg 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
1.60 mrg 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
1.59 mrg 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
1.60 mrg 275: file usr.sbin/rarpd/Makefile : 1.10
1.59 mrg 276: file usr.sbin/rbootd/Makefile : 1.10
1.60 mrg 277: file usr.sbin/rpc.pcnfsd/Makefile : 1.17
278: file usr.sbin/tcpdump/Makefile : 1.42
1.59 mrg 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:
1.145 christos 285: hack disable ctf for gcc-4.8 build
286: mdate April 3 2014
1.146 wiz 287: who christos
1.145 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:
1.121 christos 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:
1.105 agc 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:
1.109 veego 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:
1.144 tron 335: hack Disable fortification for /usr/bin/makeinfo
336: cdata 24 Mar 2014
337: who tron
1.186 maya 338: file src/external/gpl2/texinfo/bin/makeinfo/Makefile : 1.1
1.144 tron 339: pr N/A
340: descr
341: If "makeinfo" is compiled with "-D_FORTIFY_SOURCE=2" using GCC 4.8.3
342: it fails to process certain texinfo files, e.g. "cl.texi"
343: included in the Emacs 24.3 distribution.
344: kcah
345:
1.147 tron 346: hack Disable Stack Smash Protection for /usr/X11R7/bin/xauth
347: cdata 05 Apr 2014
348: who tron
349: file src/external/mit/xorg/bin/xauth/Makefile : 1.4
350: pr N/A
351: descr
352: If "xauth" is compile with "USE_SSP" set to "yes" it fails
353: mysteriously with an error message like this:
354:
355: /usr/X11R7/bin/xauth: file /foo/bar/.Xauthority does not exist
356: /usr/X11R7/bin/xauth: unable to link authority file /foo/bar/.Xauthority, use /foo/bar/.Xauthority
357:
358: The compiler seems to get confused about the two filename variables
359: used in the link(2) system call.
360: kcah
361:
1.162 pooka 362: hack g++ 5.x barfs on volatile in constexpr initializers
363: cdata 27 Aug 2015
1.160 pooka 364: who pooka
1.162 pooka 365: file src/lib/libpthread/pthread_types.h : 1.17
1.160 pooka 366: pr lib/49989
367: descr
368: Trying to use e.g. pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER
369: in C++ results in:
370: error: temporary of non-literal type '__pthread_mutex_st'
371: in a constant expression
372: constexpr mutex() _NOEXCEPT : __m_(PTHREAD_MUTEX_INITIALIZER) {}
373: [...]
374: include/pthread_types.h:101:8: note: '__pthread_mutex_st' is
375: not literal because:
376: struct __pthread_mutex_st {
377: ^
378: include/pthread_types.h:103:17: note: non-static data
379: member '__pthread_mutex_st::ptm_errorcheck' has volatile type
380: pthread_spin_t ptm_errorcheck;
381: kcah
382:
1.163 christos 383: hack libm cabs{,f,l} and g++
384: cdata 11 Jan 2016
385: who christos
386: pr lib/50646
387: file src/external/gpl3/gcc.old/dist/libstdc++-v3/include/std/complex : 1.2
388: file src/external/gpl3/gcc/dist/libstdc++-v3/include/std/complex : 1.2
389: descr
390: Our cabs and cabsf have a different argument format on some architectures
391: and for that we have created in libm/compat_cabs{,f}.c. The standard
392: versions in libc are __c99_cabs{,f,l} and there are __RENAME()'s in
393: <complex.h>. G++ uses __builtin_cabs{,f,l} to implement those and they
394: translate by default to cabs{,f,l} which gets defined to cabs{,f} (the
395: wrong function) and an undefined cabsl. I've changed <complex> to use
396: the __c99_cabs{,f,l} directly. Using the __builtin_cabs{,f,l} in gcc is
397: still broken.
398: kcah
399:
1.21 mycroft 400: port vax
401:
1.102 tsutsui 402: hack gcc4/vax ICE
403: cdate
404: who tsutsui
405: file sys/arch/vax/conf/Makefile.vax
406: descr
407: GCC4 on vax gets ICE on compiling sys/ddb/db_command.c.
408: -fno-tree-ter prevents it so add it to COPTS.
409: kcah
410:
1.81 mrg 411: hack gcc4/vax compiler crash
412: cdate Fri Jun 30 22:39:12 PDT 2006
413: who mrg
414: file bin/csh/Makefile : 1.27
415: file lib/i18n_module/UTF7/Makefile : 1.2
416: descr
417: GCC4 on vax crashes. -O0 stops it happening so far...
418: kcah
419:
1.54 he 420: hack declare boolean_t in two IPF user-mode programs
421: cdate Tue Mar 7 19:19:20 CET 2006
422: who he
423: file dist/ipf/ipsend/iptests.c : 1.8
424: dist/ipf/ipsend/sock.c : 1.7
425: descr
426: The IPF user-mode programs ipsend and iptest first
427: include <sys/types.h> without _KERNEL defined, and
428: later include <sys/file.h> with _KERNEL defined.
429: This causes a build failure when building for vax,
430: since <sys/device.h> ends up being included without
431: bollean_t being defined by <sys/types.h>.
432: Build failure and further details documented in
433: PR#32907.
434: kcah
435:
1.104 gmcgarry 436: hack pcc 0.9.9 large string literals
437: cdat 8 July 2008
438: who gmcgarry
439: file sys/conf/param.c : 1.58
440: descr
441: Workaround for pcc 0.9.9 not handling large string literals
442: which causes kernels with 'options INCLUDE_CONFIG_FILE' to
443: fail compilation.
444: There is a proposal on the pcc mailing list to stuff config
445: file in ELF section.
446: kcah
447:
1.107 mrg 448: hack xorg warnings
1.129 christos 449: cdat 30 July 2008, 3 June, 2013
1.107 mrg 450: who mrg
1.108 mrg 451: file external/mit/xorg/lib/libSM/Makefile : 1.2
1.129 christos 452: external/mit/xorg/lib/libX11/Makefile.libx11 : 1.10
1.107 mrg 453: external/mit/xorg/lib/libXext/Makefile : 1.2
454: external/mit/xorg/lib/libXfont/Makefile : 1.2
455: descr
456: Disable several warnings or use -Wno-error across Xorg sources
457: while we get them working
458: kcah
459:
1.112 christos 460: hack 32 bit time leftovers
461: cdat 11 January 2009
462: who christos
463: file lib/libc/time/localtime.c : 1.41
464: lib/libc/time/zic.c : 1.23
465: descr
466: The timezone compiled files still contain 32 bit time_t
467: quantities. I did not want to version the files because
468: the ``parser'' is too ugly for words. What needs to be
469: done, is to rewrite the parser from scratch also to avoid
470: potential core-dumps from parsing invalid files.
471: kcah
472:
473: hack 32 bit time leftovers
474: cdat 11 January 2009
475: who christos
476: file various
477: descr
1.113 sketch 478: Many filesystem on-disk formats have 32 bit times.
1.112 christos 479: kcah
480:
1.141 christos 481: hack gcc 4.5 fsdb miscompile
1.140 christos 482: date Sat Nov 9 11:03:02 EST 2013
483: who christos
1.141 christos 484: file src/sbin/fsdb/Makefile : 1.36 (and earlier)
1.140 christos 485: descr
486: src/sbin/fsdb/fsdb.c: In function 'findblk':
487: src/sbin/fsdb/fsdb.c:610:1: error: unrecognizable insn:
488: (insn 941 940 942 134 src/sbin/fsdb/fsdb.c:589 (set (reg:SI 604)
489: (subreg:SI (mem/s/j:DI (plus:SI (mult:SI (reg:SI 602)
490: (const_int 8 [0x8]))
491: (reg/f:SI 601)) [0 curinode.99_378->dp2.di_ib S8 A32]) 4)) \
492: -1 (nil))
493: src/sbin/fsdb/fsdb.c:610:1: internal compiler error: in \
494: extract_insn, at recog.c:2103
495: kcah
496:
1.141 christos 497: hack gcc 4.8 gcc miscompiles
498: date Sat Nov 9 16:35:18 EST 2013
499: who christos
500: file distrib/utils/x_ping/Makefile
501: file distrib/vax/miniroot/Makefile.inc
502: file distrib/vax/ramdisk/Makefile
503: file external/gpl3/gdb/lib/libdecnumber/Makefile
504: file sbin/fsdb/Makefile
505: file sbin/newfs_ext2fs/Makefile
506: file sbin/ping/Makefile
507: file usr.sbin/lmcconfig/Makefile
508: file usr.sbin/mtrace/Makefile
509: descr
510: external/gpl3/gcc/dist/gcc/expmed.c:2781:1:
511: internal compiler error: in change_address_1, at emit-rtl.c:2019
512: external/gpl3/gcc/dist/gcc/recog.c:770:1:
513: internal compiler error: in change_address_1, at emit-rtl.c:2019
514: external/gpl3/gcc/dist/libdecnumber/decNumber.c:7214:3:
515: internal compiler error: in change_address_1, at emit-rtl.c:2019
516: sbin/ping/ping.c:679:1:
517: internal compiler error: in change_address_1, at emit-rtl.c:2019
518: sbin/newfs_ext2fs/mke2fs.c:681:1:
519: internal compiler error: in reload_combine_note_use,
520: at postreload.c:1561
521: external/gpl3/gdb/dist/libdecnumber/decNumber.c:7214:3:
522: internal compiler error: in change_address_1, at emit-rtl.c:2019
523: usr.sbin/lmcconfig/lmcconfig.c:939:3:
524: internal compiler error: in reload_combine_note_use,
525: at postreload.c:1561
526: usr.sbin/mtrace/mtrace.c:1655:1:
527: internal compiler error: in change_address_1, at emit-rtl.c:2019
528: kcah
529:
1.178 rin 530: hack gcc 5.4 cc1 miscompile
531: date Tue Feb 14 07:19:57 JST 2017
532: who rin
533: pr port-vax/51967
534: file external/gpl3/gcc/usr.bin/backend/Makefile : 1.35
535: descr
536: cc1 aborts due to SIGILL when compiling the sample code attached
537: to the PR. As a workaround, compile dse.c with -O0.
538: kcah
539:
1.179 rin 540: hack libssh miscompile
1.182 rin 541: cdate Tue Feb 14 17:58:06 JST 2017
542: mdate Tue Feb 14 18:57:39 JST 2017
1.179 rin 543: who rin
544: file crypto/external/bsd/openssh/lib/Makefile : 1.20
545: descr
1.182 rin 546: poly1305.c and umac.c are miscompiled, which results in login
547: failure to/from external hosts via ssh.
1.179 rin 548: kcah
549:
1.180 rin 550: hack mandoc miscompile
551: date Tue Feb 14 18:03:05 JST 2017
552: who rin
553: file external/bsd/mdocml/lib/libmandoc/Makefile : 1.8
554: descr
555: mandoc(1) receives SIGILL in in_line_argn() from mdoc_macro.c.
556: kcah
557:
1.183 rin 558: hack libX11 miscompile
559: date Thu Feb 16 10:00:22 JST 2017
560: who rin
561: file src/external/mit/xorg/lib/libX11/Makefile.libx11 : 1.18
562: descr
563: lcWrap.c is miscompiled, which results in input failure via XIM.
1.184 rin 564: Besides, some clients, e.g., pkgsrc/x11/kterm, receive SIGSEGV.
1.183 rin 565: kcah
566:
1.21 mycroft 567: port arm
568:
569: hack gcc-unsigned-compare
570: cdate 09 Mar 2002
571: mdate 18 Mar 2002
572: who bjh21
573: file dist/bind/lib/nameser/ns_parse.c : 1.3
574: file dist/dhcp/minires/ns_parse.c : 1.3
575: file dist/dhcp/omapip/result.c : 1.2
576: file dist/dhcp/server/failover.c : 1.3
577: file gnu/dist/toolchain/bfd/bfd.c : 1.2
578: file gnu/dist/toolchain/bfd/format.c : 1.2
579: file gnu/dist/toolchain/gdb/target.c : 1.2
580: file sys/kern/vfs_subr.c : 1.172
581: descr When checking that a potentially-unsigned enum is >= 0, assign
582: it to an int first. This is necessary to avoid "comparison is
583: always true" warnings with -fshort-enums. Casting to an int
584: really should be enough, but turns out not to be.
585: kcah
586:
1.122 tsutsui 587: hack gcc-4.5 arm CNAME hostname lookup failure on
588: certain DNS environment (probably -ftree-ter problem)
589: cdate Sat Dec 24 04:59:00 UTC 2011
590: mdate
591: who tsutsui
592: file lib/libc/net/Makefile.inc 1.79
593: descr Hostname lookup against CNAMEs by some commands fails
594: on certain DNS environments if lib/libc/net/gethnamaddr.c
595: (ping(8) etc) and lib/libc/net/getaddrinfo.c (ftp(1) etc)
596: are compiled with -O2, even though nslookup(1) against
597: the same CNAME returns proper hostname.
598: They works properly if compiled with -O2 -fno-tree-ter.
599: Also -O2 fails but -O2 -fno-tree-ter works on the following
600: test case in gcc bugzilla:
601: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48863#c4
602: kcah
603:
1.124 msaitoh 604: hack gcc-4.5 arm without -fno-tree-vrp generate broken code
605: cdate Wed Nov 14 13:02:02 JST 2012
606: who msaitoh
607: file lib/libc/softfloat/Makefile.inc
608: pr 46953
609: regress src/tests/lib/libm/t_cbrt
610: regress src/tests/lib/libm/t_ceil
611: regress src/tests/lib/libm/t_exp
612: regress src/tests/lib/libm/t_log
613: regress src/tests/lib/libm/t_scalbn
614: regress src/tests/lib/libm/t_sinh
615: regress src/tests/lib/libm/t_sqrt
616: descr Gcc has a bug in tree optimization. For adddf3,
617: -INF + -INF returns 0 without -fno-tree-vrp.
618: Debugging with -fdump-tree-all shows that
619: softfloat.c.021t.cleanup_cfg is ok but softfloat.c.023t.ssa
620: is broken.
621: kcah
1.21 mycroft 622:
623: port sh3
624:
1.74 mrg 625: hack gcc4-sh3-bz2
1.103 tsutsui 626: cdate Sun May 21 03:34:57 UTC 2006
627: mdate Fri May 16 13:13:00 UTC 2008
628: who mrg, tsutsui
1.74 mrg 629: file lib/libbz2/Makefile : 1.10
630: descr
631: The in-tree GCC 4.1-based compiler generated too-far
1.103 tsutsui 632: pc-relative addresses. Hack is to build with
633: -fno-loop-optimize.
1.74 mrg 634: kcah
635:
1.96 mrg 636: port m68000
1.79 mrg 637:
1.96 mrg 638: hack gcc4-m68000
1.102 tsutsui 639: cdate Fri Feb 8 10:29:37 PST 2008
640: mdate Sun May 4 15:37:19 UTC 2008
1.99 tsutsui 641: who mrg, tsutsui
1.96 mrg 642: file rescue/Makefile : 1.21
1.99 tsutsui 643: file sbin/dump_lfs/Makefile : 1.9
1.101 tsutsui 644: file sbin/fsck_ffs/Makefile : 1.35
645: file sbin/fsdb/Makefile : 1.22
646: file share/mk/sys.mk : 1.96
1.99 tsutsui 647: file usr.sbin/ndbootd/Makefile : 1.5
1.95 mrg 648: descr
1.101 tsutsui 649: Several internal compiler errors with gcc -O1
650: around 64bit integer arithmetic.
1.99 tsutsui 651: This hack uses -O1 and adds some -fno-tree-foo options
652: to avoid the problem.
1.101 tsutsui 653: This might be related with GCC Bugzilla Bug 32424.
1.95 mrg 654: kcah
655:
1.141 christos 656: port m68k,sh3,vax
1.135 christos 657:
658: hack gcc-4.8.1
659: cdate Wed Nov 6 20:41:35 EST 2013
660: who christos
1.141 christos 661: file src/external/gpl3/gcc/libstdc++-v3/Makefile : 1.6
1.135 christos 662: descr
663: compile hashtable_c++0x.cc with -O2 instead of -Os to
664: produce missing instantiation of std::lower_bound expansion
665: for unsigned long.
666: kcah
1.22 mrg 667:
1.116 mrg 668: port sparc
669:
670: hack avoid NULL pointer derefs in savefpstate IPIs and GCC 4.5.3
671: cdate Sun Aug 14 19:26:48 PDT 2011
672: who mrg
673: file sys/arch/sparc64/sparc/cpu.c : 1.234
674: file sys/arch/sparc64/sparc/cpuvar.h : 1.90
675: file sys/arch/sparc64/sparc/genassym.cf : 1.67
676: file sys/arch/sparc64/sparc/locore.s : 1.265
677: descr
678: Something is wrong with GCC 4.5.3 and the savefpstate IPI.
679: Post newlock2 there was a bug where a lock was reduced from
680: IPL_SCHED to IPL_VM (?) and occasionally savefpstate IPI
681: would crash due to NULL IPI. This was fixed by re-using the
682: right IPL value. However, GCC 4.5.3 build kernels have the
683: same problems. For now, the hack is re-instated.
684: kcah
685:
686:
1.51 simonb 687: port mips
688:
689: hack mips-shared-linker-load-address
690: cdate Fri Oct 7 08:33:10 UTC 2005
691: who simonb
692: file src/sys/kern/exec_elf32.c : 1.107
693: descr
694: With COMPAT_16 or previous enabled (which enables
695: ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will
696: load and run at address 0. The check to fix this in
697: rev 1.107 only checks the first psection of the ELF
698: executable, which may not be loadable. A more correct
699: fix is to check the first loadable psection instead of
700: just the first psection.
701: kcah
1.54 he 702:
1.85 martin 703: hack mips-duplicate-ras-end-label
704: cdate Sat Sep 2 23:29:42 2006
705: who martin
1.92 chs 706: file src/regress/sys/kern/ras/ras3/Makefile : 1.3
1.85 martin 707: descr
708: Add -fno-reorder-blocks to CFLAGS to avoid duplicate
709: labels by duplicated __asm output from RAS_END()
710: macro.
711: kcah
712:
1.106 lukem 713: hack mips-mcount-assembler-warning
714: cdate Tue Jul 29 14:16:52 UTC 2008
715: who lukem
716: file src/lib/libc/gmon/Makefile.inc : 1.8
717: descr
718: Workaround for PR port-mips/39192.
719: common/lib/libc/gmon/mcount.c generates a (fatal)
720: assembler warning on MIPS:
721: Warning: No .cprestore pseudo-op used in PIC code
722: Add COPTS.count.c+=-Wa,--no-warn to avoid -Wa,--fatal-warnings
723: kcah
724:
1.82 christos 725: port i386
726:
1.84 drochner 727: hack use volatile intermediate variable to enforce rounding
728: cdate Tue Aug 1 22:15:55 MEST 2006
729: who drochner
730: file src/lib/libm/src/lrintf.c : 1.4
731: file src/lib/libm/src/s_rintf.c : 1.8
732: descr
733: gcc-4 does subsequent operations on "float" values within
734: the i387 FPU without rounding the intermediate results
735: kcah
1.110 macallan 736:
1.148 christos 737: port x86
738: hack turn off optimization for biosdisk_ll.c because otherwise
739: we are pass the wrong arguments to biosdisk_read().
740: $ cd /usr/src/sys/arch/i386/floppies/bootflopp-com
741: $ qemu-system-i386 -nographic -fda boot-com1.fs -boot a
742: who christos
743: file src/sys/arch/i386/stand/lib/Makefile : 1.38
744: descr
745: Turning on DISK_DEBUG shows the problem. We should find
746: out which option is causing this.
747: hcah
748:
1.110 macallan 749: port powerpc
750:
751: hack avoid using __builtin_return_address(0) because it fails in
752: Xorg's module loader
753: cdate Sat Sep 27 03:52:05 UTC 2008
754: who macallan
755: file src/libexec/ld.elf_so/rtld.c : 1.121
756: descr
757: workaround for PR port-macppc/37812
758: kcah
759:
1.115 matt 760: hack define TARGET_SECURE_PLT and HAVE_AS_TLS because when
761: building the native compiler via build.sh those don't defined
762: properly.
763: cdate Sat Mar 12 08:00:00 UTC 2011
764: who matt
765: file src/gnu/dist/gcc4/gcc/config/rs6000/netbsd.h
766: descr
767: see above
768: kcah
1.117 christos 769:
770: port powerpc64
771:
772: hack include _errno.c in libposix so that __errno resolves. It
773: should resolve from libc's errno, but somehow it does not.
774: Linker bug?
775: cdate Thu Oct 27 13:19:47 EDT 2011
776: who christos
777: file src/lib/libposix/Makefile: 1.15
1.118 christos 778: file src/lib/librt/Makefile: 1.14
1.117 christos 779: descr
780: workaround for:
781: libposix_pic.a(cerror.pico)(.text+0x14): unresolvable \
782: R_PPC64_REL24 relocation against symbol `.__errno'
783: kcah
1.119 christos 784:
785: hack rename data() function in mdocml to avoid redefined error.
786: Compiler/Assembler bug?
787: cdate Sat Oct 29 11:16:01 EDT 2011
788: who christos
789: file src/external/bsd/mdocml/tbl_data.c: 1.2
790: descr
791: workaround for:
792: {standard input}: Assembler messages:
793: {standard input}:105: Error: symbol `.data' is already \
794: defined
795: kcah
1.120 christos 796:
797: port emips
798:
799: hack Add nop between ctc1 and mtc0 to avoid assembler internal
800: error
801: cdate Sat Oct 29 16:57:34 EDT 2011
802: who christos
803: file src/sys/arch/mips/mips/mips_fpu.c: 1.7
804: descr
805: workaround for:
806: {standard input}: Assembler messages:
807: {standard input}:730: Internal error!
808: Assertion failure in append_insn at /usr/src/external/gpl3/\
809: binutils/dist/gas/config/tc-mips.c line 2910.
810: kcah
1.125 martin 811:
812: port ia64
813:
1.157 martin 814: hack libgcc unwind dummy function
815: cdate Fri Apr 17 14:31:03 CEST 2015
816: who martin
817: file src/external/gpl3/gcc/dist/libgcc/config/ia64/unwind-ia64.c: 1.4
818: descr
819: Add an empty _Unwind_FindTableEntry() implementation.
820: In the end we will use our libc stuff, and this should
821: go away again.
822: kcah
823:
1.128 christos 824: port x68k
1.127 martin 825:
1.128 christos 826: hack compiler error with gcc 4.5.x
827: cdate Fri May 24 13:23:01 EDT 2013
828: who christos
829: file src/external/gpl3/gcc/usr.bin/bakend/Makefile: 1.17
830: xsrc/external/mit/xorg/lib/libGLU/Makefile: 1.11
831: descr
832: workaround for:
833: internal compiler error: in cselib_record_set, at cselib.c:1999
834: kcah
1.130 joerg 835:
836: hack fallback to /usr/bin/clang-cpp in rpcgen
837: cdate Wed Jun 5 15:49:27 CEST 2013
838: who joerg
839: file src/usr.bin/rpcgen/rpc_main.c
840: descr
1.136 joerg 841: It is undecided which compiler owns /usr/bin/cpp and whether it should
1.130 joerg 842: exist in a MKGCC=no world. To allow rpcgen to work out-of-the-box,
843: if either gcc or clang is installed, use /usr/bin/clang-cpp as fallback.
844: This applies only if RPCGEN_CPP is not set and /usr/bin/cpp is not executable.
845: kcah
1.131 skrll 846:
1.155 skrll 847: port hppa
1.131 skrll 848:
849: hack compiler error with gcc 4.5.x
850: cdate Tue Jul 23 07:42:28 BST 2013
851: who skrll
1.133 skrll 852: file src/sys/lib/libkern/Makefile.libkern: 1.26
853: descr
854: workaround for unanalysed codegen bug affecting md5c.c.
855: kcah
1.149 macallan 856:
1.155 skrll 857: hack gdb vs _rtld_debug_state problem
858: cdate Thu Mar 5 09:49:53 UTC 2015
859: who skrll
860: file src/libexec/ld.elf_so/rtld.c: 1.175
861: descr
862: workaround for problem where gdb misses the breakpoint on
863: _rtld_debug_state when the function is only the
864: bv,n %r0(%rp) instruction - the nullify seems to
865: confuse something
866: kcah
867:
1.149 macallan 868: port mips64*
869: hack compiler crashes on mips64* with optimization enabled
870: cdate Tue May 13 18:46:48 UTC 2014
871: who macallan
872: file src/external/lgpl3/gmp/lib/libgmp/arch/mips64eb/Makefile.inc: 1.6
873: src/external/lgpl3/gmp/lib/libgmp/arch/mips64eb/config.h: 1.5
874: src/external/lgpl3/gmp/lib/libgmp/arch/mips64el/Makefile.inc: 1.6
875: src/external/lgpl3/gmp/lib/libgmp/arch/mips64el/config.h: 1.5
876: descr workaround for n32 gcc doing unaligned 64bit accesses when optimizing
877: pr 48696
878: kcah
1.150 martin 879:
880: port vax
881: hack compile boot with -O1
882: cdate Sat May 24 09:40:58 CEST 2014
883: who martin
884: file src/sys/arch/vax/boot/boot/Makefile: 1.41
885: descr /boot does not work when compiled with -O2 and gcc 4.8
886: kcah
887:
1.156 matt 888: port arm
889: hack avoid using labels in a 12-bit constant.
890: who matt
891: file crypto/external/bsd/openssl/lib/libcrypto/arch/arm/aes-armv4.S: 1.2
892: descr workaround for clang misassembling an instruction
893: kcah
1.177 christos 894:
895: port sparc64
896: hack during profiling with -m32 (and ASLR) labels are not generated
897: consistently
898: who christos
899: file /cvsroot/src/crypto/external/bsd/heimdal/lib/libasn1/Makefile: 1.4
900: desc asn1_krb5_asn1.po does not produce the same results during successive
901: compilation runs; it is bimodal. Turning optimization to -O0 fixes
902: the issue
903: kcah
1.187 scole 904:
905: port ia64
906: hack ski emulator crashes
907: who scole
908: file /cvsroot/src/sys/external/bsd/acpica/dist/tables/tbxfload.c: 1.6
909: desc
910: ski emulator crashes during acpi detection. Added a check for
911: uninitialized index. Submitted a request for change with upstream
912: mailing list, but never got a response
913: kcah
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