Annotation of src/doc/HACKS, Revision 1.206
1.206 ! snj 1: # $NetBSD: HACKS,v 1.205 2020/04/30 12:44:41 rin 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:
1.190 maya 30: hack static linking with libpthread
31: mdate 7 May 2019
32: who maya
33: file lib/libpthread/Makefile 1.92 -> 1.94
34: descr
35: To avoid some libc thread stub functions being picked up
36: in static builds, link pthread as one section.
37: kcah
38:
1.166 christos 39: hack gcc-5.3 optimizes memset+malloc -> calloc inside calloc
40: mdate 4 May 2016
41: who christos
42: file external/gpl2/lib/libmalloc/lib/Makefile 1.3 -> 1.5
43: descr
44: resulting in infinite recursion; we prevent this with
45: -fno-builtin-malloc
46: kcah
47:
1.167 mrg 48: hack turn off tree-vrp for parts of ufs_lookup.c
49: mdate 28 April 2016
50: who mrg christos
51: file src/sys/ufs/ufs/ufs_lookup.c : 1.144
52: pr 51094
53: descr
54: with -ftree-vrp enabled in ufs_lookup.c sometimes bad dir
55: panicks are see.
56: hcah
57:
1.1 lukem 58: hack netstat ieee1394 address printing.
59: mdate 14 Nov 2000
60: who matt
61: file lib/libc/net/getnameinfo.c : 1.32 : 497 : 503
62: descr
63: Because the current implementation of IP over IEEE1394, the
64: fw device address contains more than just the IEEE1394 EUI-64.
65: So when printing out IEEE1394 addresses, ignore the extra stuff.
66: kcah
67:
68: hack xterm vs. libterm
69: mdate 01 Aug 2000
70: who jdc
71: file xsrc/xc/programs/xterm/main.c : 1.2 : 3609 : 3614
72: pr 10383
73: descr
74: In order to extend the termcap string over 1023 bytes, a ZZ entry was
75: introduced to point to a memory location containing the full entry.
76: Without this hack, xterm will export a termcap containing the ZZ
77: entry, which will then be ignored by libterm. As xterm modifies the
78: exported termcap, this would cause those modifications to be ignored.
79: kcah
80:
81: hack wi-at-big-endian-bus
82: cdate 15 Mar 2002
83: who martin
1.203 rin 84: file dev/ic/wireg.h : 1.20
1.1 lukem 85: descr Add an option to access the underlying bus in big endian byte order
86: to work around deficiencies in bus_space_{read,write}_* macros.
87: Those don't allow the implementation of a proper pcmcia bus space
88: tag.
89: kcah
90:
1.3 jdc 91: hack specific knowledge of colours in curses code
92: cdate Sun Apr 6 11:05:24 BST 2003
93: who jdc
94: file lib/libcurses/color.c : r1.24
95: descr
96: Swap red/blue and yellow/cyan colours for COLOR_OTHER.
97: Fix is to enhance libtermcap to understand terminfo-style % sequences.
98: See also:
1.5 salo 99: http://mail-index.NetBSD.org/tech-userlevel/2003/04/06/0000.html
1.4 scw 100: kcah
101:
1.7 he 102: hack Compensation for differing types of LINUX_USRSTACK and USRSTACK
103: cdate 21 Aug 2003
104: who he
105: file sys/miscfs/procfs/procfs_linux.c : 1.14
106: descr
107: Not all ports have LINUX_USRSTACK and/or USRSTACK defined as
108: literals/constants, but refer to variables of a type which is
109: not "unsigned long", causing compilation of procfs_linux.c to
110: fail with "makes integer from pointer without a cast". This
111: is observed on e.g. the sun3 port. Ideally the "types" for
112: symbols should be consistent across all ports.
1.25 mrg 113: kcah
114:
1.80 tsutsui 115: hack gcc4 wrong uninitialized variable
1.58 mrg 116: mdate 10 May 2006
117: who mrg
118: file bin/ksh/eval.c : 1.6
119: file bin/sh/histedit.c : 1.39
120: file bin/sh/parser.c : 1.60
121: file crypto/dist/heimdal/kdc/524.c : 1.10
122: file crypto/dist/ssh/sftp.c : 1.20
123: file crypto/dist/ssh/ssh-keysign.c : 1.11
124: file dist/ipf/lib/hostname.c : 1.2
125: file dist/ipf/tools/ipmon.c : 1.8
1.72 mrg 126: file dist/ntp/ntpd/ntp_request.c : 1.4
1.58 mrg 127: file dist/ntp/ntpd/refclock_shm.c : 1.4
128: file dist/ntp/sntp/timing.c : 1.3
129: file dist/pppd/pppstats/pppstats.c : 1.3
130: file dist/tcpdump/print-zephyr.c : 1.5
1.68 mrg 131: file distrib/utils/sysinst/aout2elf.c : 1.12
1.58 mrg 132: file gnu/libexec/uucp/uucico/uucico.c : 1.6
133: file lib/libc/citrus/citrus_csmapper.c : 1.6
134: file lib/libc/citrus/citrus_pivot_factory.c : 1.5
135: file lib/libc/inet/inet_cidr_ntop.c : 1.3
136: file lib/libc/inet/inet_ntop.c : 1.3
137: file lib/libc/stdio/vfwprintf.c : 1.8
1.69 mrg 138: file libexec/ld.elf_so/arch/m68k/mdreloc.c : 1.20
1.76 mrg 139: file libexec/ld.elf_so/arch/powerpc/ppc_reloc.c : 1.40
1.74 mrg 140: file libexec/ld.elf_so/arch/sh3/mdreloc.c : 1.22
1.69 mrg 141: file libexec/ld.elf_so/arch/sparc/mdreloc.c : 1.39
1.58 mrg 142: file libexec/ld.elf_so/arch/sparc64/mdreloc.c : 1.39
1.74 mrg 143: file libexec/ld.elf_so/arch/vax/mdreloc.c : 1.21
1.71 dan 144: file libexec/ld.elf_so/arch/x86_64/mdreloc.c : 1.27
1.58 mrg 145: file sbin/fsck_ext2fs/dir.c : 1.19
146: file sbin/routed/rtquery/rtquery.c : 1.18
1.73 dan 147: file sys/arch/amd64/amd64/pmap.c : 1.26
1.79 mrg 148: file sys/arch/i386/pci/piixpcib.c : 1.4
1.80 tsutsui 149: file sys/arch/m68k/m68k/pmap_motorola.c : 1.4
1.58 mrg 150: file sys/crypto/cast128/cast128.c : 1.9
151: file sys/ddb/db_command.c : 1.86
1.68 mrg 152: file sys/dev/cardbus/cardbus_map.c : 1.21
1.58 mrg 153: file sys/dev/fss.c : 1.25
1.69 mrg 154: file sys/dev/ic/igsfb.c : 1.39
1.68 mrg 155: file sys/dev/ic/mb86950.c : 1.5
1.58 mrg 156: file sys/dev/ic/midway.c : 1.71
1.68 mrg 157: file sys/dev/kttcp.c : 1.18
158: file sys/dev/rasops/rasops_bitops.h : 1.9
159: file sys/dev/pci/cmpci.c : 1.31
1.58 mrg 160: file sys/dev/pci/machfb.c : 1.45
1.68 mrg 161: file sys/dev/usb/ohci.c : 1.174
162: file sys/dev/usb/uhci.c : 1.196
163: file sys/dev/rasops/rasops_bitops.h : 1.9
1.58 mrg 164: file sys/dist/ipf/netinet/ip_nat.c : 1.10
165: file sys/dist/ipf/netinet/ip_rpcb_pxy.c : 1.8
166: file sys/dist/pf/net/pf.c : 1.22
1.59 mrg 167: file sys/fs/udf/udf_vnops.c : 1.4
1.58 mrg 168: file sys/kern/kern_sig.c : 1.219
169: file sys/kern/tty.c : 1.181
170: file sys/net/bpf.c : 1.116
171: file sys/net/zlib.c : 1.26
1.68 mrg 172: file sys/netccitt/if_x25subr.c : 1.37
1.58 mrg 173: file sys/netinet/in.c : 1.107
174: file sys/nfs/nfs_serv.c : 1.108
175: file sys/nfs/nfs_socket.c : 1.129
176: file sys/nfs/nfs_syscalls.c : 1.91
177: file sys/ufs/lfs/lfs_vfsops.c : 1.207 [also (char *)]
178: file usr.bin/ftp/ftp.c : 1.140
179: file usr.bin/find/function.c : 1.54
180: file usr.bin/mail/tty.c : 1.20
1.100 tsutsui 181: file usr.bin/msgc/msg_sys.def : 1.33-1.34
1.58 mrg 182: file usr.bin/nl/nl.c : 1.7
183: file usr.bin/systat/keyboard.c : 1.23
184: file usr.bin/usbhidctl/usbhid.c : 1.29
185: file usr.bin/vi/cl/cl_read.c : 1.5
186: file usr.bin/vi/ex/ex_cscope.c : 1.12
187: file usr.bin/vi/ex/ex_tag.c : 1.19
188: file usr.bin/vi/vi/v_txt.c : 1.15
189: file usr.sbin/altq/altqstat/qdisc_rio.c : 1.4
190: file usr.sbin/cron/do_command.c : 1.19
191: file usr.sbin/timed/timed/slave.c : 1.15
192: descr
193: GCC 4.1 gets many uninitialised variable warnings wrong. We should
194: really audit all the old hacks like this when older compilers are
195: removed from the tree, as many are probably no longer required.
1.65 christos 196: The problem is that it does not recognize initialization via function
197: call pointer. I.e.
198: int p;
199: foo(&p);
200: does not mark p as initialized.
1.58 mrg 201: kcah
202:
1.59 mrg 203: hack gcc4 pointer sign and strict aliasing problems
204: mdate 10 May 2006
205: who mrg
206: file bin/ed/Makefile : 1.33
1.68 mrg 207: file distrib/utils/sysinst/Makefile.inc : 1.44
1.91 martin 208: file distrib/utils/x_dhclient/Makefile : 1.15
1.60 mrg 209: file games/bcd/Makefile : 1.5
210: file games/dab/Makefile : 1.5
211: file games/larn/Makefile : 1.17
212: file games/pom/Makefile : 1.5
213: file lib/libasn1/Makefile : 1.26
214: file lib/libcrypt/Makefile : 1.17
215: file lib/libgssapi/Makefile : 1.16
216: file lib/libhdb/Makefile : 1.20
217: file lib/libkadm5clnt/Makefile : 1.21
218: file lib/libkadm5srv/Makefile : 1.25
219: file lib/libkrb5/Makefile : 1.35
220: file lib/libssh/Makefile : 1.6
221: file lib/libtelnet/Makefile : 1.26
222: file libexec/getty/Makefile : 1.14
223: file libexec/kadmind/Makefile : 1.19
224: file libexec/kpasswdd/Makefile : 1.14
225: file sbin/atactl/Makefile : 1.3
226: file sbin/cgdconfig/Makefile : 1.7
227: file sbin/clri/Makefile : 1.13
228: file sbin/dkctl/Makefile : 1.4
229: file sbin/dump/Makefile : 1.33
230: file sbin/fdisk/Makefile : 1.35
231: file sbin/fsck_ext2fs/Makefile : 1.11
232: file sbin/fsck_ffs/Makefile : 1.29
233: file sbin/fsdb/Makefile : 1.18
234: file sbin/newfs/Makefile : 1.30
235: file sbin/newfs_sysvbfs/Makefile : 1.2
236: file sbin/restore/Makefile : 1.23
237: file sbin/veriexecctl/Makefile : 1.11
1.64 mrg 238: file sys/lib/libsa/Makefile : 1.59
1.68 mrg 239: file sys/arch/evbarm/adi_brh/brh_machdep.c : 1.24
1.59 mrg 240: file usr.bin/awk/Makefile : 1.9
1.64 mrg 241: file usr.bin/crontab/Makefile : 1.24
1.60 mrg 242: file usr.bin/ctags/Makefile : 1.8
1.61 mrg 243: file usr.bin/gzip/Makefile : 1.10
1.60 mrg 244: file usr.bin/ssh/sftp/Makefile : 1.10
245: file usr.bin/ssh/ssh/Makefile : 1.25
1.59 mrg 246: file usr.bin/vi/build/Makefile : 1.26
1.60 mrg 247: file usr.bin/telnet/Makefile : 1.40
248: file usr.bin/tn3270/tn3270/Makefile : 1.36
249: file usr.bin/tr/Makefile : 1.4
1.59 mrg 250: file usr.sbin/amd/amd/Makefile : 1.27
251: file usr.sbin/amd/amq/Makefile : 1.14
252: file usr.sbin/amd/libamu/Makefile : 1.20
253: file usr.sbin/amd/pawd/Makefile : 1.5
254: file usr.sbin/bind/Makefile.inc : 1.22
1.60 mrg 255: file usr.sbin/bind/libdns/Makefile : 1.3
256: file usr.sbin/bind/named/Makefile : 1.17
257: file usr.sbin/bootp/bootptest/Makefile : 1.2
258: file usr.sbin/chrtbl/Makefile : 1.6
259: file usr.sbin/cron/Makefile : 1.12
1.59 mrg 260: file usr.sbin/dhcp/Makefile.inc : 1.20
1.60 mrg 261: file usr.sbin/hprop/Makefile : 1.13
262: file usr.sbin/installboot/Makefile : 1.35
1.59 mrg 263: file usr.sbin/ipf/ipftest/Makefile : 1.32
264: file usr.sbin/isdn/isdnd/Makefile : 1.6
265: file usr.sbin/isdn/isdnmonitor/Makefile : 1.3
266: file usr.sbin/isdn/isdntel/Makefile : 1.2
267: file usr.sbin/isdn/isdntrace/Makefile : 126
1.61 mrg 268: file usr.sbin/mopd/common/Makefile : 1.10
269: file usr.sbin/mopd/mopd/Makefile : 1.9
270: file usr.sbin/mopd/mopprobe/Makefile : 1.7
1.60 mrg 271: file usr.sbin/makefs/Makefile : 1.17
272: file usr.sbin/mscdlabel/Makefile : 1.5
273: file usr.sbin/pkg_install/add/Makefile : 1.7
274: file usr.sbin/pkg_install/create/Makefile : 1.5
275: file usr.sbin/pkg_install/lib/Makefile : 1.28
1.59 mrg 276: file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11
277: file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5
278: file usr.sbin/pppd/Makefile.inc : 1.3
279: file usr.sbin/pppd/pppd/Makefile : 1.38
1.60 mrg 280: file usr.sbin/rarpd/Makefile : 1.10
1.59 mrg 281: file usr.sbin/rbootd/Makefile : 1.10
1.60 mrg 282: file usr.sbin/rpc.pcnfsd/Makefile : 1.17
283: file usr.sbin/tcpdump/Makefile : 1.42
1.59 mrg 284: descr
285: GCC 4.1 warns on pointer sign comparision/assignments and lots of
286: code does not conform. For now we use -Wno-pointer-sign and
287: -fno-strict-aliasing.
288: kcah
289:
1.145 christos 290: hack disable ctf for gcc-4.8 build
291: mdate April 3 2014
1.146 wiz 292: who christos
1.145 christos 293: file external/gpl3/gcc/usr.bin/Makefile.frontend : 1.4
294: file external/gpl3/gcc/usr.bin/Makefile.backend : 1.5
295: descr
296: nbctfconvert -g -L VERSION -g fold-const.o
297: ERROR: fold-const.c: failed to get mapping for tid 79154 \
298: ((null)) <13532>
299: kcak
300:
1.121 christos 301: hack emacs aborting on exit (libgcc issue)
302: mdate 7 November 2011
303: who christos
304: file external/gpl3/gcc/dist/gcc/unwind-dw2-fde.c : 1.2
305: descr
306: GCC 4.5.3 now calls __unregister_frame_info_bases() on unloading/exit
307: to do just that. If the symbol requested is not found, then it aborts.
308: emacs 23.3 triggers this assertion. For now disable aborting, and
309: silently ignore.
310: kcah
311:
1.105 agc 312: hack cross-building hack on Darwin
313: mdate 20 July 2008
314: who agc
315: file src/distrib/common/Makefile.mdset : 1.33
316: descr
317: Darwin has problems with getopt() when used in mdsetimage -v,
318: due to the difference between BSD and libiberty() getopt
319: implementations, more fully described in
320: http://mail-index.netbsd.org/current-users/2008/06/27/msg003242.html
321: and the subsequent thread. For just now, we just have an ugly
322: workaround not to call mdsetimage with the -v argument on Darwin
323: kcah
324:
1.109 veego 325: hack avoid rebuilding asn1 libraries
326: mdate 03 August 2008
327: who veego
328: file src/crypto/dist/heimdal/lib/asn1/gen.c : 1.10
329: file src/lib/libasn1/Makefile : 1.32
330: file src/lib/libhdb/Makefile : 1.23
331: file src/lib/libgssapi/Makefile : 1.20
332: file src/lib/libhx509/Makefile : 1.3
333: pr 9702 39185
334: descr
335: asn1_compile does not check if generated header files do not have to
336: be rebuild.
337: Generate .hx files and copy it in the Makefiles if they changed.
338: kcah
339:
1.144 tron 340: hack Disable fortification for /usr/bin/makeinfo
341: cdata 24 Mar 2014
342: who tron
1.186 maya 343: file src/external/gpl2/texinfo/bin/makeinfo/Makefile : 1.1
1.144 tron 344: pr N/A
345: descr
346: If "makeinfo" is compiled with "-D_FORTIFY_SOURCE=2" using GCC 4.8.3
347: it fails to process certain texinfo files, e.g. "cl.texi"
348: included in the Emacs 24.3 distribution.
349: kcah
350:
1.147 tron 351: hack Disable Stack Smash Protection for /usr/X11R7/bin/xauth
352: cdata 05 Apr 2014
353: who tron
354: file src/external/mit/xorg/bin/xauth/Makefile : 1.4
355: pr N/A
356: descr
357: If "xauth" is compile with "USE_SSP" set to "yes" it fails
358: mysteriously with an error message like this:
359:
360: /usr/X11R7/bin/xauth: file /foo/bar/.Xauthority does not exist
361: /usr/X11R7/bin/xauth: unable to link authority file /foo/bar/.Xauthority, use /foo/bar/.Xauthority
362:
363: The compiler seems to get confused about the two filename variables
364: used in the link(2) system call.
365: kcah
366:
1.162 pooka 367: hack g++ 5.x barfs on volatile in constexpr initializers
368: cdata 27 Aug 2015
1.160 pooka 369: who pooka
1.162 pooka 370: file src/lib/libpthread/pthread_types.h : 1.17
1.160 pooka 371: pr lib/49989
372: descr
373: Trying to use e.g. pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER
374: in C++ results in:
375: error: temporary of non-literal type '__pthread_mutex_st'
376: in a constant expression
377: constexpr mutex() _NOEXCEPT : __m_(PTHREAD_MUTEX_INITIALIZER) {}
378: [...]
379: include/pthread_types.h:101:8: note: '__pthread_mutex_st' is
380: not literal because:
381: struct __pthread_mutex_st {
382: ^
383: include/pthread_types.h:103:17: note: non-static data
384: member '__pthread_mutex_st::ptm_errorcheck' has volatile type
385: pthread_spin_t ptm_errorcheck;
386: kcah
387:
1.163 christos 388: hack libm cabs{,f,l} and g++
389: cdata 11 Jan 2016
390: who christos
391: pr lib/50646
392: file src/external/gpl3/gcc.old/dist/libstdc++-v3/include/std/complex : 1.2
393: file src/external/gpl3/gcc/dist/libstdc++-v3/include/std/complex : 1.2
394: descr
395: Our cabs and cabsf have a different argument format on some architectures
396: and for that we have created in libm/compat_cabs{,f}.c. The standard
397: versions in libc are __c99_cabs{,f,l} and there are __RENAME()'s in
398: <complex.h>. G++ uses __builtin_cabs{,f,l} to implement those and they
399: translate by default to cabs{,f,l} which gets defined to cabs{,f} (the
400: wrong function) and an undefined cabsl. I've changed <complex> to use
401: the __c99_cabs{,f,l} directly. Using the __builtin_cabs{,f,l} in gcc is
402: still broken.
403: kcah
404:
1.21 mycroft 405: port vax
406:
1.102 tsutsui 407: hack gcc4/vax ICE
1.203 rin 408: cdate Sat Dec 22 08:17:57 2007 UTC
1.102 tsutsui 409: who tsutsui
1.203 rin 410: file sys/arch/vax/conf/Makefile.vax : 1.79
1.102 tsutsui 411: descr
412: GCC4 on vax gets ICE on compiling sys/ddb/db_command.c.
413: -fno-tree-ter prevents it so add it to COPTS.
414: kcah
415:
1.81 mrg 416: hack gcc4/vax compiler crash
417: cdate Fri Jun 30 22:39:12 PDT 2006
418: who mrg
419: file bin/csh/Makefile : 1.27
420: file lib/i18n_module/UTF7/Makefile : 1.2
421: descr
422: GCC4 on vax crashes. -O0 stops it happening so far...
423: kcah
424:
1.54 he 425: hack declare boolean_t in two IPF user-mode programs
426: cdate Tue Mar 7 19:19:20 CET 2006
427: who he
428: file dist/ipf/ipsend/iptests.c : 1.8
429: dist/ipf/ipsend/sock.c : 1.7
430: descr
431: The IPF user-mode programs ipsend and iptest first
432: include <sys/types.h> without _KERNEL defined, and
433: later include <sys/file.h> with _KERNEL defined.
434: This causes a build failure when building for vax,
435: since <sys/device.h> ends up being included without
436: bollean_t being defined by <sys/types.h>.
437: Build failure and further details documented in
438: PR#32907.
439: kcah
440:
1.104 gmcgarry 441: hack pcc 0.9.9 large string literals
442: cdat 8 July 2008
443: who gmcgarry
444: file sys/conf/param.c : 1.58
445: descr
446: Workaround for pcc 0.9.9 not handling large string literals
447: which causes kernels with 'options INCLUDE_CONFIG_FILE' to
448: fail compilation.
449: There is a proposal on the pcc mailing list to stuff config
450: file in ELF section.
451: kcah
452:
1.107 mrg 453: hack xorg warnings
1.129 christos 454: cdat 30 July 2008, 3 June, 2013
1.107 mrg 455: who mrg
1.108 mrg 456: file external/mit/xorg/lib/libSM/Makefile : 1.2
1.129 christos 457: external/mit/xorg/lib/libX11/Makefile.libx11 : 1.10
1.107 mrg 458: external/mit/xorg/lib/libXext/Makefile : 1.2
459: external/mit/xorg/lib/libXfont/Makefile : 1.2
460: descr
461: Disable several warnings or use -Wno-error across Xorg sources
462: while we get them working
463: kcah
464:
1.112 christos 465: hack 32 bit time leftovers
466: cdat 11 January 2009
467: who christos
468: file lib/libc/time/localtime.c : 1.41
469: lib/libc/time/zic.c : 1.23
470: descr
471: The timezone compiled files still contain 32 bit time_t
472: quantities. I did not want to version the files because
473: the ``parser'' is too ugly for words. What needs to be
474: done, is to rewrite the parser from scratch also to avoid
475: potential core-dumps from parsing invalid files.
476: kcah
477:
478: hack 32 bit time leftovers
479: cdat 11 January 2009
480: who christos
481: file various
482: descr
1.113 sketch 483: Many filesystem on-disk formats have 32 bit times.
1.112 christos 484: kcah
485:
1.141 christos 486: hack gcc 4.5 fsdb miscompile
1.140 christos 487: date Sat Nov 9 11:03:02 EST 2013
488: who christos
1.141 christos 489: file src/sbin/fsdb/Makefile : 1.36 (and earlier)
1.140 christos 490: descr
491: src/sbin/fsdb/fsdb.c: In function 'findblk':
492: src/sbin/fsdb/fsdb.c:610:1: error: unrecognizable insn:
493: (insn 941 940 942 134 src/sbin/fsdb/fsdb.c:589 (set (reg:SI 604)
494: (subreg:SI (mem/s/j:DI (plus:SI (mult:SI (reg:SI 602)
495: (const_int 8 [0x8]))
496: (reg/f:SI 601)) [0 curinode.99_378->dp2.di_ib S8 A32]) 4)) \
497: -1 (nil))
498: src/sbin/fsdb/fsdb.c:610:1: internal compiler error: in \
499: extract_insn, at recog.c:2103
500: kcah
501:
1.141 christos 502: hack gcc 4.8 gcc miscompiles
503: date Sat Nov 9 16:35:18 EST 2013
504: who christos
1.203 rin 505: file distrib/utils/x_ping/Makefile : 1.8
506: file distrib/vax/miniroot/Makefile.inc : ?
507: file distrib/vax/ramdisk/Makefile : ?
508: file external/gpl3/gdb/lib/libdecnumber/Makefile : 1.3
509: file sbin/fsdb/Makefile : 1.36
510: file sbin/newfs_ext2fs/Makefile : 1.6
511: file sbin/ping/Makefile : 1.17
512: file usr.sbin/mtrace/Makefile : 1.11
1.141 christos 513: descr
514: external/gpl3/gcc/dist/gcc/expmed.c:2781:1:
515: internal compiler error: in change_address_1, at emit-rtl.c:2019
516: external/gpl3/gcc/dist/gcc/recog.c:770:1:
517: internal compiler error: in change_address_1, at emit-rtl.c:2019
518: external/gpl3/gcc/dist/libdecnumber/decNumber.c:7214:3:
519: internal compiler error: in change_address_1, at emit-rtl.c:2019
520: sbin/ping/ping.c:679:1:
521: internal compiler error: in change_address_1, at emit-rtl.c:2019
522: sbin/newfs_ext2fs/mke2fs.c:681:1:
523: internal compiler error: in reload_combine_note_use,
524: at postreload.c:1561
525: external/gpl3/gdb/dist/libdecnumber/decNumber.c:7214:3:
526: internal compiler error: in change_address_1, at emit-rtl.c:2019
527: usr.sbin/mtrace/mtrace.c:1655:1:
528: internal compiler error: in change_address_1, at emit-rtl.c:2019
529: kcah
530:
1.178 rin 531: hack gcc 5.4 cc1 miscompile
532: date Tue Feb 14 07:19:57 JST 2017
533: who rin
534: pr port-vax/51967
535: file external/gpl3/gcc/usr.bin/backend/Makefile : 1.35
536: descr
537: cc1 aborts due to SIGILL when compiling the sample code attached
538: to the PR. As a workaround, compile dse.c with -O0.
539: kcah
540:
1.179 rin 541: hack libssh miscompile
1.182 rin 542: cdate Tue Feb 14 17:58:06 JST 2017
543: mdate Tue Feb 14 18:57:39 JST 2017
1.179 rin 544: who rin
545: file crypto/external/bsd/openssh/lib/Makefile : 1.20
546: descr
1.182 rin 547: poly1305.c and umac.c are miscompiled, which results in login
548: failure to/from external hosts via ssh.
1.179 rin 549: kcah
550:
1.180 rin 551: hack mandoc miscompile
552: date Tue Feb 14 18:03:05 JST 2017
553: who rin
554: file external/bsd/mdocml/lib/libmandoc/Makefile : 1.8
555: descr
556: mandoc(1) receives SIGILL in in_line_argn() from mdoc_macro.c.
557: kcah
558:
1.183 rin 559: hack libX11 miscompile
560: date Thu Feb 16 10:00:22 JST 2017
561: who rin
562: file src/external/mit/xorg/lib/libX11/Makefile.libx11 : 1.18
563: descr
564: lcWrap.c is miscompiled, which results in input failure via XIM.
1.184 rin 565: Besides, some clients, e.g., pkgsrc/x11/kterm, receive SIGSEGV.
1.183 rin 566: kcah
567:
1.21 mycroft 568: port arm
569:
570: hack gcc-unsigned-compare
571: cdate 09 Mar 2002
572: mdate 18 Mar 2002
573: who bjh21
574: file dist/bind/lib/nameser/ns_parse.c : 1.3
575: file dist/dhcp/minires/ns_parse.c : 1.3
576: file dist/dhcp/omapip/result.c : 1.2
577: file dist/dhcp/server/failover.c : 1.3
578: file gnu/dist/toolchain/bfd/bfd.c : 1.2
579: file gnu/dist/toolchain/bfd/format.c : 1.2
580: file gnu/dist/toolchain/gdb/target.c : 1.2
581: file sys/kern/vfs_subr.c : 1.172
582: descr When checking that a potentially-unsigned enum is >= 0, assign
583: it to an int first. This is necessary to avoid "comparison is
584: always true" warnings with -fshort-enums. Casting to an int
585: really should be enough, but turns out not to be.
586: kcah
587:
1.122 tsutsui 588: hack gcc-4.5 arm CNAME hostname lookup failure on
589: certain DNS environment (probably -ftree-ter problem)
590: cdate Sat Dec 24 04:59:00 UTC 2011
591: mdate
592: who tsutsui
593: file lib/libc/net/Makefile.inc 1.79
594: descr Hostname lookup against CNAMEs by some commands fails
595: on certain DNS environments if lib/libc/net/gethnamaddr.c
596: (ping(8) etc) and lib/libc/net/getaddrinfo.c (ftp(1) etc)
597: are compiled with -O2, even though nslookup(1) against
598: the same CNAME returns proper hostname.
599: They works properly if compiled with -O2 -fno-tree-ter.
600: Also -O2 fails but -O2 -fno-tree-ter works on the following
601: test case in gcc bugzilla:
602: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48863#c4
603: kcah
604:
1.21 mycroft 605: port sh3
606:
1.74 mrg 607: hack gcc4-sh3-bz2
1.103 tsutsui 608: cdate Sun May 21 03:34:57 UTC 2006
609: mdate Fri May 16 13:13:00 UTC 2008
610: who mrg, tsutsui
1.74 mrg 611: file lib/libbz2/Makefile : 1.10
612: descr
613: The in-tree GCC 4.1-based compiler generated too-far
1.103 tsutsui 614: pc-relative addresses. Hack is to build with
615: -fno-loop-optimize.
1.74 mrg 616: kcah
617:
1.96 mrg 618: port m68000
1.79 mrg 619:
1.96 mrg 620: hack gcc4-m68000
1.102 tsutsui 621: cdate Fri Feb 8 10:29:37 PST 2008
622: mdate Sun May 4 15:37:19 UTC 2008
1.99 tsutsui 623: who mrg, tsutsui
1.96 mrg 624: file rescue/Makefile : 1.21
1.99 tsutsui 625: file sbin/dump_lfs/Makefile : 1.9
1.101 tsutsui 626: file sbin/fsck_ffs/Makefile : 1.35
627: file sbin/fsdb/Makefile : 1.22
628: file share/mk/sys.mk : 1.96
1.99 tsutsui 629: file usr.sbin/ndbootd/Makefile : 1.5
1.95 mrg 630: descr
1.101 tsutsui 631: Several internal compiler errors with gcc -O1
632: around 64bit integer arithmetic.
1.99 tsutsui 633: This hack uses -O1 and adds some -fno-tree-foo options
634: to avoid the problem.
1.101 tsutsui 635: This might be related with GCC Bugzilla Bug 32424.
1.95 mrg 636: kcah
637:
1.141 christos 638: port m68k,sh3,vax
1.135 christos 639:
640: hack gcc-4.8.1
641: cdate Wed Nov 6 20:41:35 EST 2013
642: who christos
1.141 christos 643: file src/external/gpl3/gcc/libstdc++-v3/Makefile : 1.6
1.135 christos 644: descr
645: compile hashtable_c++0x.cc with -O2 instead of -Os to
646: produce missing instantiation of std::lower_bound expansion
647: for unsigned long.
648: kcah
1.22 mrg 649:
1.116 mrg 650: port sparc
651:
652: hack avoid NULL pointer derefs in savefpstate IPIs and GCC 4.5.3
653: cdate Sun Aug 14 19:26:48 PDT 2011
654: who mrg
655: file sys/arch/sparc64/sparc/cpu.c : 1.234
656: file sys/arch/sparc64/sparc/cpuvar.h : 1.90
657: file sys/arch/sparc64/sparc/genassym.cf : 1.67
658: file sys/arch/sparc64/sparc/locore.s : 1.265
659: descr
660: Something is wrong with GCC 4.5.3 and the savefpstate IPI.
661: Post newlock2 there was a bug where a lock was reduced from
662: IPL_SCHED to IPL_VM (?) and occasionally savefpstate IPI
663: would crash due to NULL IPI. This was fixed by re-using the
664: right IPL value. However, GCC 4.5.3 build kernels have the
665: same problems. For now, the hack is re-instated.
666: kcah
667:
668:
1.51 simonb 669: port mips
670:
671: hack mips-shared-linker-load-address
672: cdate Fri Oct 7 08:33:10 UTC 2005
673: who simonb
674: file src/sys/kern/exec_elf32.c : 1.107
675: descr
676: With COMPAT_16 or previous enabled (which enables
677: ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will
678: load and run at address 0. The check to fix this in
679: rev 1.107 only checks the first psection of the ELF
680: executable, which may not be loadable. A more correct
681: fix is to check the first loadable psection instead of
682: just the first psection.
683: kcah
1.54 he 684:
1.85 martin 685: hack mips-duplicate-ras-end-label
686: cdate Sat Sep 2 23:29:42 2006
687: who martin
1.92 chs 688: file src/regress/sys/kern/ras/ras3/Makefile : 1.3
1.85 martin 689: descr
690: Add -fno-reorder-blocks to CFLAGS to avoid duplicate
691: labels by duplicated __asm output from RAS_END()
692: macro.
693: kcah
694:
1.106 lukem 695: hack mips-mcount-assembler-warning
696: cdate Tue Jul 29 14:16:52 UTC 2008
697: who lukem
698: file src/lib/libc/gmon/Makefile.inc : 1.8
699: descr
700: Workaround for PR port-mips/39192.
701: common/lib/libc/gmon/mcount.c generates a (fatal)
702: assembler warning on MIPS:
703: Warning: No .cprestore pseudo-op used in PIC code
704: Add COPTS.count.c+=-Wa,--no-warn to avoid -Wa,--fatal-warnings
705: kcah
706:
1.82 christos 707: port i386
708:
1.84 drochner 709: hack use volatile intermediate variable to enforce rounding
710: cdate Tue Aug 1 22:15:55 MEST 2006
711: who drochner
712: file src/lib/libm/src/lrintf.c : 1.4
713: file src/lib/libm/src/s_rintf.c : 1.8
714: descr
715: gcc-4 does subsequent operations on "float" values within
716: the i387 FPU without rounding the intermediate results
717: kcah
1.110 macallan 718:
1.148 christos 719: port x86
720: hack turn off optimization for biosdisk_ll.c because otherwise
721: we are pass the wrong arguments to biosdisk_read().
722: $ cd /usr/src/sys/arch/i386/floppies/bootflopp-com
723: $ qemu-system-i386 -nographic -fda boot-com1.fs -boot a
1.203 rin 724: cdate Mon Apr 7 21:09:55 2014 UTC
1.148 christos 725: who christos
726: file src/sys/arch/i386/stand/lib/Makefile : 1.38
727: descr
728: Turning on DISK_DEBUG shows the problem. We should find
729: out which option is causing this.
730: hcah
731:
1.110 macallan 732: port powerpc
733:
734: hack avoid using __builtin_return_address(0) because it fails in
735: Xorg's module loader
736: cdate Sat Sep 27 03:52:05 UTC 2008
737: who macallan
738: file src/libexec/ld.elf_so/rtld.c : 1.121
739: descr
740: workaround for PR port-macppc/37812
741: kcah
742:
1.115 matt 743: hack define TARGET_SECURE_PLT and HAVE_AS_TLS because when
744: building the native compiler via build.sh those don't defined
745: properly.
746: cdate Sat Mar 12 08:00:00 UTC 2011
747: who matt
1.203 rin 748: file src/gnu/dist/gcc4/gcc/config/rs6000/netbsd.h : 1.7
1.115 matt 749: descr
750: see above
751: kcah
1.117 christos 752:
753: port powerpc64
754:
755: hack include _errno.c in libposix so that __errno resolves. It
756: should resolve from libc's errno, but somehow it does not.
757: Linker bug?
758: cdate Thu Oct 27 13:19:47 EDT 2011
759: who christos
760: file src/lib/libposix/Makefile: 1.15
1.118 christos 761: file src/lib/librt/Makefile: 1.14
1.117 christos 762: descr
763: workaround for:
764: libposix_pic.a(cerror.pico)(.text+0x14): unresolvable \
765: R_PPC64_REL24 relocation against symbol `.__errno'
766: kcah
1.119 christos 767:
768: hack rename data() function in mdocml to avoid redefined error.
769: Compiler/Assembler bug?
770: cdate Sat Oct 29 11:16:01 EDT 2011
771: who christos
772: file src/external/bsd/mdocml/tbl_data.c: 1.2
773: descr
774: workaround for:
775: {standard input}: Assembler messages:
776: {standard input}:105: Error: symbol `.data' is already \
777: defined
778: kcah
1.120 christos 779:
780: port emips
781:
782: hack Add nop between ctc1 and mtc0 to avoid assembler internal
783: error
784: cdate Sat Oct 29 16:57:34 EDT 2011
785: who christos
786: file src/sys/arch/mips/mips/mips_fpu.c: 1.7
787: descr
788: workaround for:
789: {standard input}: Assembler messages:
790: {standard input}:730: Internal error!
791: Assertion failure in append_insn at /usr/src/external/gpl3/\
792: binutils/dist/gas/config/tc-mips.c line 2910.
793: kcah
1.125 martin 794:
795: port ia64
796:
1.157 martin 797: hack libgcc unwind dummy function
798: cdate Fri Apr 17 14:31:03 CEST 2015
799: who martin
800: file src/external/gpl3/gcc/dist/libgcc/config/ia64/unwind-ia64.c: 1.4
801: descr
802: Add an empty _Unwind_FindTableEntry() implementation.
803: In the end we will use our libc stuff, and this should
804: go away again.
805: kcah
806:
1.128 christos 807: port x68k
1.127 martin 808:
1.128 christos 809: hack compiler error with gcc 4.5.x
810: cdate Fri May 24 13:23:01 EDT 2013
811: who christos
812: file src/external/gpl3/gcc/usr.bin/bakend/Makefile: 1.17
813: xsrc/external/mit/xorg/lib/libGLU/Makefile: 1.11
814: descr
815: workaround for:
816: internal compiler error: in cselib_record_set, at cselib.c:1999
817: kcah
1.130 joerg 818:
819: hack fallback to /usr/bin/clang-cpp in rpcgen
820: cdate Wed Jun 5 15:49:27 CEST 2013
821: who joerg
1.203 rin 822: file src/usr.bin/rpcgen/rpc_main.c : 1.35
1.130 joerg 823: descr
1.136 joerg 824: It is undecided which compiler owns /usr/bin/cpp and whether it should
1.130 joerg 825: exist in a MKGCC=no world. To allow rpcgen to work out-of-the-box,
826: if either gcc or clang is installed, use /usr/bin/clang-cpp as fallback.
827: This applies only if RPCGEN_CPP is not set and /usr/bin/cpp is not executable.
828: kcah
1.131 skrll 829:
1.155 skrll 830: port hppa
1.131 skrll 831:
832: hack compiler error with gcc 4.5.x
833: cdate Tue Jul 23 07:42:28 BST 2013
834: who skrll
1.133 skrll 835: file src/sys/lib/libkern/Makefile.libkern: 1.26
836: descr
837: workaround for unanalysed codegen bug affecting md5c.c.
838: kcah
1.149 macallan 839:
1.155 skrll 840: hack gdb vs _rtld_debug_state problem
841: cdate Thu Mar 5 09:49:53 UTC 2015
842: who skrll
843: file src/libexec/ld.elf_so/rtld.c: 1.175
844: descr
845: workaround for problem where gdb misses the breakpoint on
846: _rtld_debug_state when the function is only the
847: bv,n %r0(%rp) instruction - the nullify seems to
848: confuse something
849: kcah
850:
1.149 macallan 851: port mips64*
852: hack compiler crashes on mips64* with optimization enabled
853: cdate Tue May 13 18:46:48 UTC 2014
854: who macallan
855: file src/external/lgpl3/gmp/lib/libgmp/arch/mips64eb/Makefile.inc: 1.6
856: src/external/lgpl3/gmp/lib/libgmp/arch/mips64eb/config.h: 1.5
857: src/external/lgpl3/gmp/lib/libgmp/arch/mips64el/Makefile.inc: 1.6
858: src/external/lgpl3/gmp/lib/libgmp/arch/mips64el/config.h: 1.5
859: descr workaround for n32 gcc doing unaligned 64bit accesses when optimizing
860: pr 48696
861: kcah
1.150 martin 862:
863: port vax
864: hack compile boot with -O1
865: cdate Sat May 24 09:40:58 CEST 2014
866: who martin
867: file src/sys/arch/vax/boot/boot/Makefile: 1.41
868: descr /boot does not work when compiled with -O2 and gcc 4.8
869: kcah
870:
1.191 christos 871: port vax
872: hack compile nir.c in gallium with -O1
873: cdate Mon Oct 28 14:39:35 EDT 2019
874: who christos
875: file /cvsroot/src/external/mit/xorg/lib/gallium/Makefile 1.36
876: descr gallium does not compile.
877: kcah
878:
1.193 christos 879: port sh3
880: hack compile parse.c in battlestar with -Wno-restrict
881: cdate Mon Oct 28 14:39:35 EDT 2019
882: who christos
883: file /cvsroot/src/games/battlestar/Makefile 1.11
884: descr fails to compile, confused by char words[][];
885: strcpy(words[n - 1], words[n + 1]);
886: kcah
887:
1.194 christos 888: port sh3
889: hack compile ddns.c in dhcpcd with no-stringop-overflow
890: cdate Tue Oct 29 20:25:59 EDT 2019
891: who christos
892: file /cvsroot/src/external/mpl/dhcp/bin/server/Makefile 1.2
893: descr fails to compile, confused by builtin_object_size in strcat(p, ".in..")
894: kcah
895:
1.156 matt 896: port arm
897: hack avoid using labels in a 12-bit constant.
1.203 rin 898: cdate Mon Mar 30 05:26:47 2015 UTC
1.156 matt 899: who matt
900: file crypto/external/bsd/openssl/lib/libcrypto/arch/arm/aes-armv4.S: 1.2
901: descr workaround for clang misassembling an instruction
902: kcah
1.177 christos 903:
904: port sparc64
905: hack during profiling with -m32 (and ASLR) labels are not generated
906: consistently
1.203 rin 907: cdate Sat Feb 11 04:56:37 2017 UTC
1.177 christos 908: who christos
909: file /cvsroot/src/crypto/external/bsd/heimdal/lib/libasn1/Makefile: 1.4
910: desc asn1_krb5_asn1.po does not produce the same results during successive
911: compilation runs; it is bimodal. Turning optimization to -O0 fixes
912: the issue
913: kcah
1.187 scole 914:
915: port ia64
916: hack ski emulator crashes
1.203 rin 917: cdate Sat Apr 8 18:10:43 2017 UTC
1.187 scole 918: who scole
919: file /cvsroot/src/sys/external/bsd/acpica/dist/tables/tbxfload.c: 1.6
920: desc
921: ski emulator crashes during acpi detection. Added a check for
922: uninitialized index. Submitted a request for change with upstream
923: mailing list, but never got a response
924: kcah
1.189 christos 925:
926: port vax
927: hack compile rtld.c with -O0
928: cdate Wed Apr 3 17:38:38 EDT 2019
929: who christos
930: file src/libexec/ld.elf_so/Makefile: 1.141
931: descr Disable optimization for rtld.c on the vax with gcc-7. Crashes on the
932: second pass loop with elm == 0xffffffff
933: kcah
1.195 rin 934:
935: port alpha
1.196 rin 936: hack GCC 7.4/8.3: userland binaries crash randomly (port-alpha/54307)
1.195 rin 937: cdate Fri Nov 1 20:43:35 UTC 2019
938: who rin
939: file src/external/bsd/jemalloc/lib/Makefile.inc: 1.11
940: descr rtree.c and tcache.c need to be compiled with -O0, alternatively,
941: you can compile whole jemalloc with -DJEMALLOC_DEBUG.
942: kcah
1.197 christos 943:
944: port powerpc
1.199 christos 945: hack compile tc.c, logerr.c, ubsan.c with -O0 for clang
1.197 christos 946: cdate Wed Jan 29 17:40:19 EST 2020
947: who christos
948: file src/external/bsd/atf/lib/libatf-c/Makefile: 1.22
1.198 christos 949: file src/external/bsd/dhcpcd/sbin/dhcpcd/Makefile: 1.49
1.199 christos 950: file src/tests/lib/libc/misc/Makefile: 1.5
951:
952: descr Disable optimization on tc.c, logerr.c, ubsan.c crashes:
1.197 christos 953: lib/libLLVMCodeGen/../../llvm/../../external/apache2/llvm/lib/..\
954: /dist/llvm/include/llvm/CodeGen/MachineFrameInfo.h", line 495, \
955: function "__int64_t llvm::MachineFrameInfo::getObjectOffset(int) const"
956: kcah
1.202 rin 957:
958: port earmv7hf*
959: hack compile gdb/dwarf2expr.c with -O0 for GCC8 (toolchain/54820 and 54877)
960: cdate Wed Apr 29 11:04:58 UTC 2020
961: who rin
962: file src/external/gpl3/gdb/lib/libgdb/Makefile: 1.22
963: descr GCC 8.4 miscompiles dwarf2expr.c with -O2 or -O1, which results in
964: crashes with 'gdb_exception_RETURN_MASK_ERROR'. Note that this occurs
965: only for earmv7hf{,eb} as far as I can see. Neither earmv6hf{,eb} nor
966: earmv7{,eb} (softfloat) are affected.
967: kcah
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