[[!meta copyright="Copyright © 2007, 2008, 2010, 2011, 2012 Free Software Foundation, Inc."]] [[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable id="license" text="Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled [[GNU Free Documentation License|/fdl]]."]]"""]] [[!tag open_issue_glibc]] Here's what's to be done for maintaining glibc. [[!toc levels=2]] # [[General information|/glibc]] # [[Sources|source_repositories/glibc]] # [[Debian]] Cheat Sheet # Configuration Last reviewed up to the [[Git mirror's e80d6f94e19d17b91e3cd3ada7193cc88f621feb (2012-04-05) sources|source_repositories/glibc]]. * `t/hurdsig-fixes` hurdsig.c: In function '_hurd_internal_post_signal': hurdsig.c:1188:26: warning: 'pending' may be used uninitialized in this function [-Wmaybe-uninitialized] hurdsig.c:1168:12: note: 'pending' was declared here * `t/host-independency` `libc-alpha` discussion/commit. GCC c05436a7e361b8040ee899266e15bea817212c37. * `t/sysvshm` ../sysdeps/mach/hurd/shmat.c: In function '__shmat': ../sysdeps/mach/hurd/shmat.c:57:7: warning: implicit declaration of function '__close' [-Wimplicit-function-declaration] ../sysdeps/mach/hurd/shmget.c: In function 'get_exclusive': ../sysdeps/mach/hurd/shmget.c:85:8: warning: variable 'is_private' set but not used [-Wunused-but-set-variable] ../sysdeps/mach/hurd/shmget.c:102:8: warning: 'dir' may be used uninitialized in this function [-Wmaybe-uninitialized] ../sysdeps/mach/hurd/shmget.c:102:8: warning: 'file' may be used uninitialized in this function [-Wmaybe-uninitialized] * [[`t/tls`|t/tls]] * [[`t/tls-threadvar`|t/tls-threadvar]] * t/verify.h People didn't like this too much. Other examples: * 11988f8f9656042c3dfd9002ac85dff33173b9bd -- `static_assert` * [[toolchain/cross-gnu]], without `--disable-multi-arch` i686-pc-gnu-gcc ../sysdeps/i386/i686/multiarch/strcmp.S -c [...] ../sysdeps/i386/i686/multiarch/../strcmp.S: Assembler messages: ../sysdeps/i386/i686/multiarch/../strcmp.S:31: Error: symbol `strcmp' is already defined make[2]: *** [/media/boole-data/thomas/tmp/gnu-0/src/glibc.obj/string/strcmp.o] Error 1 make[2]: Leaving directory `/media/boole-data/thomas/tmp/gnu-0/src/glibc/string' Might simply be a missing patch(es) from master. * --build=X `long double` test: due to `cross_compiling = maybe` wants to execute a file, which fails. Thus `--build=X` has to be set. * Check what all these are: running configure fragment for sysdeps/mach/hurd checking Hurd header version... ok running configure fragment for sysdeps/mach checking for i586-pc-gnu-mig... i586-pc-gnu-mig checking for mach/mach_types.h... yes checking for mach/mach_types.defs... yes checking for task_t in mach/mach_types.h... task_t checking for thread_t in mach/mach_types.h... thread_t checking for creation_time in task_basic_info... yes checking for mach/mach.defs... yes checking for mach/mach4.defs... yes checking for mach/clock.defs... no checking for mach/clock_priv.defs... no checking for mach/host_priv.defs... no checking for mach/host_security.defs... no checking for mach/ledger.defs... no checking for mach/lock_set.defs... no checking for mach/processor.defs... no checking for mach/processor_set.defs... no checking for mach/task.defs... no checking for mach/thread_act.defs... no checking for mach/vm_map.defs... no checking for mach/memory_object.defs... yes checking for mach/memory_object_default.defs... yes checking for mach/default_pager.defs... yes checking for mach/i386/mach_i386.defs... yes checking for egrep... grep -E checking for host_page_size in mach_host.defs... no checking for mach/machine/ndr_def.h... no checking for machine/ndr_def.h... no checking for i386_io_perm_modify in mach_i386.defs... yes checking for i386_set_gdt in mach_i386.defs... yes checking whether i586-pc-gnu-mig supports the retcode keyword... yes * `elf/stackguard-macros.h` See [[t/tls|t/tls]]. * Verify 77c84aeb81808c3109665949448dba59965c391e against `~/shared/glibc/make_TAGS.patch`. * `HP_SMALL_TIMING_AVAIL` not defined anywhere. * Unify `CPUCLOCK_WHICH` stuff in `clock_*` files. * Not all tests are re-run in a `make -k tests; make tests-clean; make -k tests` cycle. For example, after `make tests-clean`: $ find ./ -name \*.out ./localedata/tst-locale.out ./localedata/sort-test.out ./localedata/de_DE.out ./localedata/en_US.out ./localedata/da_DK.out ./localedata/hr_HR.out ./localedata/sv_SE.out ./localedata/tr_TR.out ./localedata/fr_FR.out ./localedata/si_LK.out ./localedata/tst-mbswcs.out ./iconvdata/iconv-test.out ./iconvdata/tst-tables.out ./stdlib/isomac.out ./posix/wordexp-tst.out ./posix/annexc.out ./posix/tst-getconf.out ./elf/check-textrel.out ./elf/check-execstack.out ./elf/check-localplt.out ./c++-types-check.out ./check-local-headers.out ./begin-end-check.out * `CPUCLOCK_WHICH`, `t/cpuclock` /media/boole-data/thomas/tmp/gnu-0/src/glibc.obj/rt/librt_pic.a(clock_settime.os): In function `clock_settime': /media/boole-data/thomas/tmp/gnu-0/src/glibc/rt/../sysdeps/unix/clock_settime.c:113: undefined reference to `CPUCLOCK_WHICH' /media/boole-data/thomas/tmp/gnu-0/src/glibc/rt/../sysdeps/unix/clock_settime.c:114: undefined reference to `CPUCLOCK_WHICH' collect2: error: ld returned 1 exit status make[2]: *** [/media/boole-data/thomas/tmp/gnu-0/src/glibc.obj/rt/librt.so] Error 1 make[2]: Leaving directory `/media/boole-data/thomas/tmp/gnu-0/src/glibc/rt' make[1]: *** [rt/others] Error 2 make[1]: Leaving directory `/media/boole-data/thomas/tmp/gnu-0/src/glibc' make: *** [all] Error 2 * Missing interfaces, amongst many more. Many more are missing, some of which have been announced in `NEWS`, others typically haven't (like new flags to existing functions). Typically, porters will notice missing functionaly. But in case you're looking for something to work on, here's a list. `AT_EMPTY_PATH`, `CLOCK_BOOTTIME`, `CLOCK_BOOTTIME_ALARM`, `CLOCK_REALTIME_ALARM`, `O_PATH`, `PTRACE_*` (for example, cbff0d9689c4d68578b6a4f0a17807232506ea27), `RLIMIT_RTTIME`, `SEEK_DATA` (`unistd.h`), `SEEK_HOLE` (`unistd.h`) `clock_adjtime`, `fallocate`, `fallocate64`, `name_to_handle_at`, `open_by_handle_at`, `process_vm_readv`, `process_vm_writev`, `sendmmsg`, `setns`, `sync_file_range` * `chflags` IRC, OFTC, #debian-hurd, 2012-04-27: Does anyone have any idea why int main(void) { return chflags(); } will compile with gcc but not with g++ ? It says that "chflags" was not declared in this scope. I get the same error on FreeBSD, but including sys/stat.h makes it work Can't find a solution on Hurd though :/ the Hurd doesn't have chflags apparently linux neither what does it do? change flags :) Are you sure the Hurd does not have chflags ? Because gcc does not complain there is no chflags function in /usr/include but what flags does it change? According to the FreeBSD manpage, it can set flags such as UF_NODUMP, UF_IMMUTABLE etc. Hum, there is actually a chflags() definition but no declaration so actually chflags is supported, but the declaration was forgotten probably because since linux doens't have it, it has never been a problem up to now so I'd say ignore the error for now, we'll add the declaration * `getcontext`/`setcontext` Needed for [[gccgo]]. IRC, freenode, #hurd, 2012-04-19: How much work/knowledge is needed to implement getcontext/setcontext? Any already implemented alternatives available? x86 registers knowledge, as well as unix signal masks there's the linux implementation that can be taken as an exxample, but the signal part has to be rewritten Well, it's a pity they are not implemented. That's the remaining hurdle to get gccgo working :-( uh :/ Everything builds, but the testsuite fails due to these missing functions. Regarding getcontext/setcontext they seem to be written in assembly for linux but the code is not very long. How much effort would it be to write something similar for Hurd? Anybody fluent in asm? And registers and signals. gnu_srs: Signals is the key thing -- everything else we can probably just copy. I have never/not yet looked at it, though. For kfreebsd it is written in C: kern_context.c, 3/4 in one file: getcontext, setcontext, swapcontext, not makecontext. Dunno how much assembly calls used though. Hi, any preferences about implementing get/setcontext in C or Asm? gnu_srs: I think these will have to be implemented in assembly. Based on the Linux x86 variants. IRC, freenode, #hurd, 2012-04-20: youpi: Your understanding of that is better than mine -- the *context stuff can't be very useful at the moment, because when the user changes uc_stack.ss_sp (which the glibc tests are doing), we're losing access to the _hurd_threadvars. Correct? At least the getcontext test works, the other get a SIGILL. others _hurd_threadvars issue is just guessing. tschwinge: yes, threadvars are on the stack threadvars is not much code, it should just work, but care has to be taken on the libpthread/libthread side, which does some initialization OK, that at least matches my understanding. * [[`mremap`|mremap]] * `syncfs` We should be easily able to implement that one. * `futimesat`, `readlinkat`, `renameat` If we have all of 'em (check Linux kernel), `#define __ASSUME_ATFCTS`. * `bits/stat.h [__USE_ATFILE]`: `UTIME_NOW`, `UTIME_OMIT` * `io/fcntl.h [__USE_ATFILE]` Do we support `AT_FDCWD` et al.? * `MAP_POPULATE` (`mmap`, `sys/mman.h`) -- *Populate (prefault) pagetables.* Some Linux kernel version, `mm/mmap.c`: if (vm_flags & VM_LOCKED) { if (!mlock_vma_pages_range(vma, addr, addr + len)) mm->locked_vm += (len >> PAGE_SHIFT); } else if ((flags & MAP_POPULATE) && !(flags & MAP_NONBLOCK)) make_pages_present(addr, addr + len); return addr; `t/mmap`. Is only advisory, so can worked around with `#define 0`. * `t/opendirat`: `opendirat` (`scandirat`, `scandirat64`) Need changes equivalent to c55fbd1ea768f9fdef34a01377702c0d72cbc213 + 14d96785125abee5e9a49a1c3037f35a581750bd. * `madvise`, `MADV_DONTNEED` [[glibc_madvise_vs_static_linking]]. * `msync` Then define `_POSIX_MAPPED_FILES`, `_POSIX_SYNCHRONIZED_IO`. * `sys/epoll.h` Used by [[wayland]], for example. * `sys/eventfd.h` * `sys/inotify.h` * `sys/signalfd.h` * `sys/timerfd.h` * `timespec_get` (74033a2507841cf077e31221de2481ff30b43d51) * `waitflags.h` (`WEXITED`, `WNOWAIT`, `WSTOPPED`, `WCONTINUED`) IRC, freenode, #hurd, 2012-04-20: in glibc, we use the generic waitflags.h which, unlike linux's version, does not define WEXITED, WNOWAIT, WSTOPPED, WCONTINUED should the generic bits/waitflags.h define them anyway, since they are posix? well, we'd have to implement them anyway but otherwise, I'd say yes sure, but since glibc headers should expose at least everything declared by posix, i thought they should be defined anyway that might bring bugs some applications might be #ifdefing them and break when they are defined but not working i guess they would define them to 0, andd having them to non-zero values shouldn't break them (since those values don't do anything, so they would act as if they were 0.. or not?) no, I mean they would do something else, not define them to 0 like posix/tst-waitid.c, you mean? yes For specific packages: * [[octave]] * Create `t/cleanup_kernel-features.h`. * Add tests from Linux kernel commit messages for `t/dup3` et al. * In `sysdeps/unix/sysv/linux/Makefile`, there are a bunch of `-DHAVE_SENDFILE` -- but we do have `sendfile`, too. * `/usr/include/pthread.h` overwrite issue `make`, after editing `nss/nss_db/db-initgroups.c`: [...] make[2]: Leaving directory `/media/erich/home/thomas/tmp/glibc/tschwinge/Roger_Whittaker/resolv' make subdir=nss -C nss ..=../ others make[2]: Entering directory `/media/erich/home/thomas/tmp/glibc/tschwinge/Roger_Whittaker/nss' /usr/bin/install -c -m 644 ../include/pthread.h /usr/include/pthread.h /usr/bin/install: cannot remove `/usr/include/pthread.h': Permission denied make[2]: *** [/usr/include/pthread.h] Error 1 make[2]: Leaving directory `/media/erich/home/thomas/tmp/glibc/tschwinge/Roger_Whittaker/nss' make[1]: *** [nss/others] Error 2 make[1]: Leaving directory `/media/erich/home/thomas/tmp/glibc/tschwinge/Roger_Whittaker' make: *** [all] Error 2 See [[!message-id "871uv99c59.fsf@kepler.schwinge.homeip.net"]]. Passing `install_root=/INVALID` to `make`/`make check` is a cheap cure. For `make install`, prepending an additional slash to `install_root` (that is, `install_root=//[...]`) is enough to obfuscate the Makefile rules. * `sysdeps/unix/sysv/linux/syslog.c` * Verify baseline changes, if we need any follow-up changes: * a11ec63713ea3903c482dc907a108be404191a02 * 7e2b0c8562b35155820f87b5ff02a8b6850344cc * 8c0677fe5d91b7269364ca08fa08ed09e4c2d8c9 * 5a2a1d75043138e696222ced4560de2fb90b8024 * 5ae958d74180e2572d198bd7872c86f391de6da7 * 5b08ac571ff8e94fe96511a532f0d20997de5f52 * 3d04ff3a5d3ce3616837e1d15e03b6e1b360cf26 * b2ef2c014b9c66995a3eb4f310ae7c5c510279bf * 63c4ed22b5048c8701d8806026c23cc95f0df756 * ac2b484c02b01307ab6bbe5d45ddbf16d64edf8c * e35fcef8b739ed24e083ff8a3078ac14e101cf67 * 6fb8cbcb58a29fff73eb2101b34caa19a7f88eba * 8a492a675e566dc1e666df0a86cbf541442cb179 * 5dbc3b6cc0b759bf4b22d851ccb9cbf3e3cbc6ef * c86434ccb576a3ce35b5a74f72b9f03bd45b522a * d22e4cc9397ed41534c9422d0b0ffef8c77bfa53 * 15bac72bac03faeb3b725b1d208c62160f0c3ad7 * c08fb0d7bba4015078406b28d3906ccc5fda9d5a * 10b3bedcb03386cc280113f552479793e4bac35f * 754f7da38b0904b4b989d3500cc8dd5be625cf6a * 3cdaa6adb113a088fdfb87aa6d7747557eccc58d * 962dba7828cf251a9025ccb43bc6effa30379b72 * 3162f12e58c3a848db883916843b332b9f8c9d39 * 1c06ba3100847da6bd1f2e011dc24fa8debd9615 * 84b9230c404aed4fd3a7bb3d045ca367043dde8c * 090555538d4347a52807ba9f08cf20ed13206afe * 817328eea788c746131cf151b64fd250200da333 * c3758feebf7c8786231465da664743c6f0ec79cc * 1ac7a2c7b448c851eb8976fcc290a906a4075203 * c21cc9bcb38a87ff638d1099ca871d94a2192b31 * 6484ba5ef092b62b7d2112c0d976dbd6d1a40fde * b8b4863d78bf26b39918fc753b03ed98ef262903 * b76b818e6fe2061e778b3a9bbe63c554c3f9b3c1 * 8e9f92e9d5d7737afdacf79b76d98c4c42980508 -- `_dl_map_object` in `sysdeps/mach/hurd/dl-sysdep.c` * 0e516e0e14f2f9783a21cd1727bc53776341f857 * a1fb5e3ebe9d38b5ae6c5bfbfaa04882d52355bc * cf7c9078a5acdbb435498ace92cd81009637a971 * db753e2cfb2051ebf20dc089f87c5b1297cc2cff * 4a531bb0b3b582cb693de9f76d2d97d970f9a5d5 -- looks good. * 5bd6dc5c2c68fe98691db9b40f87d9b68ea9565b * 451f001b50870604e1f2daef12f04f9f460d3997 + a85b5cb4d4a5fc56e2b38638d270bf2daa67eb6c -- BZ10484. `nptl/Versions [libc] (GLIBC_PRIVATE): Export __libc_alloca_cutoff`. We don't even define it yet. Also see [[glibc___libc_alloca_cutoff_should_be_lowered]]. * 1086d70d916fd0eb969b3d89ff88abd35f6a5c34 * cfa28e560ef69372b9e15e9a2d924a0fbcfc7bca * 8cf8ce1702c354a8266e3cfa6ab54c2467d1873f * 68dc949774cb651d53541df4abdc60327f7e096b * 70181fddf1467996bea393d13294ffe76b8a0853 * a77e8cbc394ab098aa1fc3f0a6645a38348d21ca * 32465c3ea007065acd8ca8199f130cdf4068130d * 18ba70a559c52719fd94a713cc380514d9d19125 * 620a05296fe3380b7441ba7720e8b25c48a8c28c * [low] e6c61494125126d2ba77e5d99f83887a2ed49783 -- `Fix memory leak in TLS of loaded objects.` Do we need to replicate `nptl/allocatestack.c` hunk? * 6e04cbbe79f5965809fdbf1f28d7ae8b4af74d31 + 1bfbe0d335d3fc44a492648b974a0db19975f6d8 -- `Fix pathconf(_PC_BUF_SIZE).` * 28377d1bf58625172a1734b92e835591d4d23a18 -- `Optimize fdopendir a bit.` * 7fb90fb89bbdf273ab7ab96517fe1b156cd7aee1 + 6fb2dde3f1aa3a1419cb6c2dfa53dd1d506722a4 -- `Fix Linux getcwd for long paths` * [low] [[!taglink open_issue_libpthread]] 5bdcc10322c488f53557440acf71623d8b313ab5 -- return `EAGAIN` instead of `ENOMEM`. * f574184a0e4b6ed69a5d9a3234543fba6d2a7367 -- `Fix sched_setscheduler call in spawn implementation` * 3b85df27870a47ed1db84e948e37a5a50a178a92 + f50ef8f1efdd1f2b040acbb8324604f168e8832a -- sysconf * 68a3f91fcad464c4737c1eaed4ae0bf539801fb2 -- `Fix reporting of invalid timeouts in emulated pselect` * ea389b12b3b65c4a7fa91fa76f8c99867eb37865 -- `strndup -> __strndup`; strndupa? * 7e4afad5bcf49e03c3b987399c6a8f66a9018660 -- `Nicer output for negative error numbers in strerror_r`. Change needed for `sysdeps/mach/_strerror.c`? * 7ea72f99966a65a56aedba817ee2413ff9b1f23c + adcd5c15d2a37794d021104160b425ff61f88219 -- `Always fill output buffer in XPG strerror function`. Change needed for `sysdeps/mach/xpg-strerror.c`? * a91710475294c66d0005bdaae0919d36ef8ce3d2 -- sotruss. Does it work? * b1ebd700c5295a449f8d114740f0d1fb6e6b2eb5 + 80e2212d8e59933a1641f029ebd360526ff0e074 + 4997db742946d08be4378cf91221f558f928bc73 -- `Don't document si_code used for raise()`. Also for `bits/siginfo.h`? * 11988f8f9656042c3dfd9002ac85dff33173b9bd -- pldd, Does it work? Probably not: needs `/proc/[PID]/auxv`, `/proc/[PID]/exe`, `/proc/[PID]/mem` ([[!tag open_issue_hurd]], [[hurd/translator/procfs]]). * 9113ea1f3f29b3aee710efc829e85a9772bcb836 -- `--experimental-malloc`. Watch what happens. * 4e34ac6a1e256f40ab0d8eeed37aa1ea83440e76 -- `-defsym=_begin=0`. Watch what happens. Native build: apparently OK. * f781ef4015504e8a1da649c266584976238aa079 (`--with-default-link`) + 1b74661a6b93a892ecb1c717dedeedba5c2a976c + fd5e21c75d8e9221d766f4bc922a237265514ec2. Watch what happens. Native build: `use-default-link = no`. * de283087c74f720cf8a7171972e72b5fa2b45e79 (`Handle Lustre filesystem`), 4e5f31c847982997c856f03bbc35134e9fd0f61f (`Handle ext4 in {,f}pathconf`). What about stuff like that for us? * d30cf5bb00bfb286ff14d931fb69f5b53724bcdc (`Find readelf with AC_CHECK_TOOL`). Aren't there more in other configure.in and Makefile files? * 7a03a9c8c4b37b88ac5e82b557d974f3161ddaf9 (`Add read barriers in cancellation initialization`). Is this needed in other places, too? * [low] 5744c68d78f6ca6c6500e2c8d3d85b3a31f4ed2a (`Align x86 TCB to 64 bytes`). Probably we have hidden somewhere such a constant, too (in libpthread). * d96de9634a334af16c0ac711074c15ac1762b23c + ecb1482ffd85fd3279642b1dc045aa867ad4d415 (`Try shell in posix_spawn* only in compat mode`). Change looks good, but what about `SPAWN_XFLAGS_TRY_SHELL` for us? * 3ce1f2959437e952b9db4eaeed2407424f11a4d1 (`Make several tool features mandatory and simplify the code.`). Generally looks good. * `locale/global-locale.c`: Apparently, no one is using `_HURD_THREADVAR_LOCALE`. But it is exported via `hurd/threadvar.h`. * `mach/devstream.c`: reversed. Fixed in `t/repair-mach_devstream.c`. * `malloc/arena.c`: should be OK. * `Remove support for !USE___THREAD`. d063d164335938d557460bebaa7cfe388157b627 (generally looks good; `csu/errno-loc.c` (should be OK); `include/errno.h` (fixed)) + (de82006d43e198fd162807c9adc720c7ebd728a3 + 037e9fe21c92216ef7032ea2796781ec27ca182a) + 995a80dfbcb443ead5aa22682c884ec5c827a2ea (discussing) + bc7e1c3667b577ad418f7520df2a7dbccea04ee9 (should be ok). * [OK] 22a89187139a9083ca73989bfd11597e0f85cb61 (`malloc: Remove all kinds of unused configuration options and dead code.`). `NO_STARTER` changes (should be OK). * [high] `pagesize`, 02d46fc4b969e25e4ba0c54aa95fa98d7279bd05 (`Simplify malloc initialization`); aebae0537dcb408100b88c6b7647a7e858c43237, `BZ 11929`. Is this all kosher for us? See [[!message-id "87mxd9hl2n.fsf@kepler.schwinge.homeip.net"]]. * [OK] 83cd14204559abbb52635006832eaf4d2f42514a (`Remove --wth-tls option, TLS support is required`). * a7c8e6a1478de9f990b11e5e853318ccbe4330f2 (`Fix invalid conversion in __cmsg_nxthdr`). Probably just a C++ thing and not relevant for us; see [[!message-id "87r52nk1kx.fsf@kepler.schwinge.homeip.net"]]. * [low] `mmap`, 110946e473b38fc3896212e416d9d7064fecd5b7. Kosher with respect to our [[glibc/mmap]] peculiarities? * [OK] `__attribute__ ((__leaf__))`, `BZ #13344`, aa78043a4aafe5db1a1a76d544a833b63b4c5f5c + 49a43d80ec5c97cf6136b1ee2687414773b2d5aa + 3871f58f065dac3917eb18220a479e9591769c8c + 9beb2334930db81ceada5aa6051fe5ac0554db32 + 0ffc4f3ebaace42cd545db55a2ac50b6e0cc7d89 + edc5984d4d18296d7aa3d8f4ed8f7336a743170e + 57769839788e2c62b68d9dfbf4b35052321278ba. . * [low] `conformtest`, 3134156779108fe8b46e0f4cd60d837572faaa93 + 4efeffc1d583597e4f52985b9747269e47b754e2 + d94a4670800de6e8f088b8630ad5142866127980 -- takes 1.75 h (out of 2.75 h total) on coulomb.SCHWINGE -- disable? Should probably mirror `bits/siginfo.h` changes. * [low] stack guard, 6c6a98c983c44b440ae66d2aa8f32529a9dd7bfe, [[!message-id "4F3BE241.9090409@mentor.com"]] -- anything needed for us? * [low] `libc-lockP.h` 9463518d0d314d7bd0160315e0ef30e15be08985 -- probably should do similar changes, also to the generic file. * [low] `bits/socket.h`/`bits/socket_type.h` [[!message-id "Pine.LNX.4.64.1203090206420.18868@digraph.polyomino.org.uk"]] 02a6f887cb3e2c048937111eb4cf150d397609de -- probably should do the same for the generic version as used by GNU Hurd. * [log] CFI for `_start`, 6a1bd2a100c958d30bbfe8c9b8f9071d24b7c3f4, [[!message-id "20120316180551.GA6291@host2.jankratochvil.net"]] -- what about other architectures? * *baseline* * [high] `sendmmsg` usage, c030f70c8796c7743c3aa97d6beff3bd5b8dcd5d -- need a `ENOSYS` stub. # Build Here's a log of a glibc build run; this is from our [[Git repository's d7294bbed51242338c4e9c15e1ee74a763259faf (2012-06-21; 2012-03-28) ([[!message-id "878vfhdapq.fsf@schwinge.name"]] applied) sources|source_repositories/glibc]], run on coulomb.SCHWINGE. $ export LC_ALL=C $ ../Roger_Whittaker/configure AUTOCONF=: --prefix=/usr --disable-profile --disable-multi-arch --build=i486-gnu --host=i486-gnu CC=gcc-4.6 CXX=g++-4.6 2>&1 | tee log_build [...] $ make install_root=/INVALID 2>&1 | tee log_build_ [...] This takes up around 500 MiB and needs roughly X min on kepler.SCHWINGE and 100 min on coulomb.SCHWINGE. ## Analysis $ toolchain/logs/process gcc build fetch coulomb.SCHWINGE TODO. * With GCC 4.5, there's a ton of these warnings: hurd/hurd.h: In function '__hurd_fail': hurd/hurd.h:73: warning: case value '0' not in enumerated type 'error_t' ... as well as a few individual instances: hurdselect.c: In function '_hurd_select': hurdselect.c:265: warning: case value '0' not in enumerated type 'error_t' get-host.c: In function '_hurd_get_host_config': get-host.c:38: warning: case value '0' not in enumerated type 'error_t' hurdmsg.c: In function '_S_msg_get_init_ints': hurdmsg.c:186: warning: case value '0' not in enumerated type 'error_t' hurdmsg.c: In function '_S_msg_set_init_ints': hurdmsg.c:273: warning: case value '0' not in enumerated type 'error_t' intr-msg.c: In function '_hurd_intr_rpc_mach_msg': intr-msg.c:363: warning: case value '0' not in enumerated type 'error_t' sysdeps/mach/hurd/setitimer.c: In function 'timer_thread': sysdeps/mach/hurd/setitimer.c:117: warning: case value '0' not in enumerated type 'error_t' sysdeps/mach/hurd/wait4.c: In function '__wait4': sysdeps/mach/hurd/wait4.c:40: warning: case value '0' not in enumerated type 'error_t' sysdeps/mach/hurd/fork.c: In function '__fork': sysdeps/mach/hurd/fork.c:423: warning: case value '0' not in enumerated type 'error_t' sysdeps/mach/hurd/spawni.c: In function '__spawni': sysdeps/mach/hurd/spawni.c:600: warning: case value '0' not in enumerated type 'error_t' sysdeps/mach/hurd/setpriority.c: In function 'setonepriority': sysdeps/mach/hurd/setpriority.c:66: warning: case value '0' not in enumerated type 'error_t' sysdeps/mach/hurd/ioctl.c: In function 'send_rpc': sysdeps/mach/hurd/ioctl.c:177: warning: case value '0' not in enumerated type 'error_t' sysdeps/mach/hurd/ioctl.c: In function '__ioctl': sysdeps/mach/hurd/ioctl.c:306: warning: case value '0' not in enumerated type 'error_t' * baseline fd5bdc0924e0cfd1688b632068c1b26f3b0c88da..2ba92745c36eb3c3f3af0ce1b0aebd255c63a13b introduces: genops.c: In function '_IO_flush_all_lockp': genops.c:869:3: warning: passing argument 1 of '__save_FCT' makes pointer from integer without a cast [enabled by default] genops.c:869:3: note: expected 'void *' but argument is of type 'int' A similar warning has already been (and still is) seen here: dl-iteratephdr.c:83:3: warning: passing argument 1 of '__save_FCT' makes pointer from integer without a cast [enabled by default] dl-iteratephdr.c:83:3: note: expected 'void *' but argument is of type 'int' * baseline fd5bdc0924e0cfd1688b632068c1b26f3b0c88da..2ba92745c36eb3c3f3af0ce1b0aebd255c63a13b (or probably Samuel's mmap backport) introduces: ../sysdeps/mach/hurd/mmap.c: In function '__mmap': ../sysdeps/mach/hurd/mmap.c:54:15: warning: comparison between pointer and integer [enabled by default] ../sysdeps/mach/hurd/mmap.c:66:21: warning: comparison between pointer and integer [enabled by default] ../sysdeps/mach/hurd/mmap.c:143:13: warning: comparison between pointer and integer [enabled by default] ../sysdeps/mach/hurd/mmap.c:165:24: warning: comparison between pointer and integer [enabled by default] * baseline fd5bdc0924e0cfd1688b632068c1b26f3b0c88da..2ba92745c36eb3c3f3af0ce1b0aebd255c63a13b introduces: ../sysdeps/i386/fpu/bits/fenv.h: Assembler messages: ../sysdeps/i386/fpu/bits/fenv.h:125: Warning: translating to `fdivp %st,%st(1)' Should be fixed as of 2012-04-16. * baseline fd5bdc0924e0cfd1688b632068c1b26f3b0c88da..2ba92745c36eb3c3f3af0ce1b0aebd255c63a13b introduces: nscd_gethst_r.c: In function '__nscd_get_nl_timestamp': nscd_gethst_r.c:112:4: warning: implicit declaration of function 'time' [-Wimplicit-function-declaration] This was already present before: nscd_gethst_r.c: In function 'nscd_gethst_r': nscd_gethst_r.c:426:5: warning: implicit declaration of function '__close' [-Wimplicit-function-declaration] * baseline 2ba92745c36eb3c3f3af0ce1b0aebd255c63a13b..7a270350a9bc3110cd5ba12bbd8c5c8c365e0032 introduces: In file included from regex.c:62:0: regcomp.c: In function 'init_word_char': regcomp.c:935:4: warning: large integer implicitly truncated to unsigned type [-Woverflow] regcomp.c:936:4: warning: large integer implicitly truncated to unsigned type [-Woverflow] In file included from pldd.c:230:0: pldd-xx.c:26:0: warning: "static_assert" redefined [enabled by default] ../assert/assert.h:119:0: note: this is the location of the previous definition Should be fixed as of 2012-04-16. tst-relsort1.c:6:1: warning: function declaration isn't a prototype [-Wstrict-prototypes] # Install TODO. $ make install_root="$PWD".install install 2>&1 | tee log_install [...] This takes up around 100 MiB, and needs roughly X min on kepler.SCHWINGE and 18 min on coulomb.SCHWINGE. ## Analysis $ toolchain/logs/process gcc install fetch coulomb.SCHWINGE TODO. # Testsuite $ make -k install_root=/INVALID check 2>&1 | tee log_test [...] This needs roughly X h on kepler.SCHWINGE and 2.75 h on coulomb.SCHWINGE. ## Analysis $ toolchain/logs/process gcc test fetch coulomb.SCHWINGE There is quite a baseline of failures. ### Additional Failures Compared to Debian $ bash ~/tmp/glibc/debian/eglibc-2.13/debian/testsuite-checking/convertlog.sh log_test > log_test.filtered $ bash ~/tmp/glibc/debian/eglibc-2.13/debian/testsuite-checking/compare.sh ~/tmp/glibc/debian/eglibc-2.13/debian/testsuite-checking/expected-results-i486-gnu-libc log_test.filtered * `bug-atexit3.out`, `debug/tst-chk4`, `debug/tst-chk5`, `debug/tst-chk6`, `debug/tst-lfschk4`, `debug/tst-lfschk5`, `debug/tst-lfschk6` dlopen failed: libstdc++.so.6: cannot open shared object file: No such file or directory See [[!message-id "20090420002344.11798.qmail@s461.sureserver.com"]]. Hacked around with `ln -s /usr/lib/i386-*gnu/libstdc++.so.6 /lib/i386-*gnu/libpthread-stubs.so.0 /lib/i386-*gnu/libgcc_s.so.1 ./`. This is a bug in the glibc test harness. Should probably use some `configure` magic akin to the `fixincludes` stuff (`gcc-4.4 -print-file-name=libstdc++.so.6`, etc.). * `debug/tst-chk4`, `debug/tst-chk5`, `debug/tst-chk6`, `debug/tst-lfschk4`, `debug/tst-lfschk5`, `debug/tst-lfschk6` Fail in the same way as the C ones, `tst-chk1..3`. * `io/ftwtest`, `posix/globtest`, `iconvdata/iconv-test`, `intl/tst-gettext`, `malloc/tst-mtrace`, `elf/tst-pathopt`, `iconvdata/tst-tables`, `grp/tst_fgetgrent`, `dlfcn/tststatic`, `dlfcn/tststatic2`, `posix/wordexp-tst`, `localedata/bug-setlocale1.out`, `posix/tst-getconf` /home/thomas/tmp/glibc/tschwinge/Roger_Whittaker.build-gcc-4.4-486.O/io/ftwtest: error while loading shared libraries: libmachuser.so.1: cannot open shared object file: No such file or directory Looking into `localedata/bug-setlocale1.c`, it is clear what it going on: only the root of the build directory is added for `--library-path`, but none of the other directories that are additionally used. This is a bug in the glibc test harness. Hacked around by `ln -s mach/libmachuser.so.1 hurd/libhurduser.so.0.3 ./`. Hopefully the other instances are similar. * `posix/tst-getconf` Ends with: getconf POSIX_ALLOC_SIZE_MIN /: /home/thomas/tmp/glibc/tschwinge/Roger_Whittaker.build-gcc-4.4-486/posix/getconf: pathconf: /: Invalid argument * `dlfcn/tststatic`, `dlfcn/tststatic2` No output, SEGFAULT. * `math/test-idouble`, `math/test-ifloat`, `math/test-ildoubl`, `math/test-ldouble` SIGSEGV. * `rt/tst-aio10`, `rt/tst-aio9` /home/thomas/tmp/glibc/tschwinge/Roger_Whittaker.build-gcc-4.4-486.O/rt/tst-aio10.o: In function `do_test': tst-aio10.c:(.text+0x1b): undefined reference to `pthread_self' tst-aio10.c:(.text+0x78): undefined reference to `pthread_barrier_init' tst-aio10.c:(.text+0xf7): undefined reference to `pthread_create' tst-aio10.c:(.text+0x10b): undefined reference to `pthread_barrier_wait' /home/thomas/tmp/glibc/tschwinge/Roger_Whittaker.build-gcc-4.4-486.O/rt/tst-aio10.o: In function `tf': tst-aio10.c:(.text+0x5ae): undefined reference to `pthread_barrier_wait' tst-aio10.c:(.text+0x5ef): undefined reference to `pthread_kill' collect2: ld returned 1 exit status make[2]: *** [/home/thomas/tmp/glibc/tschwinge/Roger_Whittaker.build-gcc-4.4-486.O/rt/tst-aio10] Error 1 * `rt-tst-aio2`, `rt-tst-aio3`, `rt/tst-mqueue3`, `rt/tst-mqueue6`, `rt/tst-mqueue8`, `elf/tst-thrlock`, `rt/tst-timer3`, `nss//libnss_test1.so` Compilation: missing `pthread_attr_init`, `pthread_barrier_init`, `pthread_create`, etc. * `elf/tst-audit1`, `elf/tst-audit2` SIGKILL. * `inet/tst-ether_line` tst-ether_line.c:19: error: 'ETH_ALEN' undeclared (first use in this function) Will either need a `hurd/netinet/if_ether.h` that includes ``, or can do that in the generic `netinet/if_ether.h`? See also [[!sourceware_bug 11142]]. * `gmon/tst-sprofil` Floating point exception * `posix/bug-regex31-mem`, `posix/tst-fnmatch-mem` *output* files: some memory not freed. * `assert/test-assert.out` Fails sometimes... * `stdlib/bug-getcontext.out` getcontext failed, errno: 1073741902. Is not implemented; see above. * `elf/tst-unique3lib.so`, `elf/tst-unique3lib2.so`, `elf/tst-unique4lib.so` Only with GCC 4.4; no longer with 4.5 or 4.6: /home/thomas/tmp/glibc/tschwinge/Roger_Whittaker.build-gcc-4.4-486/elf/tst-unique3lib.os:(.data.DW.ref.__gxx_personality_v0[DW.ref.__gxx_personality_v0]+0x0): undefined reference to `__gxx_personality_v0' * `math/test-fenv.out` Used to fail (is listed in Debian eglibc-2.13-21's `expected-results-i486-gnu-libc`), but something between 22bcba37dd3b782b1a1ec7bf51da468e48f4d2eb and 005b7594ffe209639dd1ef2b9ed9a4c22307dec1 causes it to passe -- very likely Jérémie's signaling work. * `posix/tst-waitid.out` Fails sometimes (is listed in Debian eglibc-2.13-21's `expected-results-i486-gnu-libc`). * `elf/tst-unused-dep.out` (1f393a11f65dcaa1952bdcaf0317a65a5f8aff9d, [[!sourceware_bug 13706]], [[!message-id "4F4210C1.1090704@redhat.com"]]) Unused direct dependencies: /home/thomas/tmp/glibc/tschwinge/Roger_Whittaker.build-gcc-4.6-486/dlfcn/libdl.so.2 ## OLD `configure --without-cvs --prefix= --disable-profile --build=i486-gnu --host=i486-gnu` `make -k check` changes from 538603af899057a9ef9583cc447804ec602a45e5 to c9fd33ef070def49c078c94f8d9bc9f8a8e267f7. Configured with `--prefix=/usr` instead of `--prefix=`. Resolved failures: * localedata/tst_mblen.out * localedata/tst_mbrlen.out * localedata/tst_mbrtowc.out * localedata/tst_mbsrtowcs.out * localedata/tst_mbstowcs.out * localedata/tst_mbtowc.out * localedata/tst_swscanf.out * localedata/tst_wcrtomb.out * localedata/tst_wcsrtombs.out * localedata/tst_wcstombs.out * localedata/tst_wctob.out * localedata/tst_wctomb.out * localedata/bug-iconv-trans.out * localedata/tst-wctype.out * math/test-float.out * math/test-double.out * posix/tst-vfork3-mem * io/tst-mkdirat.out New: * A lot of `error while loading shared libraries: libmachuser.so.1: cannot open shared object file: No such file or directory`. Is it perhaps picking that library up from `$prefix/lib/`? New failures; likely due to that: * iconvdata/iconv-test.out * iconvdata/tst-tables.out * malloc/tst-mtrace.out * grp/tst_fgetgrent.out * posix/globtest.out * posix/wordexp-tst.out * io/ftwtest.out * elf/tst-pathopt.out Changed failures; likely due to that: * debug/tst-chk4.out / debug/tst-chk5.out -error while loading shared libraries: libstdc++.so.6: cannot open shared object file: No such file or directory +error while loading shared libraries: libpthread-stubs.so.0: cannot open shared object file: No such file or directory --- Changes to b367d4f996512af6841c3cefdb943cb0a826a6a1: nothing interesting. --- Changes to b85c54a1f7e5241c1ef99dfeaecbd1bf4117564f: nothing interesting. New failures: * posix/bug-glob3.out (SEGFAULT; but also on Linux) * wctype/bug-wctypeh.o (compile error; but also on Linux)