aboutsummaryrefslogtreecommitdiff
AgeCommit message (Collapse)Author
2015-05-23Don't build ld.so with -Wl,-z,nowhjl/pr18422H.J. Lu
PLT entries aren't required when -z now used. Linker on master with: commit 25070364b0ce33eed46aa5d78ebebbec6accec7e Author: H.J. Lu <hjl.tools@gmail.com> Date: Sat May 16 07:00:21 2015 -0700 Don't generate PLT relocations for now binding There is no need for PLT relocations with -z now. We can use GOT relocations, which take less space, instead and replace 16-byte .plt entres with 8-byte .plt.got entries. bfd/ * elf32-i386.c (elf_i386_check_relocs): Create .plt.got section for now binding. (elf_i386_allocate_dynrelocs): Use .plt.got section for now binding. * elf64-x86-64.c (elf_x86_64_check_relocs): Create .plt.got section for now binding. (elf_x86_64_allocate_dynrelocs): Use .plt.got section for now binding. won't generate PLT entries with -z now. elf/tst-audit2.c has /* This calloc definition will be called by the dynamic linker itself. We test that it has initialized our TLS block by the time it does so. */ void * calloc (size_t n, size_t m) { if (magic[0] != MAGIC1 || magic[1] != MAGIC2) { printf ("{%x, %x} != {%x, %x}\n", magic[0], magic[1], MAGIC1, MAGIC2); abort (); } magic[0] = MAGIC2; magic[1] = MAGIC1; Since ld.so is built with -z now, there are no PLT relocations and this calloc won't be used: Relocation section '.rela.dyn' at offset 0x66c contains 16 entries: Offset Info Type Sym.Value Sym. Name + Addend 00222e88 00000008 R_X86_64_RELATIVE 10970 00222e8c 00000008 R_X86_64_RELATIVE f8f0 00222e90 00000008 R_X86_64_RELATIVE f6c0 00222e94 00000008 R_X86_64_RELATIVE 11bd0 00222e98 00000008 R_X86_64_RELATIVE a1b0 00222e9c 00000008 R_X86_64_RELATIVE 130c0 00222ea0 00000008 R_X86_64_RELATIVE 13c50 00222ea4 00000008 R_X86_64_RELATIVE 15fc0 00222ea8 00000008 R_X86_64_RELATIVE 12cd0 00222eac 00000008 R_X86_64_RELATIVE 17f90 00222fbc 00000a06 R_X86_64_GLOB_DAT 00018230 __libc_memalign@@GLIBC_2.16 + 0 00222fc4 00001506 R_X86_64_GLOB_DAT 00018300 malloc@@GLIBC_2.16 + 0 00222fcc 00000d06 R_X86_64_GLOB_DAT 00018310 calloc@@GLIBC_2.16 + 0 00222fd4 00000506 R_X86_64_GLOB_DAT 000184a0 realloc@@GLIBC_2.16 + 0 00222fdc 00000706 R_X86_64_GLOB_DAT 002239a0 _r_debug@@GLIBC_2.16 + 0 00222fe4 00000406 R_X86_64_GLOB_DAT 00018340 free@@GLIBC_2.16 + 0 Assuming we do want to keep PLT relocations in ld.so so that malloc functions in ld.so can be overridden, ld.so should be built with -z now. There is no reason to build ld.so with -z now since ld.so is the one doing BIND_NOW. The only thing we get with -z now on ld.so is DT tag: 0x0000000000000018 (BIND_NOW) 0x000000006ffffffb (FLAGS_1) Flags: NOW This patch removes -Wl,-z,now from ld.so build. [BZ #18422] * elf/Makefile (z-now-yes): Removed. ($(objpfx)ld.so): Remove $(z-now-$(bind-now)).
2015-05-22Don't issue an error if DT_PLTRELSZ is missingH.J. Lu
A shared object doesn't need PLT if there are no PLT relocations. It shouldn't be an error if DT_PLTRELSZ is missing. [BZ #18410] * elf/dl-reloc.c (_dl_relocate_object): Don't issue an error for missing DT_PLTRELSZ.
2015-05-22Remove obsolete aliases that broke 'locale -a'Paul Eggert
[BZ #18412] * intl/locale.alias: Remove obsolete aliases "bokmål" and "français" which caused 'locale -a' to output Latin-1 data in UTF-8 locales, breaking some applications that use 'locale -a' output. Change the encoding of this file from Latin-1 to ASCII to avoid other potential problems with people grepping this file.
2015-05-22Remove socket.S implementationAdhemerval Zanella
This patch removes the socket.S implementation for all ports and replace it by a C implementation using socketcall. For ports that implement the syscall directly, there is no change. The patch idea is to simplify the socket function implementation that uses the socketcall to be based on C implemetation instead of a pseudo assembly implementation with arch specific parts. The patch then remove the assembly implementatation for the ports which uses socketcall (i386, microblaze, mips, powerpc, sparc, m68k, s390 and sh). I have cross-build GLIBC for afore-mentioned ports and tested on both i386 and ppc32 without regressions.
2015-05-22Fix soft-fp fma for -Wuninitialized.Joseph Myers
The soft-fp implementations of fma produce -Wuninitialized warnings because, in the cases where the result is not a nonzero finite value, the soft-fp does not set the exponent of the result since the (cooked) packing will do so, but the compiler does not then see that the exponent is always set in packing before it's used if it wasn't set earlier. This patch uses DIAG_* macros to suppress those warnings. Tested for mips64. (In fact this allows the mips64 build to complete with the -Wno-uninitialized removed from math/Makefile, but more cleanups are still needed in the ldbl-128ibm code for uninitialized warnings there.) * soft-fp/fmadf4.c: Include <libc-internal.h>. (__fma): Ignore uninitialized warnings around packing. * soft-fp/fmasf4.c: Include <libc-internal.h>. (__fmaf): Ignore uninitialized warnings around packing. * soft-fp/fmatf4.c: Include <libc-internal.h>. (__fmal): Ignore uninitialized warnings around packing.
2015-05-22Fix ldbl-128 / ldbl-128ibm tanl for -Wuninitialized.Joseph Myers
The ldbl-128 and ldbl-128ibm implementations of tanl produce uninitialized variable warnings with -Wuninitialized because of a variable that is initialized only conditionally, then used under the same conditions under which it is set. This patch uses DIAG_* macros to suppress those warnings. Tested for powerpc and mips64. * sysdeps/ieee754/ldbl-128/k_tanl.c: Include <libc-internal.h>. (__kernel_tanl): Ignore uninitialized warnings around use of SIGN. * sysdeps/ieee754/ldbl-128ibm/k_tanl.c: Include <libc-internal.h>. (__kernel_tanl): Ignore uninitialized warnings around use of SIGN.
2015-05-22Fix ldbl-128 / ldbl-128ibm erfcl for -WuninitializedJoseph Myers
The ldbl-128 and ldbl-128ibm implementations of erfcl produce uninitialized variable warnings with -Wuninitialized because of switch statements where in fact one of the cases will always be executed, but the compiler does not see that these cases cover all possibilities (and because the reasoning that it does involves inequalities on the representation of a floating point value leading to a set of possible values for 8.0 times that value, converted to int, it's highly nontrivial for the compiler to see that). This patch fixes those warnings by converting the last case in those switch statements to a "default" case. Tested for powerpc and mips64. * sysdeps/ieee754/ldbl-128/s_erfl.c (__erfcl): Make case 9 in switch statement into default case. * sysdeps/ieee754/ldbl-128ibm/s_erfl.c (__erfcl): Likewise.
2015-05-22Fix ldbl-128 / ldbl-128ibm asinl for -Wuninitialized.Joseph Myers
The ldbl-128 and ldbl-128ibm implementations of asinl produce uninitialized variable warnings with -Wuninitialized because the code for small arguments in fact always returns but the compiler cannot see this and instead sees that a variable would be uninitialized if the "if (huge + x > one)" conditional used to force the "inexact" exception were false. All the code in libm trying to force "inexact" for functions that are not exactly defined is suspect and should be removed at some point given that we now have a clear definition of the accuracy goals for libm functions which, following C99/C11, does not require anything about "inexact" for most functions (likewise, the multi-precision code that tries to give correctly-rounded results, very slowly, for functions for which the goals clearly do not include correct rounding, if the faster paths are accurate enough). However, for now this patch simply changes the code to use math_force_eval, rather than "if", to ensure the evaluation of the inexact computation. Tested for powerpc and mips64. * sysdeps/ieee754/ldbl-128/e_asinl.c (__ieee754_asinl): Don't use a conditional in forcing "inexact". * sysdeps/ieee754/ldbl-128ibm/e_asinl.c (__ieee754_asinl): Likewise.
2015-05-22Fix nptl-init.c use of INTERNAL_SYSCALL_DECL.Roland McGrath
2015-05-22Restore _POSIX2_C_VERSION definition (bug 438).Joseph Myers
My review of conformtest expectations for POSIX showed up that the _POSIX2_C_VERSION macro, required by POSIX and XPG standards before 2001, was missing in unistd.h, having been removed on 2003-04-03 despite those standards still being supported. This patch adds it back. As it's in the implementation namespace, there's no need for it to be conditional, and other such macros aren't conditional in this header either. Tested for x86_64 and x86 (testsuite). Note that this *does* change the installed libraries, because it affects the sysconf support (present all along) for _SC_2_C_VERSION. [BZ #438] * posix/unistd.h (_POSIX2_C_VERSION): New macro. * conform/Makefile (test-xfail-POSIX/unistd.h/conform): Remove variable.
2015-05-22Fix pathconf basename namespace (bug 18444).Joseph Myers
pathconf (sysdeps/unix/sysv/linux/pathconf.c) uses basename. But pathconf is in POSIX back to 1990 while basename is only reserved with external linkage in those standards including XPG functions. This patch fixes this namespace issue in the usual way, renaming basename to __basename and making it into a weak alias. Tested for x86_64 and x86 (testsuite, and that disassembly of installed shared libraries is unchanged by the patch). [BZ #18444] * string/basename.c (basename): Rename to __basename and define as weak alias of __basename. Use libc_hidden_weak. * include/string.h (__basename): Declare. Use libc_hidden_proto. * sysdeps/unix/sysv/linux/pathconf.c (distinguish_extX): Call __basename instead of basename. * conform/Makefile (test-xfail-POSIX2008/unistd.h/linknamespace): Remove variable. (test-xfail-XOPEN2K8/unistd.h/linknamespace): Likewise.
2015-05-22Fix indentation to match nesting in previous commitFlorian Weimer
2015-05-22Avoid some aliasing violations in libioFlorian Weimer
2015-05-21Fix lgamma implementations for -Wuninitialized.Joseph Myers
If you remove the "override CFLAGS += -Wno-uninitialized" in math/Makefile, you get errors from lgamma implementations of the form: ../sysdeps/ieee754/dbl-64/e_lgamma_r.c: In function '__ieee754_lgamma_r': ../sysdeps/ieee754/dbl-64/e_lgamma_r.c:297:13: error: 'nadj' may be used uninitialized in this function [-Werror=maybe-uninitialized] if(hx<0) r = nadj - r; This is one of the standard kinds of false positive uninitialized warnings: nadj is set under a certain condition, and then later used under the same condition. This patch uses DIAG_* macros to suppress the warning on the use of nadj. The ldbl-128 / ldbl-128ibm implementation has a substantially different structure that avoids this issue. Tested for x86_64. (In fact this patch eliminates the need for that -Wno-uninitialized on x86_64, but I want to test on more architectures before removing it.) * sysdeps/ieee754/dbl-64/e_lgamma_r.c: Include <libc-internal.h>. (__ieee754_lgamma_r): Ignore uninitialized warnings around use of NADJ. * sysdeps/ieee754/flt-32/e_lgammaf_r.c: Include <libc-internal.h>. (__ieee754_lgammaf_r): Ignore uninitialized warnings around use of NADJ. * sysdeps/ieee754/ldbl-96/e_lgammal_r.c: Include <libc-internal.h>. (__ieee754_lgammal_r): Ignore uninitialized warnings around use of NADJ.
2015-05-21Fix sysdeps/ieee754/dbl-64/mpa.c for -Wuninitialized.Joseph Myers
If you remove the "override CFLAGS += -Wno-uninitialized" in math/Makefile, one of the errors you get is: ../sysdeps/ieee754/dbl-64/mpa.c: In function '__mp_dbl.part.0': ../sysdeps/ieee754/dbl-64/mpa.c:183:5: error: 'c' may be used uninitialized in this function [-Werror=maybe-uninitialized] c *= X[0]; The problem is that the p < 5 case initializes c if p is 1, 2, 3 or 4 but not otherwise, and in fact p is positive for all calls to this function so the uninitialized case can't actually occur. This patch replaces the "if (p == 4)" last case with a comment so the compiler can see that all paths do initialize c. Tested for x86_64. * sysdeps/ieee754/dbl-64/mpa.c (norm): Remove if condition on (p == 4) case.
2015-05-21linknamespace: whitelist re_syntax_options.Joseph Myers
This patch adds re_syntax_options (bug 18442) to the set of symbols that are whitelisted in the linknamespace tests because, while the references to them are genuine bugs that should be fixed, the involvement of data symbols makes them harder to fix than most such bugs. Tested for x86_64 and x86. * conform/linknamespace.pl (@whitelist): Add re_syntax_options. * conform/Makefile (test-xfail-UNIX98/regex.h/linknamespace): Remove variable. (test-xfail-XOPEN2K/regex.h/linknamespace): Likewise. (test-xfail-POSIX2008/regex.h/linknamespace): Likewise. (test-xfail-XOPEN2K8/regex.h/linknamespace): Likewise.
2015-05-21vfprintf: Remove label name switching for the jump tableFlorian Weimer
Different labels are no longer needed because the tables are now in separate functions.
2015-05-21vfprintf: Introduce printf_positional functionFlorian Weimer
This splits a considerable chunk of code from the main vfprintf function. This will make it easier to remove the use of extend_alloca from the positional argument handling code.
2015-05-21vfprintf: Move jump table definition and the macros out of functionFlorian Weimer
The second jump table will be moved to a separate function in the next commit.
2015-05-21Add sprintf benchmark.Carlos O'Donell
Tests position and non-positional arguments with two test string.
2015-05-21Simplify handling of nameserver configuration in resolverAndreas Schwab
Remove use of ext.nsmap member of struct __res_state and always use an identity mapping betwen the nsaddr_list array and the ext.nsaddrs array. The fact that a nameserver has an IPv6 address is signalled by setting nsaddr_list[].sin_family to zero.
2015-05-20conformtest: use proper _POSIX_C_SOURCE value for POSIX.Joseph Myers
The conform/ tests were using -D_POSIX_C_SOURCE=199912 to test "POSIX" (1995/6). This patch changes them to use 199506L, the proper value from the relevant edition of POSIX. (This doesn't make any difference to features.h, but is the logically correct value to use.) Tested for x86_64. * conform/GlibcConform.pm ($CFLAGS{"POSIX"}): Use -D_POSIX_C_SOURCE=199506L.
2015-05-20conformtest: correct POSIX expectations for locale.h.Joseph Myers
When cleaning up conformtest expectations for POSIX for locale.h in <https://sourceware.org/ml/libc-alpha/2012-11/msg00382.html>, I missed that locale.h had contents defined in POSIX.2:1993 as well as POSIX.1:1995/6. Thus, LC_MESSAGES *should* in fact be required for POSIX, because POSIX.2 says so; this patch adds that expectation back. Tested for x86_64. * conform/data/locale.h-data [POSIX] (LC_MESSAGES): Require.
2015-05-20conformtest: clean up POSIX expectations for unistd.h.Joseph Myers
Concluding the series of patches to clean up conformtest expectations for "POSIX" (POSIX.1:1995/6, union with POSIX.2:1993), this patch cleans up expectations for unistd.h. Tested x86_64; the new XFAIL is for missing _POSIX2_C_VERSION. * conform/data/unistd.h-data (_POSIX_VERSION): Require. (_POSIX2_C_VERSION): Require if [POSIX || XPG3 || XPG4 || UNIX98]. Do not mention otherwise. [POSIX] (_XOPEN_VERSION): Do not expect. [POSIX] (_XOPEN_XCU_VERSION): Likewise. [POSIX] (_POSIX2_C_BIND): Likewise. [POSIX] (_POSIX2_VERSION): Likewise. [POSIX] (_XOPEN_XPG2): Likewise. [POSIX] (_XOPEN_XPG3): Likewise. [POSIX] (_XOPEN_XPG4): Likewise. [POSIX] (_XOPEN_UNIX): Likewise. [POSIX] (_POSIX_ADVISORY_INFO): Likewise. [POSIX] (_POSIX_BARRIERS): Likewise. [POSIX] (_POSIX_CLOCK_SELECTION): Likewise. [POSIX] (_POSIX_CPUTIME): Likewise. [POSIX] (_POSIX_MONOTONIC_CLOCK): Likewise. [POSIX] (_POSIX_READER_WRITER_LOCKS): Likewise. [POSIX] (_POSIX_SHELL): Likewise. [POSIX] (_POSIX_SPAWN): Likewise. [POSIX] (_POSIX_SPIN_LOCKS): Likewise. [POSIX] (_POSIX_SPORADIC_SERVER): Likewise. [POSIX] (_POSIX_THREAD_CPUTIME): Likewise. [POSIX] (_POSIX_TYPED_MEMORY_OBJECTS): Likewise. [POSIX] (_POSIX_THREAD_SPORADIC_SERVER): Likewise. [POSIX] (_XBS5_ILP32_OFF32): Likewise. [POSIX] (_XBS5_ILP32_OFBIG): Likewise. [POSIX] (_XBS5_LP64_OFF64): Likewise. [POSIX] (_XBS5_LPBIG_OFFBIG): Likewise. [POSIX] (_POSIX_TIMEOUTS): Likewise. [POSIX] (_POSIX2_PBS): Likewise. [POSIX] (_POSIX2_PBS_ACCOUNTING): Likewise. [POSIX] (_POSIX2_PBS_CHECKPOINT): Likewise. [POSIX] (_POSIX2_PBS_LOCATE): Likewise. [POSIX] (_POSIX2_PBS_MESSAGE): Likewise. [POSIX] (_POSIX2_PBS_TRACK): Likewise. [POSIX] (_POSIX_TIMESTAMP_RESOLUTION): Likewise. [POSIX] (_CS_XBS5_ILP32_OFF32_CFLAGS): Likewise. [POSIX] (_CS_XBS5_ILP32_OFF32_LDFLAGS): Likewise. [POSIX] (_CS_XBS5_ILP32_OFF32_LIBS): Likewise. [POSIX] (_CS_XBS5_ILP32_OFF32_LINTFLAGS): Likewise. [POSIX] (_CS_XBS5_ILP32_OFFBIG_CFLAGS): Likewise. [POSIX] (_CS_XBS5_ILP32_OFFBIG_LDFLAGS): Likewise. [POSIX] (_CS_XBS5_ILP32_OFFBIG_LIBS): Likewise. [POSIX] (_CS_XBS5_ILP32_OFFBIG_LINTFLAGS): Likewise. [POSIX] (_CS_XBS5_LP64_OFF64_CFLAGS): Likewise. [POSIX] (_CS_XBS5_LP64_OFF64_LDFLAGS): Likewise. [POSIX] (_CS_XBS5_LP64_OFF64_LIBS): Likewise. [POSIX] (_CS_XBS5_LP64_OFF64_LINTFLAGS): Likewise. [POSIX] (_CS_XBS5_LPBIG_OFFBIG_CFLAGS): Likewise. [POSIX] (_CS_XBS5_LPBIG_OFFBIG_LDFLAGS): Likewise. [POSIX] (_CS_XBS5_LPBIG_OFFBIG_LIBS): Likewise. [POSIX] (_CS_XBS5_LPBIG_OFFBIG_LINTFLAGS): Likewise. [POSIX] (_SC_2_C_BIND): Likewise. [POSIX] (_SC_2_C_VERSION): Likewise. [POSIX] (_SC_2_PBS): Likewise. [POSIX] (_SC_2_PBS_ACCOUNTING): Likewise. [POSIX] (_SC_2_PBS_CHECKPOINT): Likewise. [POSIX] (_SC_2_PBS_LOCATE): Likewise. [POSIX] (_SC_2_PBS_MESSAGE): Likewise. [POSIX] (_SC_2_PBS_TRACK): Likewise. [POSIX] (_SC_ATEXIT_MAX): Likewise. [POSIX] (_SC_BARRIERS): Likewise. [POSIX] (_SC_BASE): Likewise. [POSIX] (_SC_CLOCK_SELECTION): Likewise. [POSIX] (_SC_DEVICE_IO): Likewise. [POSIX] (_SC_DEVICE_SPECIFIC): Likewise. [POSIX] (_SC_DEVICE_SPECIFIC_R): Likewise. [POSIX] (_SC_FD_MGMT): Likewise. [POSIX] (_SC_FIFO): Likewise. [POSIX] (_SC_FILE_ATTRIBUTES): Likewise. [POSIX] (_SC_FILE_LOCKING): Likewise. [POSIX] (_SC_FILE_SYSTEM): Likewise. [POSIX] (_SC_IOV_MAX): Likewise. [POSIX] (_SC_MONOTONIC_CLOCK): Likewise. [POSIX] (_SC_NETWORKING): Likewise. [POSIX] (_SC_PAGE_SIZE): Likewise. [POSIX] (_SC_PASS_MAX): Likewise. [POSIX] (_SC_PIPE): Likewise. [POSIX] (_SC_READER_WRITER_LOCKS): Likewise. [POSIX] (_SC_REGEXP): Likewise. [POSIX] (_SC_SHELL): Likewise. [POSIX] (_SC_SIGNALS): Likewise. [POSIX] (_SC_SINGLE_PROCESS): Likewise. [POSIX] (_SC_SPIN_LOCKS): Likewise. [POSIX] (_SC_TYPED_MEMORY_OBJECTS): Likewise. [POSIX] (_SC_USER_GROUPS): Likewise. [POSIX] (_SC_USER_GROUPS_R): Likewise. [POSIX] (_SC_STREAMS): Likewise. [POSIX] (_SC_XBS5_ILP32_OFF32): Likewise. [POSIX] (_SC_XBS5_ILP32_OFFBIG): Likewise. [POSIX] (_SC_XBS5_LP64_OFF64): Likewise. [POSIX] (_SC_XBS5_LPBIG_OFFBIG): Likewise. [POSIX] (_SC_THREAD_ROBUST_PRIO_INHERIT): Likewise. [POSIX] (_SC_THREAD_ROBUST_PRIO_PROTECT): Likewise. [POSIX] (_PC_FILESIZEBITS): Likewise. [POSIX] (_PC_REC_INCR_XFER_SIZE): Likewise. [POSIX] (_PC_REC_MAX_XFER_SIZE): Likewise. [POSIX] (_PC_REC_MIN_XFER_SIZE): Likewise. [POSIX] (_PC_REC_XFER_ALIGN): Likewise. [POSIX] (uid_t): Likewise. [POSIX] (gid_t): Likewise. [POSIX] (off_t): Likewise. [POSIX] (pid_t): Likewise. [POSIX] (cuserid): Allow. (_SC_2_CHAR_TERM): Require constant. (_POSIX_ASYNCHRONOUS_IO): Remove duplicate optional-constant. * conform/Makefile (test-xfail-POSIX/unistd.h/conform): New variable.
2015-05-20NaCl: Set tid field to a unique value.Roland McGrath
2015-05-20Move usleep.c using nanosleep to sysdeps/posix.Roland McGrath
2015-05-20i386: Remove six-argument specialized implementationsAdhemerval Zanella
This patch removes the specialized i386 assembly implementations for fallocate{64}, pselect, and sync_file_range now that i386 have support for 6 argument syscalls.
2015-05-20Add missing math_private includes.Wilco Dijkstra
2015-05-19BZ#18434: Mark fixed in NEWS.Roland McGrath
2015-05-19Fix ldbl-96 remquol (finite, Inf) (bug 18244).Joseph Myers
ldbl-96 remquol wrongly handles the case where the first argument is finite and the second infinite, because the check for the second argument being a NaN fails to disregard the explicit high mantissa bit and so wrongly interprets an infinity as being a NaN. This patch fixes this by masking off that bit, and improves test coverage for both remainder and remquo (various cases were missing tests, or, as in the case of the bug, were tested only for one of the two functions). Tested for x86_64 and x86. [BZ #18244] * sysdeps/ieee754/ldbl-96/s_remquol.c (__remquol): Ignore explicit high mantissa bit when testing whether P is a NaN. * math/libm-test.inc (remainder_test_data): Add more tests. (remquo_test_data): Likewise.
2015-05-19Fix i386 atanhl spurious underflows (bug 18049).Joseph Myers
The i386 implementation of atanhl, for small arguments, does a calculation that involves computing twice the square of the argument, resulting in spurious underflows for some arguments. This patch fixes this by just returning the argument when its exponent is below -32, with underflow being forced as needed for subnormal arguments. Tested for x86 and x86_64. [BZ #18049] * sysdeps/i386/fpu/e_atanhl.S (__ieee754_atanhl): For exponents below -32, return the argument, with underflow if subnormal. * math/auto-libm-test-in: Add more tests of atanh. * math/auto-libm-test-out: Regenerated.
2015-05-19BZ#18434: Fix sem_post EOVERFLOW check for [!__HAVE_64B_ATOMICS].Roland McGrath
2015-05-20Fix typo in safety annotations in envz_removeSiddhesh Poyarekar
2015-05-19 * inet/rcmd.c (rresvport_af): Change ss to anonymous unionSteve Ellcey
in order to avoid strict alias warnings. (iruserok_af): Ditto for ra.
2015-05-19Fix for test "malloc_usable_size: expected 7 but got 11"James Lemke
[BZ #17581] The checking chain of unused chunks was terminated by a hash of the block pointer, which was sometimes confused with the chunk length byte. We now avoid using a length byte equal to the magic byte.
2015-05-19soft-fp: Fix alpha kernel build problemRichard Henderson
* soft-fp/op-common.h (_FP_FROM_INT): Don't write to R.
2015-05-19alpha: Update libm-test-ulpsRichard Henderson
2015-05-19Avoid deadlock in malloc on backtrace (BZ #16159)Siddhesh Poyarekar
When the malloc subsystem detects some kind of memory corruption, depending on the configuration it prints the error, a backtrace, a memory map and then aborts the process. In this process, the backtrace() call may result in a call to malloc, resulting in various kinds of problematic behavior. In one case, the malloc it calls may detect a corruption and call backtrace again, and a stack overflow may result due to the infinite recursion. In another case, the malloc it calls may deadlock on an arena lock with the malloc (or free, realloc, etc.) that detected the corruption. In yet another case, if the program is linked with pthreads, backtrace may do a pthread_once initialization, which deadlocks on itself. In all these cases, the program exit is not as intended. This is avoidable by marking the arena that malloc detected a corruption on, as unusable. The following patch does that. Features of this patch are as follows: - A flag is added to the mstate struct of the arena to indicate if the arena is corrupt. - The flag is checked whenever malloc functions try to get a lock on an arena. If the arena is unusable, a NULL is returned, causing the malloc to use mmap or try the next arena. - malloc_printerr sets the corrupt flag on the arena when it detects a corruption - free does not concern itself with the flag at all. It is not important since the backtrace workflow does not need free. A free in a parallel thread may cause another corruption, but that's not new - The flag check and set are not atomic and may race. This is fine since we don't care about contention during the flag check. We want to make sure that the malloc call in the backtrace does not trip on itself and all that action happens in the same thread and not across threads. I verified that the test case does not show any regressions due to this patch. I also ran the malloc benchmarks and found an insignificant difference in timings (< 2%). * malloc/Makefile (tests): New test case tst-malloc-backtrace. * malloc/arena.c (arena_lock): Check if arena is corrupt. (reused_arena): Find a non-corrupt arena. (heap_trim): Pass arena to unlink. * malloc/hooks.c (malloc_check_get_size): Pass arena to malloc_printerr. (top_check): Likewise. (free_check): Likewise. (realloc_check): Likewise. * malloc/malloc.c (malloc_printerr): Add arena argument. (unlink): Likewise. (munmap_chunk): Adjust. (ARENA_CORRUPTION_BIT): New macro. (arena_is_corrupt): Likewise. (set_arena_corrupt): Likewise. (sysmalloc): Use mmap if there are no usable arenas. (_int_malloc): Likewise. (__libc_malloc): Don't fail if arena_get returns NULL. (_mid_memalign): Likewise. (__libc_calloc): Likewise. (__libc_realloc): Adjust for additional argument to malloc_printerr. (_int_free): Likewise. (malloc_consolidate): Likewise. (_int_realloc): Likewise. (_int_memalign): Don't touch corrupt arenas. * malloc/tst-malloc-backtrace.c: New test case.
2015-05-19Succeed if make check does not report any errorsSiddhesh Poyarekar
The conditional that evaluates if there are any FAILed test cases currently always fails, since we ensure it fails if we find any unexpected results in tests.sum and it would obviously fail if it does not find failed results in tests.sum. This patch fixes this by simply inverting the result of the egrep, i.e. succeed if egrep fails (to find failed results) and fail if it succeeds. Tested with 'make subdirs=localedata check' and 'make subdirs=locale check' where all tests succeed and with 'make subdirs=elf check' where a couple of tests fail for me. * Makefile (summarize-tests): Fix return value on success.
2015-05-19Add envz_remove to the libc manualSiddhesh Poyarekar
I was told that Ma Shimao submitted a patch to add envz_remove to the libc manual, but the patch could not be accepted since he does not have a copyright assignment in place. I have been woefully behind on libc-alpha recently and have not seen the patch or the discussion thread. I have also not read the man page for envz_remove, so Alexandre Oliva asked me if I could write this independently and post a patch. The patch below is the result of the same - I have written it based on the implementation in string/envz.c and Alex told me via email that the function is AS, AC and MT-safe like envz_strip. I assume Alex and Carlos cannot review this since they have been tainted by the original patch (I haven't even tried to look for a link to it since I don't want to be tainted) so someone else will have to review this. If there are no reviewers till the end of the week, I will commit this since I believe there is a chance that there are no other reviewers who haven't read that thread. * manual/string.texi (Envz Functions): Add envz_remove.
2015-05-18Refactor opendir.Roland McGrath
2015-05-18Add *.pyc to .gitignoreSiddhesh Poyarekar
Ignore generated *.pyc files, particularly in the benchtests directory.
2015-05-18Ensure `wint_t' is defined before use in include/stdio.hArjun Shankar
While trying to get nptl/tst-initializers1.c to include the test skeleton, I came across a couple of speed bumps. Firstly: after making the appropriate changes to the test, running `make check' led to this error: > In file included from ../malloc/malloc.h:24:0, .. > from tst-initializers1.c:60: > ../include/stdio.h:111:1: error: unknown type name `wint_t' > extern wint_t __getwc_unlocked (FILE *__fp); So, `wint_t' is used before being defined. Question: Why did test-skeleton.c not cause this error in any of the other tests that include it? Anyway, I noticed include/stdio.h includes stddef.h, which in turn defines `wint_t', but only if `__need_wint_t' is defined. So I put in a `#define __need_wint_t' before the include to get rid of the error. Is that the correct fix? A subsequent `make && make check' led to this second error: > from tst-initializers1-c89.c:1: > ../test-skeleton.c: In function `main': > ../test-skeleton.c:356:11: error: `for' loop initial declarations are only > allowed in C99 mode > for (struct temp_name_list *n = temp_name_list; Although there seem to be several other C89 no-noes in test-skeleton.c, I needed only to fix this specific one for gcc-4.8.3 to stop complaining.
2015-05-17Fix stdlib/tst-setcontext3 with dash [BZ#18418]Adhemerval Zanella
This patch remove the non-portable array usage on tst-setcontext3.sh script.
2015-05-16Fail locale installation if localedef fails.Carlos O'Donell
If any locale fails to compile then the installation of locales via `make localedata/install-locales` also fails.
2015-05-16Fix bo_CN and bo_IN.Marko Myllynen
Both bo_CN and bo_IN were not compiling. The following fix gets them into a usable state again giving a clean build result for `make localedata/install-locales`.
2015-05-15Fix atanhl missing underflows (bug 16352).Joseph Myers
Similar to various other bugs in this area, some atanh implementations do not raise the underflow exception for subnormal arguments, when the result is tiny and inexact. This patch forces the exception in a similar way to previous fixes. (No change in this regard is needed for the i386 implementation; special handling to force underflows in these cases will only be needed there when the spurious underflows, bug 18049, get fixed.) Tested for x86_64, x86, powerpc and mips64. [BZ #16352] * sysdeps/i386/fpu/e_atanh.S (dbl_min): New object. (__ieee754_atanh): Force underflow exception for results with small absolute value. * sysdeps/i386/fpu/e_atanhf.S (flt_min): New object. (__ieee754_atanhf): Force underflow exception for results with small absolute value. * sysdeps/ieee754/dbl-64/e_atanh.c: Include <float.h>. (__ieee754_atanh): Force underflow exception for results with small absolute value. * sysdeps/ieee754/flt-32/e_atanhf.c: Include <float.h>. (__ieee754_atanhf): Force underflow exception for results with small absolute value. * sysdeps/ieee754/ldbl-128/e_atanhl.c: Include <float.h>. (__ieee754_atanhl): Force underflow exception for results with small absolute value. * sysdeps/ieee754/ldbl-128ibm/e_atanhl.c: Include <float.h>. (__ieee754_atanhl): Force underflow exception for results with small absolute value. * sysdeps/ieee754/ldbl-96/e_atanhl.c: Include <float.h>. (__ieee754_atanhl): Force underflow exception for results with small absolute value. * math/auto-libm-test-in: Do not allow missing underflow exceptions from atanh. * math/auto-libm-test-out: Regenerated.
2015-05-15Fix tanf spurious underflows (bug 18221).Joseph Myers
The flt-32 implementation of tanf produces spurious underflow exceptions for some small arguments, through computing values on the order of x^5. This patch fixes this by adjusting the threshold for returning x (or, as applicable, +/- 1/x) to 2**-13 (the next term in the power series being x^3/3). Tested for x86_64 and x86. [BZ #18221] * sysdeps/ieee754/flt-32/k_tanf.c (__kernel_tanf): Use 2**-13 not 2**-28 as threshold for returning x or +/- 1/x. * math/auto-libm-test-in: Add more tests of tan. * math/auto-libm-test-out: Regenerated.
2015-05-15Fix lgammaf spurious underflows (bug 18220).Joseph Myers
The flt-32 implementation of lgammaf produces spurious underflow exceptions for some large arguments, because of calculations involving x^-2 multiplied by small constants. This patch fixes this by adjusting the threshold for a simpler computation to 2**26 (the error in the simpler computation is on the order of 0.5 * log (x), for a result on the order of x * log (x)). Tested for x86_64 and x86. [BZ #18220] * sysdeps/ieee754/flt-32/e_lgammaf_r.c (__ieee754_lgammaf_r): Use 2**26 not 2**58 as threshold for returning x * (log (x) - 1). * math/auto-libm-test-in: Add another test of lgamma. * math/auto-libm-test-out: Regenerated.
2015-05-15Add BZ #16704 as fixedAdhemerval Zanella
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-02 23:51:05 +0000