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Building with GCC 7 produces an error building rpcgen:
rpc_parse.c: In function 'get_prog_declaration':
rpc_parse.c:543:25: error: may write a terminating nul past the end of the destination [-Werror=format-length=]
sprintf (name, "%s%d", ARGNAME, num); /* default name of argument */
~~~~^
rpc_parse.c:543:5: note: format output between 5 and 14 bytes into a destination of size 10
sprintf (name, "%s%d", ARGNAME, num); /* default name of argument */
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
That buffer overrun is for the case where the .x file declares a
program with a million arguments. The strcpy two lines above can
generate a buffer overrun much more simply for a long argument name.
The limit on length of line read by rpcgen (MAXLINESIZE == 1024)
provides a bound on the buffer size needed, so this patch just changes
the buffer size to MAXLINESIZE to avoid both possible buffer
overruns. A testcase is added that rpcgen does not crash with a
500-character argument name, where it previously crashed.
It would not at all surprise me if there are many other ways of
crashing rpcgen with either valid or invalid input; fuzz testing would
likely find various such bugs, though I don't think they are that
important to fix (rpcgen is not that likely to be used with untrusted
.x files as input). (As well as fuzz-findable bugs there are probably
also issues when various int variables get overflowed on very large
input.) The test infrastructure for rpcgen-not-crashing tests would
need extending if tests are to be added for cases where rpcgen should
produce an error, as opposed to cases where it should succeed.
Tested for x86_64 and x86.
[BZ #20790]
* sunrpc/rpc_parse.c (get_prog_declaration): Increase buffer size
to MAXLINESIZE.
* sunrpc/bug20790.x: New file.
* sunrpc/Makefile [$(run-built-tests) = yes] (rpcgen-tests): New
variable.
[$(run-built-tests) = yes] (tests-special): Add $(rpcgen-tests).
[$(run-built-tests) = yes] ($(rpcgen-tests)): New rule.
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This patch adds a localplt.data file for sh so that test passes. The
architecture-specific entries are for _Unwind_Find_FDE, _exit and
__errno_location.
Tested for sh3 and sh4.
* sysdeps/unix/sysv/linux/sh/localplt.data: New file.
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This patch adds a localplt.data file for hppa so that test passes.
Architecture maintainers should feel free to clean up the sysdeps code
so that some or all of the system-specific entries
libc.so: _exit
libc.so: __sigsetjmp
libc.so: _IO_funlockfile
libc.so: sigprocmask
libc.so: __errno_location
libpthread.so: __errno_location
are no longer needed.
Tested for hppa. Note: check-execstack and check-textrel still fail;
you may wish to look at those to get to a clean baseline there (they
are less obvious for people not familiar with the architecture).
* sysdeps/unix/sysv/linux/hppa/localplt.data: New file.
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This patch updates alpha localplt.data so the localplt test passes in
my compile-only all-ABIs glibc testing. The failures I see without
this patch are:
Missing required PLT reference: ld.so: __tls_get_addr
Missing required PLT reference: ld.so: free
Now, __tls_get_addr can be made optional. For free, rather than
making it optional as in libc.so it seems better to mark all the
malloc-related symbols in both libc.so and ld.so as allowing an
R_ALPHA_GLOB_DAT relocation as an alternative to using a PLT entry, so
this patch does so.
Tested for alpha.
* sysdeps/unix/sysv/linux/alpha/localplt.data: Make __tls_get_addr
optional in ld.so. Allow R_ALPHA_GLOB_DAT relocation for malloc,
calloc, realloc, free, memalign and __libc_memalign rather than
making them optional.
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This patch updates nios2 localplt.data so the localplt test passes in
my compile-only all-ABIs glibc testing. A new PLT entry for
__extendsfdf2 is added.
Tested for nios2.
* sysdeps/unix/sysv/linux/nios2/localplt.data: Add __extendsfdf2
for libc.so.
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This patch consolidates all Linux lseek/lseek64/llseek implementation
in on on sysdeps/unix/sysv/linux/lseek{64}.c. It also removes the llseek
file and instead consolidate the LFS lseek implementation on lseek64.c
as for other LFS symbols implementations.
The general idea is:
- lseek: ABIs that not define __OFF_T_MATCHES_OFF64_T will preferable
use __NR__llseek if kernel supports it, otherwise they will use __NR_lseek.
ABIs that defines __OFF_T_MATCHES_OFF64_T won't produce any symbol.
- lseek64: ABIs with __OFF_T_MATCHES_OFF64_T will preferable use __NR_lseek
(since it will use 64-bit arguments without low/high splitting) and
__NR__llseek if __NR_lseek is not defined (for some ILP32 ports).
- llseek: files will be removed and symbols will be aliased ot lseek64.
ABI without __OFF_T_MATCHES_OFF64_T and without __NR_llseek (basically MIPS64n32
so far) are covered by building lseek with off_t as expected and lseek64
using __NR_lseek (as expected for off64_t being passed using 64-bit registers).
For this consolidation I mantained the x32 assembly specific implementation
because to correctly fix this it would required both the x32 fix for
{INLINE,INTERNAL}_SYSCALL [1] and a wrapper to correctly subscribe it to
return 64 bits instead of default 32 bits (as for times). It could a future
cleanup.
It is based on my previous {INTERNAL,INLINE}_SYSCALL_CALL macro [2],
although it is mainly for simplification.
Tested on x86_64, i686, aarch64, armhf, and powerpc64le.
* nptl/Makefile (libpthread-routines): Remove ptw-llseek and add
ptw-lseek64.
* sysdeps/unix/sysv/linux/Makefile (sysdeps_routines): Remove llseek.
* sysdeps/unix/sysv/linux/alpha/Makefile (sysdeps_routines):
Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/llseek.c: Remove file.
* sysdeps/unix/sysv/linux/generic/wordsize-32/lseek.c: Remove file.
* sysdeps/unix/sysv/linux/mips/mips64/llseek.c: Likewise.
* sysdeps/unix/sysv/linux/llseek.c: Remove file.
* sysdeps/unix/sysv/linux/lseek.c: New file.
* sysdeps/unix/sysv/linux/lseek64.c: Add default Linux implementation.
* sysdeps/unix/sysv/linux/mips/mips64/syscalls.list: Remove lseek and
__libc_lseek64 from auto-generation.
* sysdeps/unix/sysv/linux/wordsize-64/syscalls.list: Likewise.
* sysdeps/unix/sysv/linux/x86_64/x32/lseek64.S: New file.
[1] https://sourceware.org/ml/libc-alpha/2016-08/msg00443.html
[2] https://sourceware.org/ml/libc-alpha/2016-08/msg00646.html
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Replaces calls to write on file descriptor 2 with calls to write_message,
which writes to STDOUT_FILENO (1) and properly deals with the return of
write.
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In the test cases, there are writes to stdout which do not check the result
value. This patch replaces such occurrences with calls to write_message,
which properly deals with the unused result.
Tested for powerpc64le.
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check-installed-headers tests were failing for x32 because of the x86
bits/sysctl.h containing a #error for x32. This patch makes the tests
ignore sys/sysctl.h for x32, similar to the other special-casing of
particular headers.
Tested for x86_64 (full testing for -m64, compile-only for x32).
* scripts/check-installed-headers.sh: Ignore sys/sysctl.h for x32.
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* sysdeps/unix/sysv/linux/alpha/kernel-features.h: #define
__ASSUME_ST_INO_64_BIT as 0
* sysdeps/unix/sysv/linux/sh/kernel-features.h: Likewise.
* sysdeps/unix/sysv/linux/fxstat64.c: Replace #ifdef with #if
over the code where __ASSUME_ST_INO_64_BIT is used.
* sysdeps/unix/sysv/linux/lxstat64.c: Likewise.
* sysdeps/unix/sysv/linux/xstat64.c: Likewise.
* sysdeps/unix/sysv/linux/xstatconv.c: Likewise.
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* test-skeleton.c: Document do_test usage.
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gconv.h is using a flex array to define the __gconv_info member in an
invalid way, causing GCC 7 to issue an error:
| In file included from ../include/gconv.h:1:0,
| from ../sysdeps/unix/sysv/linux/_G_config.h:32,
| from ../libio/libio.h:31,
| from ../include/libio.h:4,
| from ../libio/stdio.h:74,
| from ../include/stdio.h:5,
| from test-math-isinff.cc:22:
| ../iconv/gconv.h:142:50: error: flexible array member '__gconv_info::__data' not at end of 'struct _IO_codecvt'
| In file included from ../include/libio.h:4:0,
| from ../libio/stdio.h:74,
| from ../include/stdio.h:5,
| from test-math-isinff.cc:22:
| ../libio/libio.h:211:14: note: next member '_G_iconv_t _IO_codecvt::__cd_out' declared here
| ../libio/libio.h:187:8: note: in the definition of 'struct _IO_codecvt'
| In file included from ../include/gconv.h:1:0,
| from ../sysdeps/unix/sysv/linux/_G_config.h:32,
| from ../libio/libio.h:31,
| from ../include/libio.h:4,
| from ../libio/stdio.h:74,
| from ../include/stdio.h:5,
| from test-math-isinff.cc:22:
| ../iconv/gconv.h:142:50: error: flexible array member '__gconv_info::__data' not at end of 'struct _IO_wide_data'
| In file included from ../include/libio.h:4:0,
| from ../libio/stdio.h:74,
| from ../include/stdio.h:5,
| from test-math-isinff.cc:22:
| ../libio/libio.h:211:14: note: next member '_G_iconv_t _IO_codecvt::__cd_out' declared here
| ../libio/libio.h:215:8: note: in the definition of 'struct _IO_wide_data'
This is basically a revert to the code from 15 years ago. More details
are available in the GCC bug:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78039
Changelog:
* iconv/gconv.h (__gconv_info): Define __data element using a
zero-length array.
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* math/test-tgmath2.c: Split up test function.
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Testing with run-built-tests = no generates many UNRESOLVED results in
tests.sum (and so in the output of "make check"), for all the tests
that are only compiled and not run in such a configuration. This
doesn't seem useful in the "make check" output, and also causes "make
check" to exist with error status even when all tests that can be run
in such a configuration passed.
This patch changes it not to consider those tests when generating
subdir-tests.sum, and so tests.sum, so that you get a smaller number
of tests considered in the final results rather than a huge pile of
UNRESOLVED.
Tested with a cross-compiler to ARM in a run-built-tests = no
configuration.
* Rules (tests-expected): New variable, depending on
$(run-built-tests).
(tests): Pass $(tests-expected) to merge-test-results.sh, not
$(tests).
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The tests-unsupported variable lists tests that should neither be
compiled nor run, because some support needed to compile them is
missing.
The implementation of this feature involves having a rule to create
.out files for these tests that takes precedence over the default
rule. This does not work in the run-built-tests = no case (cross
compiling without use of a wrapper to run the tests on a separate
system, in which cases most tests are compiled only) because in that
case the tests target depends on $(tests) to ensure all tests get
compiled. This patch changes that dependency to filter out
$(tests-unsupported).
Tested with cross-compilation to ARM with GCC 5, where libstdc++ is
missing some C++11 support because of the bug I fixed in
<https://gcc.gnu.org/ml/gcc-patches/2015-10/msg01040.html> and so
tests-unsupported is nonempty and the tests in question fail to
compile. (When I originally observed the bug, it was with a native
build / test simply using an x86_64 compiler that had been configured
as a cross compiler to isolate it from the system headers / libraries,
so the configuration issue applied to the compiler but run-built-tests
was yes, so I don't observe the issue with tests-unsupported with that
compiler.)
* Rules [$(run-built-tests) = no] (tests): Do not depend on
$(tests-unsupported).
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This patch adds the missing Linux sparc definitions from d060cd0.
Both value are copied from default sparc value [1] and with this
fix now both sparc 32 and 64 bits builds on Linux.
* sysdeps/unix/sysv/linux/sparc/bits/wordsize.h
(__WORDSIZE_TIME64_COMPAT32): Define for both 32 and 64 bits.
[1] sysdeps/sparc/sparc{32,64}/bits/wordsize.h
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On alpha, sqrt (a C90 function) brings in references to fegetenv
(C99), resulting in linknamespace test failures:
[initial] __sqrt -> [libm.a(w_sqrt.o)] __ieee754_sqrt ->
[libm.a(e_sqrt.o)] __feholdexcept -> [libm.a(feholdexcpt.o)] fegetenv
This patch fixes this by making __feholdexcept call __fegetenv instead
of fegetenv.
Tested for Alpha (compilation only).
[BZ #20768]
* sysdeps/alpha/fpu/feholdexcpt.c (__feholdexcept): Call
__fegetenv instead of fegetenv.
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manual/libm-err-tab.pl hardcodes a list of names for particular
platforms (mapping from sysdeps directory name to friendly name for
the manual). This goes against the principle of keeping information
about individual platforms in their corresponding sysdeps directory,
and the list is also very out-of-date regarding supported platforms
and their corresponding sysdeps directories.
This patch fixes this by adding a libm-test-ulps-name file alongside
each libm-test-ulps file. The script then gets the friendly name from
that file, which is required to exist, so it no longer needs to allow
for the mapping being missing.
Tested for x86_64.
[BZ #14139]
* manual/libm-err-tab.pl (%pplatforms): Initialize to empty.
(find_files): Obtain platform name from libm-test-ulps-name and
store in %pplatforms.
(canonicalize_platform): Remove.
(print_platforms): Use $pplatforms directly.
(by_platforms): Do not allow for platforms missing from
%pplatforms.
* sysdeps/aarch64/libm-test-ulps-name: New file.
* sysdeps/alpha/fpu/libm-test-ulps-name: Likewise.
* sysdeps/arm/libm-test-ulps-name: Likewise.
* sysdeps/generic/libm-test-ulps-name: Likewise.
* sysdeps/hppa/fpu/libm-test-ulps-name: Likewise.
* sysdeps/i386/fpu/libm-test-ulps-name: Likewise.
* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps-name: Likewise.
* sysdeps/ia64/fpu/libm-test-ulps-name: Likewise.
* sysdeps/m68k/coldfire/fpu/libm-test-ulps-name: Likewise.
* sysdeps/m68k/m680x0/fpu/libm-test-ulps-name: Likewise.
* sysdeps/microblaze/libm-test-ulps-name: Likewise.
* sysdeps/mips/mips32/libm-test-ulps-name: Likewise.
* sysdeps/mips/mips64/libm-test-ulps-name: Likewise.
* sysdeps/nios2/libm-test-ulps-name: Likewise.
* sysdeps/powerpc/fpu/libm-test-ulps-name: Likewise.
* sysdeps/powerpc/nofpu/libm-test-ulps-name: Likewise.
* sysdeps/s390/fpu/libm-test-ulps-name: Likewise.
* sysdeps/sh/libm-test-ulps-name: Likewise.
* sysdeps/sparc/fpu/libm-test-ulps-name: Likewise.
* sysdeps/tile/libm-test-ulps-name: Likewise.
* sysdeps/x86_64/fpu/libm-test-ulps-name: Likewise.
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The check-installed-headers tests show up that the MIPS <sys/user.h>
is not self-contained, using size_t without including any header that
defines it. This patch fixes it by including <stddef.h>, as done for
other architectures' versions of this header.
Tested for MIPS (all 24 ABIs, compilation only).
* sysdeps/unix/sysv/linux/mips/sys/user.h: Include <stddef.h>.
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This patch marks the check-execstack test as expected to fail for
MIPS, with a comment referencing previous RFC discussion of the
changes that would be needed to support non-executable stacks on MIPS.
Tested for MIPS (all 24 ABIs).
* sysdeps/unix/sysv/linux/mips/Makefile [$(subdir) = elf]
(test-xfail-check-execstack): New variable.
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This patch adds a localplt.data file for MIPS, reflecting the
peculiarities of MIPS ELF that mean this test cannot detect PLT
entries (there aren't any in shared libraries), not GOT entries
(because of the implicit relocation).
Tested for MIPS (all 24 ABIs).
* sysdeps/mips/localplt.data: New file.
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* bits/wordsize.h: Add documentation.
* sysdeps/aarch64/bits/wordsize.h : New file
* sysdeps/generic/stdint.h (PTRDIFF_MIN, PTRDIFF_MAX): Update
definitions.
(SIZE_MAX): Change ifdef to if in __WORDSIZE32_SIZE_ULONG check.
* sysdeps/gnu/bits/utmp.h (__WORDSIZE_TIME64_COMPAT32): Check
with #if instead of #ifdef.
* sysdeps/gnu/bits/utmpx.h (__WORDSIZE_TIME64_COMPAT32): Ditto.
* sysdeps/mips/bits/wordsize.h (__WORDSIZE32_SIZE_ULONG,
__WORDSIZE32_PTRDIFF_LONG, __WORDSIZE_TIME64_COMPAT32):
Add or change defines.
* sysdeps/powerpc/powerpc32/bits/wordsize.h: Likewise.
* sysdeps/powerpc/powerpc64/bits/wordsize.h: Likewise.
* sysdeps/s390/s390-32/bits/wordsize.h: Likewise.
* sysdeps/s390/s390-64/bits/wordsize.h: Likewise.
* sysdeps/sparc/sparc32/bits/wordsize.h: Likewise.
* sysdeps/sparc/sparc64/bits/wordsize.h: Likewise.
* sysdeps/tile/tilegx/bits/wordsize.h: Likewise.
* sysdeps/tile/tilepro/bits/wordsize.h: Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/wordsize.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/wordsize.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/wordsize.h: Likewise.
* sysdeps/wordsize-32/bits/wordsize.h: Likewise.
* sysdeps/wordsize-64/bits/wordsize.h: Likewise.
* sysdeps/x86/bits/wordsize.h: Likewise.
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strchr and is significantly faster than the C version.
2016-11-04 Wilco Dijkstra <wdijkstr@arm.com>
Kevin Petit <kevin.petit@arm.com>
* sysdeps/aarch64/memchr.S (__memchr): New file.
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This patch makes sysdeps/tile/preconfigure handle tilegx* machine
names instead of just plain tilegx. That matches GCC, and in
particular allows a big-endian toolchain to use the tilegxbe-linux-gnu
name when configuring both GCC and glibc.
Tested with compilation for tilegxbe-linux-gnu, both 32-bit and 64-bit
(building a subsequent GCC against that glibc still falls over because
of both 32-bit and 64-bit libraries going in the lib directory, as
noted at
<https://sourceware.org/ml/libc-alpha/2016-11/msg00129.html>).
* sysdeps/tile/preconfigure: Accept tilegx* instead of tilegx.
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Having found that with my script to build many glibc variants I could
reproduce the linknamespace test failures in parallel builds (that
various people had previously reported but I hadn't seen myself), I
investigated those failures further. This patch adds a missing
dependency to those tests.
Tested for x86_64, including the configuration where I saw those
failures and where I don't see them with this patch.
* conform/Makefile ($(linknamespace-header-tests)): Also depend on
$(linknamespace-symlists-tests).
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* time/tst-strptime2.c: Ignore -Wformat-length warning.
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The changes to fix bug 20729 introduced an error which removed an
ignore diagnostic from -O2 by using the new -Os related macro.
This broke ppc64 builds. This commit fixes the mistake.
Tested on x86, x86_64, ppc64, ppc64le, arm, aarch64, and s390x.
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* stdio-common/tst-printf.c: Ignore -Wformat-length warning.
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Bug 19673 reports that the documentation of clog10 is incorrect, both
failing to include the division by log (10) in the imaginary part and,
in the non-TeX version of the equation only, describing the LHS as log
rather than log10.
This patch fixes both issues. Note: I think it's appropriate that the
LHS says log10 not clog10, and that the cexp and clog descriptions
referred to in a comment in that bug report similarly say exp and log;
this is a mathematical description not a literal C one.
Tested for x86_64.
[BZ #19673]
* manual/math.texi (Exponents and Logarithms): Correct description
of clog10.
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The original fix for bug 20729 failed to include
libc-internal.h in the files that needed them and
this caused build failures on machines that don't
implicitly include this header. This commit fixes
that by following the consensus rule that a header,
if needed, should always be directly included.
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* sysdeps/mach/hurd/dl-sysdep.c (__mmap): Do not deallocate memobj_wr
when it is MACH_PORT_NULL.
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This commit adds a new DIAG_IGNORE_Os_NEEDS_COMMENT which is only
enabled when compiling with -Os. This allows developers working on
-Os enabled builds to mark false-positive warnings without impacting the
warnings emitted at -O2.
Then using the new DIAG_IGNORE_Os_NEEDS_COMMENT we fix 6 warnings
generated with GCC 5 to get -Os builds working again.
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To support tests that include crypt.h we add a wrapper.
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The test case dlfcn/bug-atexit3-lib.cc calls write and doesn't check the
result. When building with GCC 6.2, this generates a warning in 'make
check', which is treated as an error. This patch replaces the call to
write with a call to write_message.
Tested for powerpc64le.
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TS 18661-1 defines SNAN macros for signaling NaN values, suitable for
use in static initializers. This patch adds them to glibc's <math.h>
(provided you are building with GCC 3.3 or later; no attempt is made
to provide any kind of nonconforming fallback for older compilers
without the __builtin_nans functions).
Tested for x86_64 and x86.
* math/math.h
[__GLIBC_USE (IEC_60559_BFP_EXT) && __GNUC_PREREQ (3, 3)] (SNANF):
New macro.
[__GLIBC_USE (IEC_60559_BFP_EXT) && __GNUC_PREREQ (3, 3)] (SNAN):
Likewise.
[__GLIBC_USE (IEC_60559_BFP_EXT) && __GNUC_PREREQ (3, 3)] (SNANL):
Likewise.
* manual/arith.texi (Infinity and NaN): Document SNANF, SNAN and
SNANL.
* math/test-double.h (snan_value_MACRO): New macro.
* math/test-float.h (snan_value_MACRO): Likewise.
* math/test-ldouble.h (snan_value_MACRO): Likewise.
* math/libm-test.inc (issignaling_test_data): Add tests of
snan_value_MACRO.
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Explain that pthread_rwlock_unlock may crash if called on a lock not
held by the current thread.
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Use a function call to _exit() so that the linker can create a TOC stub
instead of just a branch.
Tested on powerpc64.
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These functions are externally visible with a static libcrypt
library.
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The crypt/ directory is not added as part of the sysdep directories.
Add it when building tst-linkall-static to include crypt.h.
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The test math/test-nan-overflow uses malloc without including
stdlib.h. On -Os builds for i486 the header inclusion order
is altered enough that the test fails to build because of the
warning which is turned into an error.
The obvious fix is to include stdlib.h since malloc is being
used directly.
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Calling an IFUNC function defined in unrelocated shared library may
lead to segfault. This patch issues an error message to request
relinking the shared library if it references IFUNC function defined
in the unrelocated shared library.
[BZ #20019]
* sysdeps/i386/dl-machine.h (elf_machine_rel): Check IFUNC
definition in unrelocated shared library.
* sysdeps/x86_64/dl-machine.h (elf_machine_rela): Likewise.
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With different encodings of the header, the previous zero initialization
may be insufficient and produce an invalid encoding.
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This change allows us to change the encoding of these struct members
in a centralized fashion.
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The strtod function should raise the "inexact" exception when its
result is inexact, but fails to do so except in the case of underflow
or overflow. This patch fixes it to do so for all inexact results.
tst-strtod-round is extended to test for this exception; the generator
is fixed to properly mark inexact results as such in the case where
the inexactness is from the mpfr_subnormalize step.
Tested for x86_64, x86 and powerpc.
[BZ #19380]
* stdlib/strtod_l.c (round_and_return): Force "inexact" exception
for inexact results.
* stdlib/gen-tst-strtod-round.c (string_to_fp): Return indication
of inexact result where mpfr_subnormalize is the only inexact
step.
* stdlib/tst-strtod-round-data.h: Regenerated.
* stdlib/tst-strtod-round-skeleton.c [!FE_INEXACT] (FE_INEXACT):
Define to 0.
(GEN_ONE_TEST): Test inexact exceptions raised are as expected.
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* sysdeps/unix/sysv/linux/sparc/sys/user.h: Include stddef.h
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