Attempt to always provide _Thread_local in <sys/reent.h> by including
<sys/cdefs.h>. The C specific keyword _Thread_local is not available
unless targetting a suitable C version.
Conditionally provide default __getreent() implementation only if
_REENT_THREAD_LOCAL is not defined. If struct _reent is replaced by
dedicated thread-local objects neither the structure nor _impure_ptr is
available.
Use _REENT_ERRNO() macro to access errno. This encapsulation is
required, as errno might be either _errno member of struct _reent,
_tls_errno or any such implementation detail.
Nano malloc uses `size' in assertation whereas the correct variable would be
`s'. Given this has existed ever since nano malloc support was added, based
on the context ("returned payload area of desired size does not exceed the
actual allocated chunk") I presume that indeed `s' (user input) and not
`r->size' (computed) shall be used.
C23 requires that the unicode functions c16rtomb, c8rtomb, mbrtoc16,
mbrtoc32 and mbrtoc8 use their own internal state object. c32rtomb
only needs an internal state if the lib supports encoding with
shift states, but that's the case for newlib and Cygwin.
Only Cygwin implements these functions so add the states
objects only for Cygwin for now.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
SEEK_DATA and SEEK_HOLE are GNU nonstandard extensions also present
in Solaris, FreeBSD, and DragonFly BSD; they are proposed for inclusion
in the next POSIX revision (Issue 8).
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Example test case that fails with undefined reference to getentropy:
Testing g++.robertl/eb77.C, -std=c++20
doing compile
Executing on host: /build/gcc-13-2709-g9ac9fde961f/bin/arm-none-eabi-g++ /build/src/gcc/gcc/testsuite/g++.old-deja/g++.robertl/eb77.C -mthumb -march=armv6s-m -mcpu=cortex-m0 -mfloat-abi=soft -fdiagnostics-plain-output -fmessage-length=0 -std=c++20 -pedantic-errors -Wno-long-long -Wl,--start-group -lc -lm -Wl,--end-group --specs=nosys.specs -Wl,--allow-multiple-definition -Wl,-u,_isatty,-u,_fstat -Wl,-wrap,exit -Wl,-wrap,_exit -Wl,-wrap,main -Wl,-wrap,abort -Wl,g++_tg.o -lm -o ./eb77.exe (timeout = 800)
spawn -ignore SIGHUP /build/gcc-13-2709-g9ac9fde961f/bin/arm-none-eabi-g++ /build/src/gcc/gcc/testsuite/g++.old-deja/g++.robertl/eb77.C -mthumb -march=armv6s-m -mcpu=cortex-m0 -mfloat-abi=soft -fdiagnostics-plain-output -fmessage-length=0 -std=c++20 -pedantic-errors -Wno-long-long -Wl,--start-group -lc -lm -Wl,--end-group --specs=nosys.specs -Wl,--allow-multiple-definition -Wl,-u,_isatty,-u,_fstat -Wl,-wrap,exit -Wl,-wrap,_exit -Wl,-wrap,main -Wl,-wrap,abort -Wl,g++_tg.o -lm -o ./eb77.exe
pid is 28414 -28414
/build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/bin/ld: /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/lib/thumb/v6-m/nofp/libstdc++.a(random.o): in function `std::(anonymous namespace)::__libc_getentropy(void*)':
(.text._ZNSt12_GLOBAL__N_117__libc_getentropyEPv+0x8): undefined reference to `getentropy'
/build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/bin/ld: /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/lib/thumb/v6-m/nofp/libstdc++.a(random.o): in function `std::random_device::_M_init(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
(.text._ZNSt13random_device7_M_initERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x58): undefined reference to `getentropy'
/build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/bin/ld: /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/lib/thumb/v6-m/nofp/libc.a(libc_a-arc4random.o): in function `_rs_stir':
(.text._rs_stir+0x8): undefined reference to `getentropy'
collect2: error: ld returned 1 exit status
pid is -1
close result is 28414 exp6 0 1
output is /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/bin/ld: /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/lib/thumb/v6-m/nofp/libstdc++.a(random.o): in function `std::(anonymous namespace)::__libc_getentropy(void*)':
(.text._ZNSt12_GLOBAL__N_117__libc_getentropyEPv+0x8): undefined reference to `getentropy'
/build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/bin/ld: /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/lib/thumb/v6-m/nofp/libstdc++.a(random.o): in function `std::random_device::_M_init(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
(.text._ZNSt13random_device7_M_initERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x58): undefined reference to `getentropy'
/build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/bin/ld: /build/gcc-13-2709-g9ac9fde961f/bin/../lib/gcc/arm-none-eabi/13.0.0/../../../../arm-none-eabi/lib/thumb/v6-m/nofp/libc.a(libc_a-arc4random.o): in function `_rs_stir':
(.text._rs_stir+0x8): undefined reference to `getentropy'
collect2: error: ld returned 1 exit status
status 1
compiler exited with status 1
FAIL: g++.old-deja/g++.robertl/eb77.C -std=c++20 (test for excess errors)
Excess errors:
(.text._ZNSt12_GLOBAL__N_117__libc_getentropyEPv+0x8): undefined reference to `getentropy'
(.text._ZNSt13random_device7_M_initERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE+0x58): undefined reference to `getentropy'
(.text._rs_stir+0x8): undefined reference to `getentropy'
UNRESOLVED: g++.old-deja/g++.robertl/eb77.C -std=c++20 compilation failed to produce executable
Contributed by STMicroelectronics
Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
C99 allows to define arrays as non-overlappiung using the restrict
keyword. This is supported by GCC 3.1 and later, but it's not
allowed in C++.
This is in preparation of fixing a Cygwin build problem introduce by
commit 3c75fac130.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Newlib shares large parts of <sys/cdefs.h> with FreeBSD and received
this bug report:
https://sourceware.org/pipermail/newlib/2023/020400.html
As an extension, GCC and clang offer C99-style restricted pointers in
C++ mode:
https://gcc.gnu.org/onlinedocs/gcc/Restricted-Pointers.html
We notice that this extension is broken when including newlib headers:
restricted pointers are treated as ordinary pointers.
We traced this to the following section of
newlib/libc/include/sys/cdefs.h:
/*
* GCC 2.95 provides `__restrict' as an extension to C90 to support the
* C99-specific `restrict' type qualifier. We happen to use `__restrict' as
* a way to define the `restrict' type qualifier without disturbing older
* software that is unaware of C99 keywords.
*/
#if !(__GNUC__ == 2 && __GNUC_MINOR__ == 95)
#if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901
#define __restrict
#else
#define __restrict restrict
#endif
#endif
While the GCC __restrict extension was indeed introduced in GCC 2.95, it
is not limited to this version; the extension is also not limited to
C90:
https://gcc.gnu.org/gcc-2.95/c++features.html
Rewrite the logic in the header so that __restrict is kept alone when
available.
PR: 272723
MFC after: 1 week
version of __generic()
This ensures that __generic() more closely matches _Generic() when
using the fallback version when _Generic() is not available (such as
GCC).
Co-authored by: jrtc27
Reviewed by: jrtc27
Differential Revision: https://reviews.freebsd.org/D38215
Add feature test for C2X code. Add matching definitions
_ISOC2X_SOURCE for requesting sources and __ISO_C_VISIBLE
to be used in headers.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
After the commit a4705d387f, printf() for floating-point values
causes a memory leak. The legacy _ldtoa_r() assumed the char pointer
returned will be free'ed by Bfree(). However, gdtoa-based _ldtoa_r()
returns the pointer returned by gdtoa() which should be free'ed by
freedtoa(). Due to this issue, the caller of _ldtoa_r() fails to free
the allocated char buffer. This is the cause of the said memory leak.
https://cygwin.com/pipermail/cygwin/2023-July/254054.html
This patch makes rv_alloc()/freedtoa() allocate/free the buffer in
a compatible way with legacy _ldtoa_r().
Fixes: a4705d387f ("ldtoa: Import gdtoa from OpenBSD.")
Reported-by: natan_b <natan_b@libero.it>
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
This reverts commit 2b77087a48.
For some reason lost in time, commit 2b77087a48 introduced
Cygwin-specific code treating single byte characters outside the
portable character set as illegal chars. However, Cygwin was
always alone with this over-correct behaviour and it leads to
stuff like gnulib replacing functions defined in Cygwin with
their own implementation just due to that.
Revert this change, sans the changes to ChangeLog.
Fixes: 2b77087a48 ("* libc/stdlib/mbtowc_r.c (__ascii_mbtowc): Disallow conversion of")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
soft-fp should round floating pointer numbers according to the current
rounding mode. However, in the current code of lrint() and llrint(),
there are if statements before the actual rounding computation
if(j0 < -1)
return 0;
Where j0 is the exponent of the floating point number.
It means any number having a exponent less than -1
(i.e. interval (-0.5, 0.5)) will be rounded to 0 regardeless of the
rounding mode.
The bug already fixed in glibc in 2006 by moving the check afterwards
the rounding computation, but still persists in newlib.
This patch fixed it in a similar way to glibc
Ref Commit in glibc: 6624dbc07b5a9fb316ed188ef01f65b8eea8b47c
The extended _NL_foo names were originally designed after their GLibc
counterparts. However, the OUTDIGIT macros were accidentally defined as
OUTDIGITS, plural. Fix them.
Fixes: d47d5b850b ("Extend locale support to maintain wide char values of native strings")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Zfinx/Zdinx are new extensions ratified in 2022, it similar to F/D extensions,
support hard float operation for single/double precision, but the difference
between Zfinx/Zdinx and F/D is Zfinx/Zdinx is operating under general purpose
registers rather than dedicated floating-point registers.
This patch improve the hard float support detection for RISC-V port, so
that Zfinx/Zdinx can have better/right performance.
Co-authored-by: Jesse Huang <jesse.huang@sifive.com>
Cygwin needs an internal flag to allow specifying an empty pathname
in utimesat (GLIBC extension). We define it in _default_fcntl.h to
make sure we never introduce a value collision accidentally.
While at it, define the values as 16 bit hex values.
Reviewed-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
For example, for GCC/GCN target (AMD GPUs), target libraries are built
individually per supported hardware ISA ('-march=[...]'). Testing such a
toolchain via, for example:
$ make RUNTESTFLAGS='--target_board=[...]/-march=gfx90a' check[...]
... does work fine for all 'check-gcc-[...]' as well as GCC-provided target
libraries, 'check-target-[...]'. Just for 'check-target-newlib', for the
example above, not the '-march=gfx90a' newlib libraries are linked in, but
instead always the default ones, which results in link FAILure. This is cured
simply by skipping use of 'newlib/testsuite/lib/flags.exp', so that the
standard search paths as determined by GCC, DejaGnu are used for newlib, too.
Disable at least m68010 and m68020. These processors certainly do not
like unaligned accesses.
Signed-off-by: Remy Bohmer <linux@bohmer.net>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Signed-off-by: Austin Morton <austinpmorton@gmail.com>
Signed-off-by: Chris Packham <judge.packham@gmail.com>
Rename s_nearbyint.c, s_fdim.c and s_scalbln.c to remove conflicts
Remove functions that are not needed from above files
Modify include paths
Add includes missing in cygwin build
Add missing types
Create Makefiles
Create header files to resolve dependencies between directories
Modify some instances of unsigned long to uint64_t for 32 bit platforms
Add HAVE_FPMATH_H
If the thread-local storage (TLS) support was enabled, the _REENT_EMERGENCY()
object had the wrong size. It must be a buffer of length _REENT_EMERGENCY_SIZE
and not just a single character.
FreeBSD and Musl implement posix_spawn_file_actions_addfchdir_np
so that it checks the incoming descriptor for being negative, and,
if so, return with EBADF. The POSIX proposal defining
posix_spawn_file_actions_addfchdir follows this behaviour, see
https://www.austingroupbugs.net/view.php?id=1208
Fixes: 7e03fc35f5 ("Add posix_spawn_file_actions_add{f}chdir_np")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
These are defined as _np functions and available in glibc, musl, macOS,
FreeBSD, Solaris ≥ 11.3
They are likely to be standardized without the _np suffix as a result of
Austin Group issue 1208. if so, both names will be kept as aliases.
Introduce HAVE_CHDIR and HAVE_FCHDIR to allow building on systems not
providing these calls.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
E.g. known errors:
x = 0x1.000002c5e2e99p+0, y = 0x1.c9eee35374af6p+31 had an error of 639
ULP and is now correctly rounded.
x = 0x1.fffffd2e3e669p-1, y = 0x1.344c9823eb66cp+32 had an error of 428
ULP and is now correctly rounded.
__loadlocale never sets errno, but newlocale is supposed to
return ENOENT if the locale isn't valid.
Fixes: aefd8b5b51 ("Implement newlocale, freelocale, duplocale, uselocale")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
If a CPU implements EL2 as its highest exception level then programs
using newlib may start in hypervisor mode. In that state it is not
trivial to switch into the various EL1 modes to configure the
individual exception stacks, so do not try.
The existing code checked if there was a chunk in free_list and
that the tail was not the next chunk.
The check if there is a chunk is not needed since it's already
known but the case of a single chunk in free_list needs to be
handled differently.
Commit 89eb4bce15 was pretty half-hearted, missing
the codepage character type tables and wctomb/mbtowc
mappings.
Fixes: 89eb4bce15 ("Cygwin: support KOI8-T codeset")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Alexey Lapshin
Pekka Seppänen
Corinna Vinschen
Torbjörn SVENSSON
Sebastian Huber
John Baldwin
Takashi Yano
Jesse Huang via Newlib
Jeff Johnston
Jordi Sanfeliu
Thomas Schwinge
Mingye Wang
Remy Bohmer
Jennifer Averett
Andoni Arregi
Tobias Burnus
Srinath Parvathaneni