From: Sören Tempel
This patch is similar to the existing check for librt. If libucontext
is installed and libucontext.a provides the aforementioned symbols, then
it is added to $LIBS. If not, no error is emitted. We could,
alternatively, also check libc.a for these symbols and thus prefer libc
ov
From: Sören Tempel
On glibc, there are two versions of strerror_r: An XSI-compliant and a
GNU-specific version. The latter is only available on glibc. In order
to avoid duplicating the post-processing code of error messages, this
commit provides a separate strerror_go symbol which always refers t
From: Sören Tempel
On glibc, there are two versions of strerror_r: An XSI-compliant and a
GNU-specific version. The latter is only available on glibc. In order
to avoid duplicating the post-processing code of error messages, this
commit provides a separate strerror_go symbol which always refers t
From: Sören Tempel
On glibc-based systems, off_t is a 32-bit type on 32-bit systems and a
64-bit type on 64-bit systems by default. However, on systems using musl
libc off_t is unconditionally a 64-bit type. As such, it is insufficient
to use a uintptr type for the mmap offset parameter.
Present
From: Sören Tempel
Tested on x86_64 Arch Linux (glibc) and Alpine Linux (musl libc).
Previously, libgo relied on the _sigev_un implementation-specific
field in struct sigevent, which is only available on glibc. This
patch uses the sigev_notify_thread_id macro instead which is mandated
by timer_c
From: Sören Tempel
On 32-bit systems, musl only defines SYS_timer_settime32 not
SYS_timer_settime. This causes the following compilation error:
os_linux.go:251:30: error: reference to undefined name
'_SYS_timer_settime'
251 | return int32(syscall(_SYS_timer_set
From: Sören Tempel
The `(( expression ))` syntax is a Bash extension and not supported by
POSIX shell [1]. However, the arithmetic expressions used by the
gobuild() function can also be expressed using arithmetic POSIX
expansions with `$(( expression ))` [2].
Contrary to the Bash extension, arit
From: Sören Tempel
This patch addresses two minor compatibility issues with musl libc:
* On some architecture (e.g. PowerPC), musl has more than one field
prefixed with st_{a,m,c}tim in struct stat. This causes the sed(1)
invocation to not work correctly (since it will only replace the first
From: Sören Tempel
The libgo code assumes both off64_t and loff_t to be present. For
example, for the splice(2) function prototype. Similar to glibc,
musl libc supports these types but defines them as macros, not as
typedefs. Unfortunately, -fdump-go-spec only recognizes types defined
using typed
From: Sören Tempel
The .regs member is primarily intended to be used in conjunction with
ptrace. Since this code is not using ptrace, using .regs is a bad idea.
Furthermore, the code currently fails to compile on musl since the
pt_regs type (used by .regs) is in an incomplete type which has to be
From: Sören Tempel
The .regs member is primarily intended to be used in conjunction with
ptrace. Since this code is not using ptrace, using .regs is a bad idea.
Furthermore, the code currently fails to compile on musl since the
pt_regs type (used by .regs) is in an incomplete type which has to be
From: Sören Tempel
The .regs member is primarily intended to be used in conjunction with
ptrace. Since this code is not using ptrace, using .regs is a bad idea.
Furthermore, the code currently fails to compile on musl since the
pt_regs type (used by .regs) is in an incomplete type which has to be
From: Sören Tempel
Since commit c163647ffbc9a20c8feb6e079dbecccfe016c82e -fsplit-stack
is only supported on glibc targets. However, this original commit
required some fixups. As part of the fixup, the changes to the
gnu-user-common.h and gnu.h were partially reverted in commit
60953a23d57b13a672f
From: Sören Tempel
Since commit c163647ffbc9a20c8feb6e079dbecccfe016c82e -fsplit-stack
is only supported on glibc targets. However, this original commit
required some fixups. As part of the fixup, the changes to the
gnu-user-common.h and gnu.h where partially reverted in commit
60953a23d57b13a672
From: Sören Tempel
The -fsplit-stack option requires the pthread_t TCB definition in the
libc to provide certain struct fields at specific hardcoded offsets. As
far as I know, only glibc provides these fields at the required offsets.
Most notably, musl libc does not have these fields. However, si
From: Sören Tempel
Both glibc and musl libc declare pt_regs as an incomplete type. This
type has to be completed by inclusion of another header. On Linux, the
asm/ptrace.h header file provides this type definition. Without
including this header file, it is not possible to access the regs member
o
From: Sören Tempel
The -fsplit-stack option requires the pthread_t TCB definition in the
libc to provide certain struct fields at specific hardcoded offsets. As
far as I know, only glibc provides these fields at the required offsets.
Most notably, musl libc does not have these fields. However, si
From: Sören Tempel
The -fsplit-stack option requires the pthread_t TCB definition in the
libc to provide certain struct fields at specific hardcoded offsets. As
far as I know, only glibc provides these fields at the required offsets.
Most notably, musl libc does not have these fields. However, si
From: Sören Tempel
The stddef.h header checks/sets various hardcoded toolchain/os specific
macro guards to prevent redefining types such as ptrdiff_t, wchar_t, or
size_t. However, without this patch, the file does not check/set the
typedef macro guards for musl libc. This causes types such as siz
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