The doc comments for this global said:
"Locked to avoid interleaving panic messages from multiple threads."
Huh? There's already a mutex for that, it's the stderr mutex. Lock that
one instead.
The surrogate code points U+D800 to U+DFFF are valid code points but are not Unicode scalar values. This commit makes the error message more accurately reflect what is actually allowed in `\u` escape sequences.
From https://www.unicode.org/versions/Unicode15.0.0/ch03.pdf:
> D71 High-surrogate code point: A Unicode code point in the range U+D800 to U+DBFF.
> D73 Low-surrogate code point: A Unicode code point in the range U+DC00 to U+DFFF.
>
> 3.9 Unicode Encoding Forms
> D76 Unicode scalar value: Any Unicode code point except high-surrogate and low-surrogate code points.
Related: #20270
A node may be freed during the execution of this loop, causing there to
be a parent reference to a nonexistent node. Without this assignment,
this would lead to the map entry containing stale data. By assigning
none, the child node with the bad parent pointer will be harmlessly
omitted from the tree.
Closes#20262
These instructions are not emitted by AstGen. They also would have no
effect even if they did appear in ZIR: the Sema handling for these
instructions creates a Decl which the name strategy is applied to, and
proceeds to never use it. This pointless CPU heater is now gone, saving
2 ZIR tags in the process.
`Elf*_Rela` relocations store their argument in `r_addend`, including for `R_*_RELATIVE` relocations. Unlike `Elf*_Rel` relocations, they are not applied as a delta to the destination virtual address. Instead, they are computed from `base_address + r_addend` directly.
We are posting two submission (zero copy send and receive) and then
reading two completions. There is no guarantee that those completions
will be in the order of submissions.
This test was expecting fist send completion then receive.
Fix is allowing them to come other way too.
Had constrained the `aarch64_be` target, but not `aarch64`. This
constraint is necessary because earlier versions of glibc do not support
the aarch64 architecture.
Also, skip unsupported test cases.
glibc_runtime_check.c is a simple test case that exercises glibc functions
that might smoke out linking problems with Zig's C compiler. The
build.zig compiles it against a variety of glibc versions.
Also document and test glibc v2.2.5 (from 2002) as the oldest working
glibc target for C binaries.
The fstat,lstat,stat,mknod stubs used to build older (before v2.33)
glibc versions depend on the weak_hidden_alias macro. It was removed
from the glibc libc-symbols header, so patch it back in for the older
builds.
The scope of libc_nonshared.a was greatly changed in glibc 2.33 and
2.34, but only the change from 2.34 was reflected so far. Glibc 2.33
finally switched to versioned symbols for stat functions, meaning that
libc_nonshared.a no longer contains them since 2.33. Relevant files were
therefore reverted to 2.32 versions and renamed accordingly.
This commit also removes errno.c, which was probably added to
libc_nonshared.a based on a wrong assumption that glibc/include/errno.h
requires glibc/csu/errno.c. In reality errno.h should refer to
__libc_errno (not to be confused with the public __errno_location),
which should be imported from libc.so. The inclusion of errno.c resulted
in wrong compile options as well; this commit fixes them as well.
These are tripping on 32-bit x86 but are intended to prevent glibc
itself from being built with a bad configuration. Zig is only using this
file to create libc_nonshared.a, so it's not relevant.
This is the only place in all of glibc that this macro is referenced.
What is it doing? Only preventing fstatat.c from knowing the type
definition of `__time64_t`, apparently.
Fixes compilation of fstatat.c on 32-bit x86.
I could have just included the file from upstream glibc, but it was too
silly so I just inlined it. This patch could be dropped in a future
glibc update if desired. If omitted it will cause easily solvable
C compilation failures building glibc nonshared.
- `fcntl` was renamed to `fcntl64` in glibc 2.28 (see #9485)
- `res_{,n}{search,query,querydomain}` became "their own" symbols since
glibc 2.34: they were prefixed with `__` before.
This PR makes it possible to use `fcntl` with glibc 2.27 or older and
the `res_*` functions with glibc 2.33 or older.
These patches will become redundant with universal-headers and can be
dropped. But we have to do with what we have now.
- `fcntl` was renamed to `fcntl64` in glibc 2.28 (see #9485)
- `res_{,n}{search,query,querydomain}` became "their own" symbols since
glibc 2.34: they were prefixed with `__` before.
This PR makes it possible to use `fcntl` with glibc 2.27 or older and
the `res_*` functions with glibc 2.33 or older.
These patches will become redundant with universal-headers and can be
dropped. But we have to do with what we have now.
This is a patch to glibc features.h which makes
_DYNAMIC_STACK_SIZE_SOURCE undefined unless the version is >= 2.34.
This feature was introduced with glibc 2.34 and without this patch, code
built against these headers but then run on an older glibc will end up
making a call to sysconf() that returns -1 for the value of SIGSTKSZ
and MINSIGSTKSZ.
The actual `zig objcopy` does not accept keeping multiple sections.
If you pass multiple `-j .section` arguments to `zig objcopy`, it will
only respect the last one passed.
Originally I changed `zig objcopy` to accept multiple sections
and then concatenate them instead of returning after outputting the
first section (see emitElf) but I realized concatenating probably doesn't make sense.
