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Reported by Moonlightning on #rust
> 17:13 EDT < Moonlightning> I think I found a bug in the str::matches() documentation. Was it copied from str::split()? :p
> 17:13 EDT < Moonlightning> Because it says “The pattern can be a simple `&str`, `char`, or a closure that determines the split.”
I changed "determines the split" to "determines if a character matches".
It's not super clear, "determines the split" is not super clear to begin with, maybe this can be made better? On the other hand following the link to Pattern provides enough details.
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separate use code between openbsd/netbsd
netbsd use c_int and c_uint, but openbsd not, resulting a unused_import
error.
r? @alexcrichton
problem introduced by #28543
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Fix #22599.
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extend the search path of libraries to /usr/local/lib in `run-make`
testsuite. It should permit to find libstdc++.so on usual directory.
r? @alexcrichton
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separate use code between openbsd/netbsd.
netbsd use c_int and c_uint, but openbsd not, resulting a unused_import
error.
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This is part of some cleanup I did while investigating #28129.
This also ensures that `on_panic` is run even if the user has registered too many callbacks.
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walk_expr includes call to visit_expr for subexpressions.
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Move out the `TypeLimits` and `ImproperCTypes` lints into a separate module.
Part of #22206
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Part of https://github.com/rust-lang/rust/issues/6993
This patch replaces `Ident`s with `Name`s in data structures of HIR and updates the dependent crates to compile and pass `make check`.
Some HIR structures still use `Ident`s, namely `PathSegment`, `PatIdent`, `ExprWhile`, `ExprLoop`, `ExprBreak` and `ExprAgain`, they need them for resolve (but `PathSegment` is special, see https://github.com/rust-lang/rust/issues/6993#issuecomment-141256292).
r? @nrc
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Fixes #16264 / #18241.
As far as I can tell, it should be impossible for a trait to be inaccessible if it's in scope, so this check is unnecessary. Are there any cases where this check is actually needed?
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Fixes #28279.
Currently
`common_supertype(*mut for<'a> Fn(&'a usize), *mut for<'a> Fn(&'a usize) + 'static)`
equals `*mut Fn(&usize)` which seems to be caused by `higher_ranked_sub()` allowing region variables to escape the comparison. This prevents inference from working properly with stuff like `Rc<Fn(&T)>`.
r? @nikomatsakis
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These changes introduce the ability to cross-compile working binaries for NetBSD/amd64. Previous support added in PR #26682 shared all its code with the OpenBSD implementation, and was therefore never functional (e.g. linking against non-existing symbols and using wrong type definitions). Nonetheless, the previous patches were a great starting point and made my work significantly easier. :smiley:
Because there are no stage0 snapshots for NetBSD (yet), I used a cross-compiler for NetBSD 7.0 RC3 and only tested some toy programs (threading and channels, stack guards, a small TCP/IP echo server and some other platform dependent bits). If someone could point me to documentation on how to generate a stage0 snapshot from a cross-compiler I'm happy to run the full test suite.
A few other notes regarding Rust on NetBSD/amd64:
- To preserve binary compatibility, NetBSD introduces new symbols for system call wrappers on breaking ABI changes and keeps the old (legacy) symbols around, see [this documentation](https://www.netbsd.org/docs/internals/en/chap-processes.html#syscalls_master) for some details. I went ahead and modified the `libc` and `std` crate to use the current (renamed) symbols instead of the legacy ones where I found them, but I might have missed some. Notably using the `sigaction` symbol (deprecated in 1998) instead of `__sigaction14` even triggers SIGSYS (bad syscall) on my amd64 setup. I also changed the type definitions to use the most recent version.
- NetBSD's gdb doesn't really support position independent executables, so you might want to turn that off for debugging, see [NetBSD Problem Report #48250](https://gnats.netbsd.org/48250).
- For binaries invoked using a relative path, NetBSD supports `$ORIGIN` only for short `rpath`s (~64 chars or so, I'm told). If running an executable fails with `execname not specified in AUX vector: No such file or directory`, consider invoking the binary using its full absolute path.
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The `register` function is unstable and it is not used anymore, hence
it can be removed (together with the now-unused `Callback` type and
`static` variables).
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PathSegment, PatIdent, ExprWhile, ExprLoop, ExprBreak and ExprAgain - they need Idents for resolve
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extend the search path of libraries to /usr/local/lib in `run-make`
testsuite. It should permit to find libstdc++.so on usual directory.
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This simplifies a little inner_try and avoids multiple accesses to TLS.
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Fixed typo in example code.
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This patch basically adds a target option for omitting the `-nodefaultlibs` flag when invoking the linker. I am not sure if this is the correct or only way to approach this problem, so any feedback is welcome.
Motivation: I'm currently working on a Rust target specification for the [rumprun](/rumpkernel/rumprun) unikernel. rumprun is based on rump kernels and uses NetBSDs libc and drivers to provide a POSIXy environment. It provides its own linker wrapper that generates binaries which can be "baked" into a unikernel after configuration. Using `-nodefaultlibs` on the rumprun linker will prevent it from selecting the search paths for the rumprun libraries. My current target implementation for rumprun is here: gandro/rust@295744b2ee2378f41a20d4b498b8f1991a75e93c
Currently, only a target that `is_like_windows` will omit the `-nodefaultlibs` flag, but since rumprun is not like Windows otherwise, I think a separate flag makes more sense. This might be a breaking change for target specifications that have the `is_like_windows` option set to true. Such targets need to set `no_default_libraries` to false in order to restore the old behavior.
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Resolve the TLS PANICKING variable just once and re-use it as needed.
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The registration of `panicking::on_panic` as a general-purpose
callback is overcomplicated and can fail.
Instead, invoking it explicitly removes the need for locking and paves
the way for further improvements.
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Closes #28251.
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This is so LLVM isn't forced to load every byte of it. Also sets the alignment of
the load. Adds a test for the debug script section.
r? @alexcrichton
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Closes https://github.com/rust-lang/rust/issues/28075
Closes https://github.com/rust-lang/rust/issues/28388
r? @eddyb
cc @brson
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Part of #22206
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If set to false, `-nodefaultlibs` is not passed to the linker. This
was the default behavior on Windows, but it should be configurable
per target.
This is a [breaking-change] for target specifications that have
the `is_like_windows` option set to true. Such targets need to
set `no_default_libraries` to false in order to restore the old
behavior.
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This is useful for debugging LTO issues, #28066 for example.
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This is so LLVM isn't forced to load every byte of it. Also sets the alignment of
the load. Adds a test for the debug script section.
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Since 1.3.0 the BufWriter has seen tremendous speedups. So when I use it in the shootout benchmarks, I see some nice speedup (which up to 1.2.0 was nixed by the pessimizations during initialization).
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With -O2, LLVM's inliner can remove this code, but this does not happen
with -O1 and lower. As a result, dropping Vec<u8> was linear with length,
resulting in abysmal performance for large buffers.
See issue #24280.
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Closes #28561.
r? @Manishearth
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Closes #28561.
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