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Fix BTreeSet and BTreeMap gdb pretty-printers
The BTreeSet and BTreeMap gdb pretty-printers did not take the node
structure into account, and consequently only worked for shallow sets.
This fixes the problem by iterating over child nodes when needed.
This patch avoids the current approach of implementing some of the
value manipulations in debugger-indepdendent code. This was done for
convenience: a type lookup was needed for the first time, and there
currently are no lldb formatters for these types.
Closes #55771
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Disable some pretty-printers when gdb is rust-enabled
A rust-enabled gdb already knows how to display string slices,
structs, tuples, and enums (and after #54004, the pretty-printers
can't handle enums at all). This patch disables these pretty-printers
when gdb is rust-enabled.
The "gdb-pretty-struct-and-enums-pre-gdb-7-7.rs" test is renamed,
because it does not seem to depend on any behavior of that version of
gdb, and because gdb 7.7 is 4 years old now.
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Fix VecDeque pretty-printer
This fixes the VecDeque pretty-printer to handle cases where
head < tail.
Closes #55944
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The BTreeSet and BTreeMap gdb pretty-printers did not take the node
structure into account, and consequently only worked for shallow sets.
This fixes the problem by iterating over child nodes when needed.
This patch avoids the current approach of implementing some of the
value manipulations in debugger-indepdendent code. This was done for
convenience: a type lookup was needed for the first time, and there
currently are no lldb formatters for these types.
Closes #55771
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A rust-enabled gdb already knows how to display string slices,
structs, tuples, and enums (and after #54004, the pretty-printers
can't handle enums at all). This patch disables these pretty-printers
when gdb is rust-enabled.
The "gdb-pretty-struct-and-enums-pre-gdb-7-7.rs" test is renamed,
because it does not seem to depend on any behavior of that version of
gdb, and because gdb 7.7 is 4 years old now.
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This fixes the VecDeque pretty-printer to handle cases where
head < tail.
Closes #55944
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Remove unused re import in gdb_rust_pretty_printing
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Fix invalid path in generate-deriving-span-tests.py.
This script broke after #53196 – the tests were moved.
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This script broke after #53196 after the tests were moved.
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Fix spelling in the documentation to htmldocck.py
I was reading through htmldocck.py, and decided to attempt to clean it up a little bit. Let me know if you disagree with my edits.
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This reverts commit c6e3d7fa3113aaa64602507f39d4627c427742ff, reversing
changes made to 4591a245c7eec9f70d668982b1383cd2a6854af5.
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We're shipping a rust-enabled lldb, but the "lldb" executable is not
installed into the "bin" directory by rustup. See the discussion in
https://github.com/rust-lang-nursery/rustup.rs/pull/1492 for
background on this decision. There, we agreed to have rust-lldb
prefer the rust-enabled lldb if it is installed.
This patch changes dist.rs to put lldb into rustlib, following what
was done for the other LLVM tools in #53955, and then fixes rust-lldb
to prefer that lldb, if it exists.
See issue #48168
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This script invokes the gdbgui graphical GDB front-end
with the Rust pretty printers loaded. The script does not install
gdbgui, that must be done manually.
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This way the process we get by calling rust-{gdb,lldb} is an actual
{gdb,lldb} instance and not (perhaps surprisingly) a script waiting for
the debugger process to finish. Thus, sending a SIGINT to the spawned
process stops execution of the child, for example.
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Arguments are passed on the command line via --one-line-before-file
(instead of in a file via --source-before-file) to lldb.
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pretty print BTreeSet
I want pretty printing for BTreeSet.
```rust
use std::collections::*;
fn main() {
let mut s = BTreeSet::new();
s.insert(5);
s.insert(3);
s.insert(7);
s.remove(&3);
println!("{:?}", s);
}
```
```
(gdb) b 9
(gdb) p s
$1 = BTreeSet<i32> with 2 elements = {[0] = 5, [1] = 7}
```
This is analogy of pretty printing for C++ std::set.
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They are all needed now due to the stdsimd update.
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Use --directory= instead of -d, because cgdb reuses the short option.
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Previously, two comparison operations would be generated for each field, each of which could delegate to another derived PartialOrd. Now we use ordering and optional chaining to ensure each pair of fields is only compared once.
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Fix derive(PartialOrd) and optimise final field operation
```rust
// Before (`lt` on 2-field struct)
self.f1 < other.f1 || (!(other.f1 < self.f1) &&
(self.f2 < other.f2 || (!(other.f2 < self.f2) &&
(false)
))
)
// After
self.f1 < other.f1 || (!(other.f1 < self.f1) &&
self.f2 < other.f2
)
// Before (`le` on 2-field struct)
self.f1 < other.f1 || (!(other.f1 < self.f1) &&
(self.f2 < other.f2 || (!(other.f2 < self.f2) &&
(true)
))
)
// After
self.f1 < other.f1 || (self.f1 == other.f1 &&
self.f2 <= other.f2
)
```
(The big diff is mainly because of a past faulty rustfmt application that I corrected 😒)
Fixes #49650 and fixes #49505.
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r=nikomatsakis
Ignore copyright year when generating deriving span tests
Previously, generate-deriving-span-tests.py would regenerate all the tests anew, even if they hadn't changed. This creates unnecessary diffs that only change the copyright year. Now we check to see if any of the content of the test has changed before generating the new one.
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These now spit out errors for `<=` and `>=` as well.
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Previously, generate-deriving-span-tests.py would regenerate all the tests anew, even if they hadn't changed. This creates unnecessary diffs that only change the copyright year. Now we check to see if any of the content of the test has changed before generating the new one.
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It is mostly for BSD system. Some tests (run-make/issue-35164 and
run-make/cat-and-grep-sanity-check) are failing with BSD
fgrep, whereas they pass with gnu version (gfgrep).
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This Python script was used to generate a `ziggurat_tables.rs` file in
librand, but librand was moved out of the repo.
* https://github.com/rust-lang/rust/commits/master/src/librand/distributions/ziggurat_tables.rs
* https://github.com/rust-lang-nursery/rand/blob/master/utils/ziggurat_tables.py
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This Python script converts documentation comments from the
`#[doc = "..."]` attribute to the `///` syntax. It was added six
years ago, presumably to help with the transition when `///` was
implemented and hasn't really been touched since. I don't think there's
much value in keeping it around at this point.
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This commit imports the LLD project from LLVM to serve as the default linker for
the `wasm32-unknown-unknown` target. The `binaryen` submoule is consequently
removed along with "binaryen linker" support in rustc.
Moving to LLD brings with it a number of benefits for wasm code:
* LLD is itself an actual linker, so there's no need to compile all wasm code
with LTO any more. As a result builds should be *much* speedier as LTO is no
longer forcibly enabled for all builds of the wasm target.
* LLD is quickly becoming an "official solution" for linking wasm code together.
This, I believe at least, is intended to be the main supported linker for
native code and wasm moving forward. Picking up support early on should help
ensure that we can help LLD identify bugs and otherwise prove that it works
great for all our use cases!
* Improvements to the wasm toolchain are currently primarily focused around LLVM
and LLD (from what I can tell at least), so it's in general much better to be
on this bandwagon for bugfixes and new features.
* Historical "hacks" like `wasm-gc` will soon no longer be necessary, LLD
will [natively implement][gc] `--gc-sections` (better than `wasm-gc`!) which
means a postprocessor is no longer needed to show off Rust's "small wasm
binary size".
LLD is added in a pretty standard way to rustc right now. A new rustbuild target
was defined for building LLD, and this is executed when a compiler's sysroot is
being assembled. LLD is compiled against the LLVM that we've got in tree, which
means we're currently on the `release_60` branch, but this may get upgraded in
the near future!
LLD is placed into rustc's sysroot in a `bin` directory. This is similar to
where `gcc.exe` can be found on Windows. This directory is automatically added
to `PATH` whenever rustc executes the linker, allowing us to define a `WasmLd`
linker which implements the interface that `wasm-ld`, LLD's frontend, expects.
Like Emscripten the LLD target is currently only enabled for Tier 1 platforms,
notably OSX/Windows/Linux, and will need to be installed manually for compiling
to wasm on other platforms. LLD is by default turned off in rustbuild, and
requires a `config.toml` option to be enabled to turn it on.
Finally the unstable `#![wasm_import_memory]` attribute was also removed as LLD
has a native option for controlling this.
[gc]: https://reviews.llvm.org/D42511
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