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Found with `git grep -P '\b([a-z]+)\s+\1\b'`
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r=nikomatsakis
Less conservative uninhabitedness check
Extends the uninhabitedness check to structs, non-empty enums, tuples and arrays.
Pulled out of #47291 and #50262.
Fixes https://github.com/rust-lang/rust/issues/54586.
r? @nikomatsakis
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Disable btree pretty-printers on older gdbs
gdb versions before 8.1 have a bug that prevents the BTreeSet and
BTreeMap pretty-printers from working. This patch disables the test
on those versions, and also disables the pretty-printers there as
well.
Closes #56730
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gdb versions before 8.1 have a bug that prevents the BTreeSet and
BTreeMap pretty-printers from working. This patch disables the test
on those versions, and also disables the pretty-printers there as
well.
Closes #56730
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Test with gdb8.2 and add debuginfo printing function call test
As far as I can see, `print function()` is not tested. It is important feature for debugging.
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This changes debuginfo generation to add template parameters to
generic types. With this change the DWARF now has
DW_TAG_template_type_param for types, not just for functions, like:
<2><40d>: Abbrev Number: 6 (DW_TAG_structure_type)
<40e> DW_AT_name : (indirect string, offset: 0x375): Generic<i32>
<412> DW_AT_byte_size : 4
<413> DW_AT_alignment : 4
...
<3><41f>: Abbrev Number: 8 (DW_TAG_template_type_param)
<420> DW_AT_type : <0x42a>
<424> DW_AT_name : (indirect string, offset: 0xa65e): T
Closes #9224
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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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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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This updates lldb to pick up some bug fixes, and makes one minor test
suite fix to account for this.
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The enum debuginfo patch includes a legacy mode that is used when
building against LLVM 5 and LLVM 6. The main enum debuginfo tests
have been updated to rely on the new approach and a new-enough gdb.
This patch makes a copy of these tests so that the fallback mode will
continue to be tested.
Note that nil-enum.rs is not copied; it seemed not to provide enough
value to bother.
A new header directive is added, "ignore-llvm-version". I will send a
patch to update the rustc documentation once this lands.
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Bug #52452 notes some debuginfo test regressions when moving to gdb
8.1. This series will also cause versions of gdb before 8.2 to fail
when a recent LLVM is used -- DW_TAG_variant_part support was not
added until 8.2.
This patch updates one of the builders to a later version of Ubuntu,
which comes with gdb 8.2. It updates the relevant tests to require
both a new-enough LLVM and a new-enough gdb; the subsequent patch
arranges to continue testing the fallback mode.
The "gdbg" results are removed from these tests because the tests now
require a rust-enabled gdb.
If you read closely, you'll see that some of the lldb results in this
patch still look a bit strange. This will be addressed in a
subsequent patch; I believe the fix is to disable the Python
pretty-printers when lldb is rust-enabled.
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Currently lldb tests are run only on macOS, and gdb tests are only run
elsewhere. This patch changes this to run tests depending on what is
available.
One test is changed, as it was previously marked as failing on macOS,
whereas really it is a generic failure with lldb.
Closes #54721
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Run debuginfo tests against rust-enabled lldb, when possible
If the rust-enabled lldb was built, then use it when running the
debuginfo tests. Updating the lldb submodule was necessary as this
needed a way to differentiate the rust-enabled lldb, so I added a line
to the --version output.
This adds compiletest commands to differentiate between the
rust-enabled and non-rust-enabled lldb, as is already done for gdb. A
new "rust-lldb" header directive is also added, but not used in this
patch; I plan to use it in #54004.
This updates all the tests.
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If the rust-enabled lldb was built, then use it when running the
debuginfo tests. Updating the lldb submodule was necessary as this
needed a way to differentiate the rust-enabled lldb, so I added a line
to the --version output.
This adds compiletest commands to differentiate between the
rust-enabled and non-rust-enabled lldb, as is already done for gdb. A
new "rust-lldb" header directive is also added, but not used in this
patch; I plan to use it in #54004.
This updates all the tests.
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This reverts commit c6e3d7fa3113aaa64602507f39d4627c427742ff, reversing
changes made to 4591a245c7eec9f70d668982b1383cd2a6854af5.
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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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I should rather properly fix debuginfo but I have no clue how to do that.
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This upgrades the OSX builders to the `xcode9.3-moar` image which has 3 cores as
opposed to the 2 that our builders currently have. Should help make those OSX
builds a bit speedier!
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directive lines
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Fixes #46038
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A few pretty-printers were returning a quoted string from their
to_string method. It's preferable in gdb to return a lazy string and to
let gdb handle the display by having a "display_hint" method that
returns "string" -- it lets gdb settings (like "set print ...") work, it
handles corrupted strings a bit better, and it passes the information
along to IDEs.
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OSX linker bug.
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gdb will now reliably detect the lanugage as rust even before any
code is run.
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