Fix BTreeSet and BTreeMap gdb pretty-printers #56144
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Bah, the long-fixed https://sourceware.org/bugzilla/show_bug.cgi?id=17386. |
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 rust-lang#55771
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Nov 25, 2018
…ichton 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 rust-lang#55771
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Rollup of 14 pull requests Successful merges: - #56024 (Don't auto-inline const functions) - #56045 (Check arg/ret sizedness at ExprKind::Path) - #56072 (Stabilize macro_literal_matcher) - #56075 (Encode a custom "producers" section in wasm files) - #56100 (generator fields are not necessarily initialized) - #56101 (Incorporate `dyn` into more comments and docs.) - #56144 (Fix BTreeSet and BTreeMap gdb pretty-printers) - #56151 (Move a flaky process test out of libstd) - #56170 (Fix self profiler ICE on Windows) - #56176 (Panic setup msg) - #56204 (Suggest correct enum variant on typo) - #56207 (Stabilize the int_to_from_bytes feature) - #56210 (read_c_str should call the AllocationExtra hooks) - #56211 ([master] Forward-ports from beta) Failed merges: r? @ghost
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Mar 22, 2020
…Mark-Simulacrum
Test gdb pretty printing more and fix overzealous type substitution
Adresses a problem concerning printing BTreeMap / BTreeSet data in gdb: when the key or value type name contains substring "LeafNode", and the map has multiple nodes (e.g. more than 11 elements), printing causes an exception. E.g.
```
rustc -g - <<EOF
use std::collections::BTreeMap;
struct MyLeafNode(i8);
fn main() {
let m: BTreeMap<i8, MyLeafNode> = (0..12).map(|i| (i, MyLeafNode(i))).collect();
assert!(!m.is_empty());
}
EOF
```
```
$ rust-gdb rust_out
(gdb) b 7
(gdb) r
(gdb) p m
$1 = BTreeMap<i8, rust_out::MyLeafNode>(len: 12)Python Exception <class 'gdb.error'> No type named alloc::collections::btree::node::InternalNode<i8, rust_out::MyInternalNode>.:
use std::collections::BTreeMap;
```
The code was written in rust-lang#56144 by @tromey (and later touched upon by @RalfJung in rust-lang#57045, but I think that had nothing to do with the issues in this PR).
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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