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Associated type bounded on another associated type with a default fails #76179
Labels
C-bug
Category: This is a bug.
E-needs-test
Call for participation: An issue has been fixed and does not reproduce, but no test has been added.
F-associated_type_defaults
`#![feature(associated_type_defaults)]`
requires-nightly
This issue requires a nightly compiler in some way.
T-compiler
Relevant to the compiler team, which will review and decide on the PR/issue.
Comments
jonas-schievink
added
F-associated_type_defaults
`#![feature(associated_type_defaults)]`
requires-nightly
This issue requires a nightly compiler in some way.
T-compiler
Relevant to the compiler team, which will review and decide on the PR/issue.
labels
Aug 31, 2020
matthewjasper
added
the
E-needs-test
Call for participation: An issue has been fixed and does not reproduce, but no test has been added.
label
Oct 15, 2020
This compiles on nightly now |
JohnTitor
referenced
this issue
in JohnTitor/rust
Mar 6, 2021
…nkov Move some tests to more suitable subdirs ## The results from classifui (The full results can be found here: https://gist.github.com/JohnTitor/c9e00840990b5e4a8fc562ec3571e427) - [lint-expr-stmt-attrs-for-early-lints.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/lint-expr-stmt-attrs-for-early-lints.rs) <sup>unknown</sup>: lint (1.566), feature-gates (-0.632), numbers-arithmetic (-0.955) - [try-block.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/try-block.rs) <sup>unknown</sup>: binding (1.385), try-block (-0.097), lint (-0.932) - [backtrace-debuginfo.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/backtrace-debuginfo.rs) <sup>unknown</sup>: macros (1.365), cfg (-0.279), drop (-0.291) - [issues/issue-3521.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-3521.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/3521)</sup>: consts (1.298), enum (-0.872), in-band-lifetimes (-0.978) - [impl-bounds-checking.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/impl-bounds-checking.rs) <sup>unknown</sup>: traits (1.243), for (-0.999), shadowed (-0.999) - [issues/issue-17718.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-17718.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/17718)</sup>: binding (1.236), consts (0.315), extern (-0.779) - [issue-6157.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issue-6157.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/6157)</sup>: regions (1.213), unboxed-closures (-0.285), traits (-0.510) - [issues/issue-44373.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-44373.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/44373)</sup>: consts (1.187), nll (0.427), borrowck (-0.704) - [nullable-pointer-ffi-compat.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/nullable-pointer-ffi-compat.rs) <sup>unknown</sup>: regions (1.184), consts (0.650), traits (-0.571) - [issues/issue-52992.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-52992.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/52992)</sup>: nll (1.132), associated-types (-0.628), parser (-0.893) - [issues/issue-2330.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-2330.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/2330)</sup>: traits (1.116), directory_ownership (-0.691), compare-method (-0.981) - [issue-74047.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issue-74047.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/74047)</sup>: async-await (1.109), impl-trait (-0.629), resolve (-0.781) - [issues/issue-33140.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-33140.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/33140)</sup>: traits (1.063), coherence (-0.832), codemap_tests (-0.944) - [issues/issue-28576.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-28576.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/28576)</sup>: traits (1.062), associated-types (-0.333), impl-trait (-0.697) - [issues/issue-7222.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-7222.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/7222)</sup>: binding (1.062), consts (-0.226), numbers-arithmetic (-0.294) - [tup.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/tup.rs) <sup>unknown</sup>: structs-enums (1.061), threads-sendsync (-0.550), moves (-0.790) - [issues/issue-15261.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-15261.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/15261)</sup>: consts (1.052), where-clauses (-0.833), macros (-0.862) - [issues/issue-76179.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-76179.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/76179)</sup>: associated-types (1.048), process (-0.887), rfc-2457 (-0.984) - [issues/issue-42344.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-42344.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/42344)</sup>: borrowck (1.043), macros (-0.481), specialization (-0.966) - [issues/issue-18661.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-18661.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/18661)</sup>: unboxed-closures (1.038), mir (-0.648), higher-rank-trait-bounds (-0.688) - [issues/issue-2633.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-2633.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/2633)</sup>: structs-enums (1.020), functions-closures (-0.722), lint (-0.967) Some notes: - If there are related tests (e.g. it's for the same issue), they are moved along with it. - Moved try-block.rs to the `try-block` dir. - Moved tup.rs to the `tuple` dir. - Moved some tests that classified as consts to the `statics` dir, as it seems they have statics actually. - Skipped backtrace-debuginfo.rs because I think classifui overrates their helper macros. cc rust-lang#73494 r? `@petrochenkov`
m-ou-se
referenced
this issue
in m-ou-se/rust
Mar 6, 2021
…nkov Move some tests to more suitable subdirs ## The results from classifui (The full results can be found here: https://gist.github.com/JohnTitor/c9e00840990b5e4a8fc562ec3571e427) - [lint-expr-stmt-attrs-for-early-lints.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/lint-expr-stmt-attrs-for-early-lints.rs) <sup>unknown</sup>: lint (1.566), feature-gates (-0.632), numbers-arithmetic (-0.955) - [try-block.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/try-block.rs) <sup>unknown</sup>: binding (1.385), try-block (-0.097), lint (-0.932) - [backtrace-debuginfo.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/backtrace-debuginfo.rs) <sup>unknown</sup>: macros (1.365), cfg (-0.279), drop (-0.291) - [issues/issue-3521.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-3521.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/3521)</sup>: consts (1.298), enum (-0.872), in-band-lifetimes (-0.978) - [impl-bounds-checking.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/impl-bounds-checking.rs) <sup>unknown</sup>: traits (1.243), for (-0.999), shadowed (-0.999) - [issues/issue-17718.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-17718.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/17718)</sup>: binding (1.236), consts (0.315), extern (-0.779) - [issue-6157.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issue-6157.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/6157)</sup>: regions (1.213), unboxed-closures (-0.285), traits (-0.510) - [issues/issue-44373.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-44373.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/44373)</sup>: consts (1.187), nll (0.427), borrowck (-0.704) - [nullable-pointer-ffi-compat.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/nullable-pointer-ffi-compat.rs) <sup>unknown</sup>: regions (1.184), consts (0.650), traits (-0.571) - [issues/issue-52992.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-52992.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/52992)</sup>: nll (1.132), associated-types (-0.628), parser (-0.893) - [issues/issue-2330.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-2330.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/2330)</sup>: traits (1.116), directory_ownership (-0.691), compare-method (-0.981) - [issue-74047.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issue-74047.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/74047)</sup>: async-await (1.109), impl-trait (-0.629), resolve (-0.781) - [issues/issue-33140.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-33140.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/33140)</sup>: traits (1.063), coherence (-0.832), codemap_tests (-0.944) - [issues/issue-28576.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-28576.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/28576)</sup>: traits (1.062), associated-types (-0.333), impl-trait (-0.697) - [issues/issue-7222.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-7222.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/7222)</sup>: binding (1.062), consts (-0.226), numbers-arithmetic (-0.294) - [tup.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/tup.rs) <sup>unknown</sup>: structs-enums (1.061), threads-sendsync (-0.550), moves (-0.790) - [issues/issue-15261.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-15261.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/15261)</sup>: consts (1.052), where-clauses (-0.833), macros (-0.862) - [issues/issue-76179.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-76179.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/76179)</sup>: associated-types (1.048), process (-0.887), rfc-2457 (-0.984) - [issues/issue-42344.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-42344.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/42344)</sup>: borrowck (1.043), macros (-0.481), specialization (-0.966) - [issues/issue-18661.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-18661.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/18661)</sup>: unboxed-closures (1.038), mir (-0.648), higher-rank-trait-bounds (-0.688) - [issues/issue-2633.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-2633.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/2633)</sup>: structs-enums (1.020), functions-closures (-0.722), lint (-0.967) Some notes: - If there are related tests (e.g. it's for the same issue), they are moved along with it. - Moved try-block.rs to the `try-block` dir. - Moved tup.rs to the `tuple` dir. - Moved some tests that classified as consts to the `statics` dir, as it seems they have statics actually. - Skipped backtrace-debuginfo.rs because I think classifui overrates their helper macros. cc rust-lang#73494 r? ``@petrochenkov``
JohnTitor
referenced
this issue
in JohnTitor/rust
Mar 7, 2021
…nkov Move some tests to more suitable subdirs ## The results from classifui (The full results can be found here: https://gist.github.com/JohnTitor/c9e00840990b5e4a8fc562ec3571e427) - [lint-expr-stmt-attrs-for-early-lints.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/lint-expr-stmt-attrs-for-early-lints.rs) <sup>unknown</sup>: lint (1.566), feature-gates (-0.632), numbers-arithmetic (-0.955) - [try-block.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/try-block.rs) <sup>unknown</sup>: binding (1.385), try-block (-0.097), lint (-0.932) - [backtrace-debuginfo.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/backtrace-debuginfo.rs) <sup>unknown</sup>: macros (1.365), cfg (-0.279), drop (-0.291) - [issues/issue-3521.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-3521.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/3521)</sup>: consts (1.298), enum (-0.872), in-band-lifetimes (-0.978) - [impl-bounds-checking.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/impl-bounds-checking.rs) <sup>unknown</sup>: traits (1.243), for (-0.999), shadowed (-0.999) - [issues/issue-17718.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-17718.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/17718)</sup>: binding (1.236), consts (0.315), extern (-0.779) - [issue-6157.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issue-6157.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/6157)</sup>: regions (1.213), unboxed-closures (-0.285), traits (-0.510) - [issues/issue-44373.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-44373.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/44373)</sup>: consts (1.187), nll (0.427), borrowck (-0.704) - [nullable-pointer-ffi-compat.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/nullable-pointer-ffi-compat.rs) <sup>unknown</sup>: regions (1.184), consts (0.650), traits (-0.571) - [issues/issue-52992.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-52992.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/52992)</sup>: nll (1.132), associated-types (-0.628), parser (-0.893) - [issues/issue-2330.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-2330.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/2330)</sup>: traits (1.116), directory_ownership (-0.691), compare-method (-0.981) - [issue-74047.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issue-74047.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/74047)</sup>: async-await (1.109), impl-trait (-0.629), resolve (-0.781) - [issues/issue-33140.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-33140.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/33140)</sup>: traits (1.063), coherence (-0.832), codemap_tests (-0.944) - [issues/issue-28576.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-28576.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/28576)</sup>: traits (1.062), associated-types (-0.333), impl-trait (-0.697) - [issues/issue-7222.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-7222.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/7222)</sup>: binding (1.062), consts (-0.226), numbers-arithmetic (-0.294) - [tup.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/tup.rs) <sup>unknown</sup>: structs-enums (1.061), threads-sendsync (-0.550), moves (-0.790) - [issues/issue-15261.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-15261.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/15261)</sup>: consts (1.052), where-clauses (-0.833), macros (-0.862) - [issues/issue-76179.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-76179.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/76179)</sup>: associated-types (1.048), process (-0.887), rfc-2457 (-0.984) - [issues/issue-42344.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-42344.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/42344)</sup>: borrowck (1.043), macros (-0.481), specialization (-0.966) - [issues/issue-18661.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-18661.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/18661)</sup>: unboxed-closures (1.038), mir (-0.648), higher-rank-trait-bounds (-0.688) - [issues/issue-2633.rs](https://github.com/rust-lang/rust/blob/master/src/test/ui/issues/issue-2633.rs) <sup>[issue](https://github.com/rust-lang/rust/issues/2633)</sup>: structs-enums (1.020), functions-closures (-0.722), lint (-0.967) Some notes: - If there are related tests (e.g. it's for the same issue), they are moved along with it. - Moved try-block.rs to the `try-block` dir. - Moved tup.rs to the `tuple` dir. - Moved some tests that classified as consts to the `statics` dir, as it seems they have statics actually. - Skipped backtrace-debuginfo.rs because I think classifui overrates their helper macros. cc rust-lang#73494 r? ```@petrochenkov```
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Labels
C-bug
Category: This is a bug.
E-needs-test
Call for participation: An issue has been fixed and does not reproduce, but no test has been added.
F-associated_type_defaults
`#![feature(associated_type_defaults)]`
requires-nightly
This issue requires a nightly compiler in some way.
T-compiler
Relevant to the compiler team, which will review and decide on the PR/issue.
I tried this code:
I expected to see this happen:
View::Deserializers
has the as of yet unspecified typeDeserializer<Item=Self::RequestParams>
.Instead, this happened:
This error does not occur when the default is removed.
Meta
rustc --version --verbose
:See also: My initial question on the internals forum
RFC 2532 (assocaited type defaults
cc @jonas-schievink
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