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compiler crashes when trying to infer return type in impl #25810

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hclarke opened this issue May 27, 2015 · 1 comment
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compiler crashes when trying to infer return type in impl #25810

hclarke opened this issue May 27, 2015 · 1 comment
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E-mentor Call for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion. E-needs-test Call for participation: An issue has been fixed and does not reproduce, but no test has been added.

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@hclarke
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hclarke commented May 27, 2015

i'm using the higher kinded type hack mentioned in this rfc: https://github.com/rust-lang/rfcs/blob/master/text/0195-associated-items.md#encoding-higher-kinded-types

if i use the same function signature in the impl as in the trait, the compiler crashes: https://play.rust-lang.org/?gist=16c39194b959959dc326&version=stable

but if the impl fn's return type is more specific, it works fine: https://play.rust-lang.org/?gist=e94d2b8108f14d6bc370&version=stable
@jdm jdm added the I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ label May 27, 2015
@steveklabnik steveklabnik mentioned this issue Oct 23, 2015
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babbageclunk pushed a commit to babbageclunk/glacier that referenced this issue Nov 4, 2015
25810
5c8af63 
Add rust-lang/rust#25810
@babbageclunk babbageclunk mentioned this issue Nov 4, 2015
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@steveklabnik
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This no longer ICEs as of rustc 1.6.0-nightly (9303055f3 2015-11-19)

@steveklabnik steveklabnik added E-needs-test Call for participation: An issue has been fixed and does not reproduce, but no test has been added. E-mentor Call for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion. and removed I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ labels Nov 19, 2015
@apasel422 apasel422 mentioned this issue Nov 23, 2015
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bors added a commit that referenced this issue Nov 24, 2015
@bors
Auto merge of #30009 - apasel422:tests, r=alexcrichton
bc2894c 
Closes #25810.
Closes #29276.

r? @alexcrichton
bors added a commit that referenced this issue Nov 24, 2015
@bors
Auto merge of #30009 - apasel422:tests, r=alexcrichton
483fb8f 
Closes #25810.
Closes #29276.

r? @alexcrichton
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E-mentor Call for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion. E-needs-test Call for participation: An issue has been fixed and does not reproduce, but no test has been added.
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