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add an intrinsic for checking if a type is managed #7139

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thestinger opened this issue Jun 15, 2013 · 1 comment
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add an intrinsic for checking if a type is managed #7139

thestinger opened this issue Jun 15, 2013 · 1 comment
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I-slow Issue: Problems and improvements with respect to performance of generated code.

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@thestinger
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This is needed to call local_malloc/local_free when they're needed from library implementations of smart pointers. Otherwise, you end up having to use ~ pointers for the allocations with the useless 32-byte header.
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This is now added, as contains_managed.

flip1995 pushed a commit to flip1995/rust that referenced this issue Jun 17, 2021
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Auto merge of rust-lang#7288 - camsteffen:use-self2, r=phansch
6379d26 
Fix use_self FPs on type params

changelog: Fix [`use_self`] false positives on type parameters

Fixes rust-lang#4140
Fixes rust-lang#7139
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I-slow Issue: Problems and improvements with respect to performance of generated code.
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