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Lint warning when unsafe blocks or functions do nothing unsafe #1913

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brson opened this issue Feb 29, 2012 · 3 comments
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Lint warning when unsafe blocks or functions do nothing unsafe #1913

brson opened this issue Feb 29, 2012 · 3 comments
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A-lint Area: Lints (warnings about flaws in source code) such as unused_mut. C-enhancement Category: An issue proposing an enhancement or a PR with one.
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old 1.0 milestone

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@brson
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brson commented Feb 29, 2012

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@ghost ghost assigned lht Mar 8, 2012
@catamorphism
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assigned to @lht , who appears to be responsible for many things linty.

@catamorphism
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Cleared assignee.

@ghost ghost mentioned this issue Mar 22, 2013
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@catamorphism
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More important than "enhancement" now, IMO.

@alexcrichton alexcrichton mentioned this issue Apr 9, 2013
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bors added a commit that referenced this issue Apr 15, 2013
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auto merge of #5797 : alexcrichton/rust/issue-1913, r=catamorphism
4beebc4 
Closes #5487, #1913, and #4568

I tracked this by adding all used unsafe blocks/functions to a set on the `tcx` passed around, and then when the lint pass comes around if an unsafe block/function isn't listed in that set, it's unused.

I also removed everything from the compiler that was unused, and up to stage2 is now compiling without any known unused unsafe blocks.

I chose `unused_unsafe` as the name of the lint attribute, but there may be a better name...
@sanxiyn sanxiyn closed this as completed Apr 16, 2013
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A-lint Area: Lints (warnings about flaws in source code) such as unused_mut. C-enhancement Category: An issue proposing an enhancement or a PR with one.
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