Add a lint mode for unnecessary allocations - #6647
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alexcrichton wants to merge 2 commits into
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\o/ |
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Oh this is so nice. Hurrah! (Wishlist: another one that detects when an argument is passed by |
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I think this needs a test. |
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May 21, 2013
This adds a lint mode for detecting unnecessary allocations on the heap. This isn't super fancy, currently it only has two rules 1. For a function's arguments, if you allocate a `[~|@]str` literal, when the type of the argument is a `&str`, emit a warning. 2. For the same case, emit warnings for boxed vectors when slices are required. After adding the lint, I rampaged through the libraries and removed all the unnecessary allocations I could find.
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This adds a lint mode for detecting unnecessary allocations on the heap. This isn't super fancy, currently it only has two rules
[~|@]strliteral, when the type of the argument is a&str, emit a warning.After adding the lint, I rampaged through the libraries and removed all the unnecessary allocations I could find.