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Compiler warning for "condition is always true" #342

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pcwalton opened this issue Apr 27, 2011 · 4 comments
Closed

Compiler warning for "condition is always true" #342

pcwalton opened this issue Apr 27, 2011 · 4 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. E-easy Call for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue.
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old 1.0 milestone

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@pcwalton
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while (i >= 0u) cost a morning. We should add a warning for this.
@brson
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brson commented Mar 5, 2012

We have some functions for evaluating const expressions, I believe in ast_util that could be used for this.

@catamorphism
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Also see #1417

@veddan
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veddan commented Oct 24, 2012

Some simple cases can be handled by #3833.

@graydon
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graydon commented Nov 21, 2012

Type limits catches this case. If others show up we're not catching, we can look at them as they arise. Closing.

@graydon graydon closed this as completed Nov 21, 2012
oli-obk added a commit to oli-obk/rust that referenced this issue Sep 19, 2017
@oli-obk
Merge pull request rust-lang#342 from RalfJung/mir-validate
6d4840e 
validation: check that int, float etc. are not undef
keeperofdakeys pushed a commit to keeperofdakeys/rust that referenced this issue Dec 12, 2017
@alexcrichton
Merge pull request rust-lang#342 from knight42/getpw
932f22b 
Add functions to get password/group file entry
workingjubilee pushed a commit to workingjubilee/rustc that referenced this issue May 10, 2023
@calebzulawski
Merge pull request rust-lang#342 from rust-lang/load-store
195d4ca 
Fix {to,from}_array UB when repr(simd) produces padding
celinval pushed a commit to celinval/rust-dev that referenced this issue Jun 4, 2024
@avanhatt @tedinski
Fix dyn trait _fail tests compilation errors (rust-lang#342)
58a47cd
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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. E-easy Call for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue.
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@graydon @brson @pcwalton @veddan @catamorphism