Skip to content

Compiler warning for "condition is always true" #342

New issue
New issue
Closed
Closed
Compiler warning for "condition is always true"#342
Labels
A-lintsArea: Lints (warnings about flaws in source code) such as unused_mut.C-enhancementCategory: An issue proposing an enhancement or a PR with one.E-easyCall for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue.
Milestone
 
old 1.0 milestone
@pcwalton

Description

@pcwalton
pcwalton
opened on Apr 27, 2011
Contributor

while (i >= 0u) cost a morning. We should add a warning for this.

Activity

brson

brson commented on Mar 5, 2012

@brson
brson
on Mar 5, 2012
Contributor

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

catamorphism

catamorphism commented on Mar 15, 2012

@catamorphism
catamorphism
on Mar 15, 2012
Contributor

Also see #1417

veddan

veddan commented on Oct 24, 2012

@veddan
veddan
on Oct 24, 2012
Contributor

Some simple cases can be handled by #3833.

graydon

graydon commented on Nov 21, 2012

@graydon
graydon
on Nov 21, 2012
Contributor

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

graydon
closed this as completedon Nov 21, 2012
oli-obk
added a commit that references this issue on Sep 19, 2017

Merge pull request rust-lang#342 from RalfJung/mir-validate

6d4840e
keeperofdakeys
added a commit that references this issue on Dec 12, 2017

Merge pull request rust-lang#342 from knight42/getpw

932f22b
workingjubilee
added a commit that references this issue on May 10, 2023

Merge pull request rust-lang#342 from rust-lang/load-store

195d4ca
celinval
added a commit that references this issue on Jun 4, 2024

Fix dyn trait _fail tests compilation errors (rust-lang#342)

58a47cd
carolynzech
added a commit that references this issue on May 7, 2025

Merge subtree update for toolchain nightly-2025-04-24 (rust-lang#342)

23a9436
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

No one assigned

    Labels

    A-lintsArea: Lints (warnings about flaws in source code) such as unused_mut.C-enhancementCategory: An issue proposing an enhancement or a PR with one.E-easyCall for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue.

    Type

    No type

    Projects

    No projects

    Milestone

    Relationships

    None yet

      Development

      No branches or pull requests

        Participants

        @graydon@brson@pcwalton@veddan@catamorphism

        Issue actions
          Compiler warning for "condition is always true" · Issue #342 · rust-lang/rust