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This should not typecheck, but it typechecks

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#11 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
java
Domain
compilers

Research direction

Use the Java snippet in the issue as the reproduction case and run LiquidJava's type checker against it. Trace why the two calls to f() are accepted despite the stated state refinement, then verify that the checker rejects this example while preserving the intended refinement behavior.

Written by the indexing model from the issue text.

Description

bug
@Ghost("int some_other_ghost")
public class Test2 {
    int n = 0;

    @StateRefinement(from="some_other_ghost(this) > 0", to="some_other_ghost(this) < 0")
    private void f(){}

    private void shouldFail(){
        f();
        f();
    }

    public static void main(String[] args) {
        Test2 t = new Test2();
        t.shouldFail();
    }
}
Dominant language
Java
Stars
67
Forks
36
Avg merge
10d 18h
Merged PRs (30d)
3

Contributor guide

Open the contributing guide

First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

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