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bug: compilation panic: cairo-lang-lowering IndexMap: key not found #7095

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MagisterDallis opened this issue Jan 15, 2025 · 0 comments · May be fixed by #7112
Open

bug: compilation panic: cairo-lang-lowering IndexMap: key not found #7095

MagisterDallis opened this issue Jan 15, 2025 · 0 comments · May be fixed by #7112
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@MagisterDallis
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Bug Report

3e611b5
Cairo version:

Current behavior:
With the changes made in #7094, the code no longer compiles, and panics instead of succeeding (or failing) compilation.
I'm unsure what exactly causes the bug - will try to give a MRE when I can.

related code:

    #[inline]
    fn count<+Destruct<T>, +Destruct<Self::Item>>(
        self: T,
    ) -> usize {
        let mut self = self;
        Self::fold(ref self, 0_usize, |count, _x| {
            count + 1
        })
    }

panic trace:

thread '<unnamed>' panicked at crates/cairo-lang-lowering/src/db.rs:399:47:
IndexMap: key not found
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
thread 'main' panicked at crates/cairo-lang-lowering/src/db.rs:399:47:
IndexMap: key not found
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Removed the concrete trait from generated closure function key. starkware-libs/cairo
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@MagisterDallis