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Potential huge allocations with untrusted len/capacity in <code>ArcBuffer::new</code> and <code>cps::Stack::new</code>

Status: Open.

#2710 In pen-lang/pen;

· cicilzx opened on Feb 5, 2026

<code>Arc::&lt;T&gt;::new</code> panics for <code>i128</code> due to <code>ptr::write</code> alignment precondition

Status: Open.

#2709 In pen-lang/pen;

· cicilzx opened on Feb 5, 2026

Unsoundness in rust pen_ffi

Status: Open.

#2708 In pen-lang/pen;

· xizheyin opened on Jan 19, 2026

arc::tests::zero_sized::clone encounters UB, will fail in Rust 1.83

Status: Open.

#2519 In pen-lang/pen;

· saethlin opened on Oct 7, 2024

Async runtime version mismatch in Rust FFI

bugSomething isn't workingSomething isn't working

Status: Open.

#2248 In pen-lang/pen;

· raviqqe opened on Dec 25, 2023

Error collection in compiler

enhancementNew feature or requestNew feature or request

Status: Open.

#1723 In pen-lang/pen;

· raviqqe opened on Dec 26, 2022

List fusion

enhancementNew feature or requestNew feature or request

Status: Open.

#1646 In pen-lang/pen;

· raviqqe opened on Nov 18, 2022

<code>Uuid</code> package

enhancementNew feature or requestNew feature or request

Status: Open.

#1642 In pen-lang/pen;

· raviqqe opened on Nov 17, 2022

Generalized list pattern match

enhancementNew feature or requestNew feature or request

Status: Open.

#1618 In pen-lang/pen;

· raviqqe opened on Nov 12, 2022

Link arbitrary libraries in FFI

enhancementNew feature or requestNew feature or request

Status: Open.

#1598 In pen-lang/pen;

· raviqqe opened on Nov 5, 2022

<code>sort</code> bulit-in function

enhancementNew feature or requestNew feature or request

Status: Open.

#1592 In pen-lang/pen;

· raviqqe opened on Nov 3, 2022

Pure functions for thunks with constant scalar values

enhancementNew feature or requestNew feature or request

Status: Open.

#1591 In pen-lang/pen;

· raviqqe opened on Nov 3, 2022