all of rust codebase: This codebase fails even the most basic miri checks, allows for UB in safe rust · Issue #30719 · oven-sh/bun · GitHub
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src/main.rs:97:18 | 97 | unsafe { core::slice::from_raw_parts(ptr as *const u8, self.len()) } ...">
src/main.rs:97:18 | 97 | unsafe { core::slice::from_ra..." /> src/main.rs:97:18 | 97 | unsafe { core::slice::from_ra..." />
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all of rust codebase: This codebase fails even the most basic miri checks, allows for UB in safe rust #30719
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Open<br>#30728
Open<br>all of rust codebase: This codebase fails even the most basic miri checks, allows for UB in safe rust#30719<br>#30728
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AwesomeQubic<br>opened on May 14, 2026
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src/main.rs:97:18<br>97 | unsafe { core::slice::from_raw_parts(ptr as *const u8, self.len()) }<br>| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Undefined Behavior occurred here<br>= help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior<br>= help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information<br>= note: stack backtrace:<br>0: PathString::slice<br>at src/main.rs:97:18: 97:75<br>1: main<br>at src/main.rs:130:22: 130:34">error: Undefined Behavior: constructing invalid value of type &[u8]: encountered a dangling reference (0x20933[noalloc] has no provenance)<br>--> src/main.rs:97:18<br>97 | unsafe { core::slice::from_raw_parts(ptr as *const u8, self.len()) }<br>| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Undefined Behavior occurred here<br>= help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior<br>= help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information<br>= note: stack backtrace:<br>0: PathString::slice<br>at src/main.rs:97:18: 97:75<br>1: main<br>at src/main.rs:130:22: 130:34
code:
fn main() {<br>let test = Box::new(*b"Hello World");<br>let init = PathString::init(&*test);<br>drop(test);
println!("{:?}", init.slice());
Please consider not vibe coding rust as AIs are not good at writing Rust and also hire a real rust dev
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