println!() can cause panic outside catch_unwind()

[LegionMammal978]

The miniz_oxide_c_api wrappers in src/lib.rs call println!("FATAL ERROR: Caught panic!"); when a panic is caught. println!() can panic if it fails to write, causing UB if panic = "abort" is not set. Replacing it with let _ = write!(io::stdout(), "FATAL ERROR: Caught panic!"); would make it ignore any write errors.

(As a side note, I tried to find any code paths that actually cause a panic, but could not find any. Is miniz_oxide designed to never panic in the absence of bugs?)

[oyvindln]

Ah, should look at finding some other way to handle that then

And yeah miniz isn't designed to explicitly panic anywhere (though it's plausible that improper use of the unsafe c api bits could cause out of bounds panics or similar.)