termsize::get() returns (0, 0) when building for release

[renpenguin]

currently running arch linux with zsh as the shell, and finding this to be an issue in both the kitty terminal and vscode's built in terminal. the following program returns my actual terminal size when building with cargo build and (0, 0) when building with cargo build --release:

fn main() {
    println!("{:?}", termsize::get());
}

this issue is present on all versions of termsize, though only a few months ago this wasnt a problem

[0x6b]

@redpenguinyt Although I'm not an owner of this repo, I want to put my two cents in. I have the same issue on macOS, and found that the following commit a.k.a. rust-lang/rust#120055 (stable as of Rust 1.78) introduced this issue, using cargo-bisect-rustc.

• Auto merge of #120055 - nikic:llvm-18, r=cuviper · rust-lang/rust@eaff1af

Since the change was significant (LLVM 17→18) I'm unsure how to proceed for any fix, but I found the following workarounds.

• Set opt-level to 0 or 1 for the release profile with Cargo.toml i.e.

  # Cargo.toml
  [profile.release]
  opt-level = 0 # or 1 will work. 2, 3, "s", "z" will introduce the issue.

• Pin Rust toolchain to 1.77.2 with the toolchain file i.e.

  # rust-toolchain.toml
  [toolchain]
  channel = "1.77.2"

Hope this helps. Thanks!

[softprops]

Hi folks. Someone had kindly contributed a pull request that I still own a crate version publish for that might address this #18

[nidnogg]

Hi! I noticed that PR #18 got merged in. @softprops any chance it might be getting published to Cargo soon?

[bb-Ricardo]

Hi, would highly appreciate a 0.1.7 version on crates.io.

Thank you

[softprops]

Hi, would highly appreciate a 0.1.7 version on crates.io.

done! https://crates.io/crates/termsize

[bb-Ricardo]

Amazing, thank you.