New default profraw file name in Rust 1.65

[wesleywiser]

Hi @taiki-e!

I just wanted to give you a heads up that we are changing the default profraw file name in Rust 1.65 (rust-lang/rust#100384). Looking over your crate, I don't believe this will affect you since you explicitly set LLVM_PROFILE_FILE but wanted to let you know anyway.

[taiki-e]

Thanks for the heads up!

As you mentioned, we set LLVM_PROFILE_FILE so it would not be affected.

cargo-llvm-cov/src/main.rs

Line 230 in f7870c5

let llvm_profile_file = cx.ws.target_dir.join(format!("{}-%p-%m.profraw", cx.ws.name));

However, rust-lang/rust#100384 may help avoid the problem of profiles being ignored when LLVM_PROFILE_FILE is removed.

cargo-llvm-cov/tests/fixtures/crates/bin_crate/tests/test.rs

Lines 17 to 24 in 863a8a0

	// If you remove the LLVM_PROFILE_FILE environment variable,
	// no profile will be collected.
	assert!(Command::new(env!("CARGO_BIN_EXE_bin_crate"))
	.arg("2")
	.env_remove("LLVM_PROFILE_FILE")
	.status()
	.unwrap()
	.success());

EDIT: It will not help to fix the above problem because the profiles are output in different directories than the one we use.

[taiki-e]

Closing -- We are not affected by this issue.