Feature gate: #![feature(c_str_module)]

This is a tracking issue for the std::ffi::c_str module.

Public API

This adds {core, alloc, std}::ffi::c_str modules and migrates some existing types into them. Types will still be re-exported in their current places to ensure compatibility.

The following migrations are made:

• core::ffi::CStr => core::ffi::c_str::CStr
• core::ffi::FromBytesUntilNulError => core::ffi::c_str::FromBytesUntilNulError
• core::ffi::FromBytesWithNulError => core::ffi::c_str::FromBytesWithNulError
• alloc::ffi::CString => alloc::ffi::c_str::CString
• alloc::ffi::FromVecWIthNulError => alloc::ffi::c_str::FromVecWIthNulError
• alloc::ffi::IntoStringError => alloc::ffi::c_str::IntoStringError
• alloc::ffi::NulError => alloc::ffi::c_str::NulError

And these types are also migrated on the std crate as well.

Steps / History

• API change proposal (ACP)¹: ACP: std::ffi::c and std::ffi::os submodules libs-team#134
• Implementation: Add std::ffi::c_str module #112136
• Final comment period (FCP)²
• Stabilization PR

Unresolved Questions

• Should c_str and c_string be separated? This was not discussed in the original ACP.