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Rust: Work around 'error[E0599]: no method named leak found for struct std::string::String in the current scope'

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Compiling with Debian GNU/Linux 12 (bookworm) packages:

    $ apt-cache madison cargo rustc
         cargo | 0.66.0+ds1-1 | http://deb.debian.org/debian bookworm/main ppc64el Packages
         cargo | 0.66.0+ds1-1 | http://deb.debian.org/debian bookworm/main Sources
         rustc | 1.63.0+dfsg1-2 | http://deb.debian.org/debian bookworm/main ppc64el Packages
         rustc | 1.63.0+dfsg1-2 | http://deb.debian.org/debian bookworm/main Sources

..., we run into:

       Compiling libformat_parser v0.1.0 ([...]/source-gcc/libgrust/libformat_parser)
    error[E0599]: no method named `leak` found for struct `std::string::String` in the current scope
       --> src/lib.rs:396:18
        |
    396 |         ptr: str.leak().as_ptr(),
        |                  ^^^^ method not found in `std::string::String`

    error[E0599]: no method named `leak` found for struct `std::string::String` in the current scope
       --> src/lib.rs:434:7
        |
    434 |     s.leak();
        |       ^^^^ method not found in `std::string::String`

    error[E0599]: no method named `leak` found for struct `std::string::String` in the current scope
       --> src/lib.rs:439:23
        |
    439 |         ptr: cloned_s.leak().as_ptr(),
        |                       ^^^^ method not found in `std::string::String`

Locally replace 1.72.0+ method 'leak' for struct 'std::string::String'.

	libgrust/
	* libformat_parser/src/lib.rs: Work around 'error[E0599]:
	no method named `leak` found for struct `std::string::String` in the current scope'.
This commit is contained in:
Thomas Schwinge 2024-08-03 16:39:17 +02:00
parent 85f81ba60e
commit 9e4a87ceb3
1 changed files with 10 additions and 3 deletions
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13
libgrust/libformat_parser/src/lib.rs
View file

@ -5,6 +5,13 @@
use std::ffi::CStr;
// Local replacement for 1.72.0+ method 'leak' for struct 'std::string::String',
// <https://doc.rust-lang.org/1.72.0/src/alloc/string.rs.html#1853>
fn leak_string<'a>(s: String) -> &'a mut str {
let slice = s.into_bytes().leak();
unsafe { std::str::from_utf8_unchecked_mut(slice) }
}
trait IntoFFI<T> {
fn into_ffi(self) -> T;
}
@ -393,7 +400,7 @@ pub extern "C" fn collect_pieces(
let rust_string = RustString {
len: str.len(),
cap: str.capacity(),
ptr: str.leak().as_ptr(),
ptr: leak_string(str).as_ptr(),
};
FormatArgsHandle(piece_slice, rust_string)
@ -431,12 +438,12 @@ pub extern "C" fn clone_pieces(
let cloned_s = s.clone();
// FIXME: Documentation
s.leak();
leak_string(s);
let rust_string = RustString {
len: cloned_s.len(),
cap: cloned_s.capacity(),
ptr: cloned_s.leak().as_ptr(),
ptr: leak_string(cloned_s).as_ptr(),
};
FormatArgsHandle(piece_slice, rust_string)