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| author | David Thomas <david2005thomas@gmail.com> | 2024-02-14 20:03:55 +0000 |
|---|---|---|
| committer | GnomedDev <david2005thomas@gmail.com> | 2024-02-18 17:57:13 +0000 |
| commit | 04334394337e19e632eba32ae1dfd554f5831b42 (patch) | |
| tree | 8fdde78528b3f76e1d316bef5dd7c3e25ac0d55a | |
| parent | 8daf1375437eb381e10fd4a88da5526c7b3ae64b (diff) | |
| download | rust-04334394337e19e632eba32ae1dfd554f5831b42.tar.gz rust-04334394337e19e632eba32ae1dfd554f5831b42.zip | |
Add some comments to prevent regression
| -rw-r--r-- | library/std/src/sys/pal/common/small_c_string.rs | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/library/std/src/sys/pal/common/small_c_string.rs b/library/std/src/sys/pal/common/small_c_string.rs index 2312e6e5ee2..8e5ecdea9a8 100644 --- a/library/std/src/sys/pal/common/small_c_string.rs +++ b/library/std/src/sys/pal/common/small_c_string.rs @@ -27,6 +27,8 @@ pub fn run_with_cstr<T, F>(bytes: &[u8], mut f: F) -> io::Result<T> where F: FnMut(&CStr) -> io::Result<T>, { + // Dispatch and dyn erase the closure type to prevent mono bloat. + // See https://github.com/rust-lang/rust/pull/121101. if bytes.len() >= MAX_STACK_ALLOCATION { run_with_cstr_allocating(bytes, &mut f) } else { @@ -34,6 +36,9 @@ where } } +/// # Safety +/// +/// `bytes` must have a length less than `MAX_STACK_ALLOCATION`. unsafe fn run_with_cstr_stack<T>( bytes: &[u8], f: &mut dyn FnMut(&CStr) -> io::Result<T>, |