bjoernager/rust
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Adjust borrow checker algorithm to address #4856 unsoundness,

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and then adjust code to match. rs=unsound (will review post-landing)
This commit is contained in:
Niko Matsakis 2013-02-08 22:21:45 -08:00
parent 91c59f5c9a
commit ab2534974c
25 changed files with 1046 additions and 575 deletions
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8
src/libcore/str.rs
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@ -2071,17 +2071,19 @@ pub mod raw {
/// Appends a byte to a string. (Not UTF-8 safe).
pub unsafe fn push_byte(s: &mut ~str, b: u8) {
reserve_at_least(&mut *s, s.len() + 1);
let new_len = s.len() + 1;
reserve_at_least(&mut *s, new_len);
do as_buf(*s) |buf, len| {
let buf: *mut u8 = ::cast::reinterpret_cast(&buf);
*ptr::mut_offset(buf, len) = b;
}
set_len(&mut *s, s.len() + 1);
set_len(&mut *s, new_len);
}
/// Appends a vector of bytes to a string. (Not UTF-8 safe).
unsafe fn push_bytes(s: &mut ~str, bytes: &[u8]) {
reserve_at_least(&mut *s, s.len() + bytes.len());
let new_len = s.len() + bytes.len();
reserve_at_least(&mut *s, new_len);
for vec::each(bytes) |byte| { push_byte(&mut *s, *byte); }
}