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abort docs: Document buffer non-flushing

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There is discussion of this in #40230 which requests clarification.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
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Ian Jackson 2021-05-17 15:29:47 +01:00 committed by Mara Bos
parent de19e4d2b6
commit 4e7c348140
1 changed files with 3 additions and 0 deletions
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library/std/src/process.rs
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@ -1898,6 +1898,9 @@ pub fn exit(code: i32) -> ! {
/// process, no destructors on the current stack or any other thread's stack
/// will be run.
///
/// Rust IO buffers (eg, from `BufWriter`) will not be flushed.
/// Likewise, C stdio buffers will (on most platforms) not be flushed.
///
/// This is in contrast to the default behaviour of [`panic!`] which unwinds
/// the current thread's stack and calls all destructors.
/// When `panic="abort"` is set, either as an argument to `rustc` or in a