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Panic when advance_slices()'ing too far.

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This commit is contained in:
Mara Bos 2022-03-11 17:25:04 +01:00
parent 6045c34f15
commit a23e7513fa
1 changed files with 6 additions and 2 deletions
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8
library/std/src/io/mod.rs
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@ -1155,7 +1155,9 @@ impl<'a> IoSliceMut<'a> {
} }
*bufs = &mut replace(bufs, &mut [])[remove..]; *bufs = &mut replace(bufs, &mut [])[remove..];
if !bufs.is_empty() { if bufs.is_empty() {
assert!(n == accumulated_len, "advancing io slices beyond their length");
} else {
bufs[0].advance(n - accumulated_len) bufs[0].advance(n - accumulated_len)
} }
} }
@ -1289,7 +1291,9 @@ impl<'a> IoSlice<'a> {
} }
*bufs = &mut replace(bufs, &mut [])[remove..]; *bufs = &mut replace(bufs, &mut [])[remove..];
if !bufs.is_empty() { if bufs.is_empty() {
assert!(n == accumulated_len, "advancing io slices beyond their length");
} else {
bufs[0].advance(n - accumulated_len) bufs[0].advance(n - accumulated_len)
} }
} }