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avoid panic if an app sets an invalid scroll region

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This commit is contained in:
Wez Furlong 2018-02-20 08:42:08 -08:00
parent 9a5e7999da
commit 7c0536f9a3
2 changed files with 3 additions and 3 deletions
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4
term/src/csi.rs
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@ -373,8 +373,8 @@ impl<'a> CSIParser<'a> {
&[top, bottom] => {
self.advance_by(2, params);
Some(CSIAction::SetScrollingRegion {
top: top - 1,
bottom: bottom - 1,
top: top.saturating_sub(1),
bottom: bottom.saturating_sub(1),
})
}
&[] => {

2
term/src/screen.rs
View File

@ -162,7 +162,7 @@ impl Screen {
/// will be invalidated by inserting or removing rows!
#[inline]
pub fn phys_row(&self, row: VisibleRowIndex) -> PhysRowIndex {
assert!(row >= 0);
assert!(row >= 0, "phys_row called with negative row {}", row);
(self.lines.len() - self.physical_rows) + row as usize
}