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csi: clamp REP count to scrollback-lines * cols

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This can be quite a lot, but hopefully less than 0x7fffffff, which is
the max value a VT parameter can have...

Closes #2366
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Daniel Eklöf 2026-06-24 13:06:16 +02:00
parent 01b3e7ed92
commit e24ad0a793
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1 changed files with 2 additions and 1 deletions
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csi.c
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@ -798,7 +798,8 @@ csi_dispatch(struct terminal *term, uint8_t final)
* ECMA-48, the behaviour is undefined if REP was
* _not_ preceded by a graphical character.
*/
int count = vt_param_get(term, 0, 1);
const size_t max_count = term->grid->num_rows * term->cols;
int count = min(vt_param_get(term, 0, 1), max_count);
LOG_DBG("REP: '%lc' %d times", (wint_t)term->vt.last_printed, count);
int width;