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52517: ensure that %H is followed by {

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The previous code would accept any character after %H assuming it
was a {, which was probably also a buffer overrun sometimes.
This commit is contained in:
Mikael Magnusson 2024-02-04 16:44:21 +01:00
parent ec446a6f34
commit 653be0823d
2 changed files with 8 additions and 4 deletions

2
ChangeLog
View file

@ -2,6 +2,8 @@
* 52516: Src/prompt.c: fix crash in %H when hlgroups is empty
* 52517: Src/prompt.c: ensure that %H is followed by {
2024-02-03 Bart Schaefer <schaefer@zsh.org>
* unposted: Util/printdefines: updates and fix omissions

2
Src/prompt.c
View file

@ -605,11 +605,13 @@ putpromptchar(int doprint, int endchar)
applytextattributes(TSC_PROMPT);
break;
case 'H':
if (bv->fm[1] == '{') {
bv->fm = parsehighlight(bv->fm + 2, '}', &atr);
if (atr != TXT_ERROR) {
treplaceattrs(atr);
applytextattributes(TSC_PROMPT);
}
}
break;
case '[':
if (idigit(*++bv->fm))