https://bugs.exim.org/show_bug.cgi?id=2771
Bug ID: 2771
Summary: (*MARK) not returned from group with possessive
repetition
Product: PCRE
Version: 8.44
Hardware: x86-64
OS: Windows
Status: NEW
Severity: bug
Priority: medium
Component: Code
Assignee: Philip.Hazel@???
Reporter: unravelin@???
CC: pcre-dev@???
When (*MARK:NAME) is used inside a group which has a possessive quantifier with
no upper bound, the mark is not returned. For example, with pcretest:
re> /(?:A(*:X))*+/K
data> A
0: A
By contrast, the mark is returned after removing + or adding an upper bound:
re> /(?:A(*:X))*/K
data> A
0: A
MK: X
re> /(A(*:X)){1,999}+/K
data> A
0: A
1: A
MK: X
If a previous mark was set it is returned instead:
re> /(*:Y)(A(*:X))*+/K
data> A
0: A
1: A
MK: Y
>From what I can tell this occurs because OP_MARK receives a return code of
MATCH_KETRPOS but sets mark only when it receives MATCH_MATCH or MATCH_ACCEPT.
Adding a check for MATCH_KETRPOS appears to solve the problem, but I'm not sure
this is correct for all cases.
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