https://bugs.exim.org/show_bug.cgi?id=2621
Bug ID: 2621
Summary: Regression in JIT pattern matching
Product: PCRE
Version: 10.35 (PCRE2)
Hardware: x86-64
OS: Windows
Status: NEW
Severity: bug
Priority: medium
Component: Code
Assignee: p...@hermes.cam.ac.uk
Reporter: cmbecke...@gmx.de
CC: pcre-dev@exim.org
I'm forwarding this from <https://bugs.php.net/79846>, since it doesn't appear
to be PHP related.
The problem is that the pattern /([a-z]+_[a-z]+_*[a-z]+)_?(\d+)?/ does no
longer match the string component_phase_1 when JIT is enabled. This happens as
of pcre2-10.35 (and still with current HEAD), but worked as expected with
pcre2-10.34.
Good:
./pcre2test -jit
PCRE2 version 10.34 2019-11-21
re> /([a-z]+_[a-z]+_*[a-z]+)_?(\d+)?/
data> component_phase_1
0: component_phase_1
1: component_phase
2: 1
Bad:
./pcre2test -jit
PCRE2 version 10.36-RC1 2020-06-01
re> /([a-z]+_[a-z]+_*[a-z]+)_?(\d+)?/
data> component_phase_1
No match
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