regex test: expect ASSERTION_EXPECTED for /(?(?<ab))/ with PCRE 8.38
PCRE 8.38 changed the parsing of this invalid regex. It still fails,
but with a different error (since PCRE r1539,
<http://vcs.pcre.org/pcre?view=revision&revision=1539>).
The regex /(?P<sub>foo)\g<sub/ used to raise MISSING_BACK_REFERENCE but
now raises MISSING_SUBPATTERN_NAME_TERMINATOR, so we can still have a
test for the latter.
Signed-off-by: Simon McVittie <smcv@debian.org>
Reviewed-by: Emmanuele Bassi <ebassi@gnome.org>
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=759808