diff options
Diffstat (limited to 'src/backend/regex/regcomp.c')
| -rw-r--r-- | src/backend/regex/regcomp.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/backend/regex/regcomp.c b/src/backend/regex/regcomp.c index 4f9da5b0468..6b80140e909 100644 --- a/src/backend/regex/regcomp.c +++ b/src/backend/regex/regcomp.c @@ -1088,8 +1088,12 @@ parseqatom(struct vars * v, NOERR(); } - /* it's quantifier time; first, turn x{0,...} into x{1,...}|empty */ - if (m == 0) + /* + * It's quantifier time. If the atom is just a BACKREF, we'll let it deal + * with quantifiers internally. Otherwise, the first step is to turn + * x{0,...} into x{1,...}|empty + */ + if (m == 0 && atomtype != BACKREF) { EMPTYARC(s2, atom->end); /* the bypass */ assert(PREF(qprefer) != 0); |