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Diffstat (limited to 'src/backend/regex/regc_nfa.c')
| -rw-r--r-- | src/backend/regex/regc_nfa.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/backend/regex/regc_nfa.c b/src/backend/regex/regc_nfa.c index 06bbcae0ee3..4b19740788e 100644 --- a/src/backend/regex/regc_nfa.c +++ b/src/backend/regex/regc_nfa.c @@ -2229,9 +2229,12 @@ fixempties(struct nfa *nfa, * current target state. totalinarcs is probably a considerable * overestimate of the space needed, but the NFA is unlikely to be large * enough at this point to make it worth being smarter. + * + * Note: totalinarcs could be zero, and some machines return NULL for + * malloc(0). Don't throw an error if so. */ arcarray = (struct arc **) MALLOC(totalinarcs * sizeof(struct arc *)); - if (arcarray == NULL) + if (arcarray == NULL && totalinarcs != 0) { NERR(REG_ESPACE); FREE(inarcsorig); |