diff --git a/tail.c b/tail.c index 306bbc1..417289f 100644 --- a/tail.c +++ b/tail.c @@ -39,6 +39,7 @@ taketail(FILE *fp, const char *str, size_t n) Rune *r = NULL; char **ring = NULL; size_t i, j, *size = NULL; + int seenln = 0; if (!n) return; @@ -47,7 +48,7 @@ taketail(FILE *fp, const char *str, size_t n) ring = ecalloc(n, sizeof(*ring)); size = ecalloc(n, sizeof(*size)); - for (i = j = 0; getline(ring + i, size + i, fp) > 0; ) + for (i = j = 0; getline(ring + i, size + i, fp) > 0; seenln = 1) i = j = (i + 1) % n; } else { r = ecalloc(n, sizeof(*r)); @@ -59,7 +60,7 @@ taketail(FILE *fp, const char *str, size_t n) eprintf("%s: read error:", str); do { - if (ring && ring[j]) { + if (seenln && ring && ring[j]) { fputs(ring[j], stdout); free(ring[j]); } else if (r) {