more informative error message

diff --git a/bcftools/bcf.c b/bcftools/bcf.c
index 6e45695cfb8c35a22dc4699728e445129293a699..b749847d2fc1ce7ca5e5cea755258cdb570a8358 100644 (file)
--- a/bcftools/bcf.c
+++ b/bcftools/bcf.c
@@ -106,7 +106,7 @@ int bcf_sync(bcf1_t *b)
        for (p = b->str, n = 0; p < b->str + b->l_str; ++p)
                if (*p == 0 && p+1 != b->str + b->l_str) tmp[n++] = p + 1;
        if (n != 5) {
-               fprintf(stderr, "[%s] incorrect number of fields (%d != 5). Corrupted file?\n", __func__, n);
+               fprintf(stderr, "[%s] incorrect number of fields (%d != 5) at %d:%d\n", __func__, n, b->tid, b->pos);
                return -1;
        }
        b->ref = tmp[0]; b->alt = tmp[1]; b->flt = tmp[2]; b->info = tmp[3]; b->fmt = tmp[4];