fixed a bug caused by a recent patch

diff --git a/bam_index.c b/bam_index.c
index c65d512320289a98c8bd6c75ecbe0ddebded2bc1..9b71bdbac9167ec38719be411ee6d42a276c927f 100644 (file)
--- a/bam_index.c
+++ b/bam_index.c
@@ -179,11 +179,11 @@ bam_index_t *bam_index_core(bamFile fp)
                if (last_tid < c->tid) { // change of chromosomes
                        last_tid = c->tid;
                        last_bin = 0xffffffffu;
-               } else if (last_tid > c->tid) {
+               } else if ((uint32_t)last_tid > (uint32_t)c->tid) {
                        fprintf(stderr, "[bam_index_core] the alignment is not sorted (%s): %d-th chr > %d-th chr\n",
                                        bam1_qname(b), last_tid+1, c->tid+1);
                        return NULL;
-               } else if (last_coor > c->pos) {
+               } else if ((int32_t)c->tid >= 0 && last_coor > c->pos) {
                        fprintf(stderr, "[bam_index_core] the alignment is not sorted (%s): %u > %u in %d-th chr\n",
                                        bam1_qname(b), last_coor, c->pos, c->tid+1);
                        return NULL;