X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=sam.c;fp=sam.c;h=a74c557bad9aa83d274ea44bdfe1a16dfbc4d5a6;hb=8a9ee843efcc2ec0cfb553d0b571536cf621864d;hp=b8e7350f3bebd70cd043bf54de02c77315092ee9;hpb=9bd8cd7dd42efa091a9361bb06a29d1bead405ce;p=samtools.git

diff --git a/sam.c b/sam.c
index b8e7350..a74c557 100644
--- a/sam.c
+++ b/sam.c
@@ -158,6 +158,7 @@ int sampileup(samfile_t *fp, int mask, bam_pileup_f func, void *func_data)
 char *samfaipath(const char *fn_ref)
 {
 	char *fn_list = 0;
+	if (fn_ref == 0) return 0;
 	fn_list = calloc(strlen(fn_ref) + 5, 1);
 	strcat(strcpy(fn_list, fn_ref), ".fai");
 	if (access(fn_list, R_OK) == -1) { // fn_list is unreadable