1 files changed, 57 insertions, 0 deletions
diff --git a/tests/test29.c b/tests/test29.c
new file mode 100644
index 000000000..e579a0e23
--- /dev/null
+++ b/tests/test29.c
@@ -0,0 +1,57 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "utlist.h"
+
+#define BUFLEN 20
+
+typedef struct el {
+    char bname[BUFLEN];
+    struct el *next, *prev;
+} el;
+
+static int namecmp(void *_a, void *_b)
+{
+    el *a = (el*)_a;
+    el *b = (el*)_b;
+    return strcmp(a->bname,b->bname);
+}
+
+int main()
+{
+    el *name, *tmp;
+    el *head = NULL;
+
+    char linebuf[BUFLEN];
+    FILE *file;
+
+    file = fopen( "test11.dat", "r" );
+    if (file == NULL) {
+        perror("can't open: ");
+        exit(-1);
+    }
+
+    while (fgets(linebuf,BUFLEN,file) != NULL) {
+        name = (el*)malloc(sizeof(el));
+        if (name == NULL) {
+            exit(-1);
+        }
+        strcpy(name->bname, linebuf);
+        DL_APPEND(head, name);
+    }
+    DL_SORT(head, namecmp);
+    DL_FOREACH(head,tmp) {
+        printf("%s", tmp->bname);
+    }
+
+    /* now delete the list head */
+    printf("deleting head %shead->prev: %s", head->bname, head->prev->bname);
+    DL_DELETE(head,head);
+    DL_FOREACH(head,tmp) {
+        printf("%s", tmp->bname);
+    }
+
+    fclose(file);
+
+    return 0;
+}