More tests for negative seeks, prodded by matthew@

1 files changed, 40 insertions, 1 deletions

diff --git a/src/regress/lib/libc/fmemopen/fmemopentest.c b/src/regress/lib/libc/fmemopen/fmemopentest.c
index 57063aeb0a..203c93be65 100644
--- a/src/regress/lib/libc/fmemopen/fmemopentest.c
+++ b/src/regress/lib/libc/fmemopen/fmemopentest.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: fmemopentest.c,v 1.2 2013/03/27 15:08:13 mpi Exp $ */
+/*      $OpenBSD: fmemopentest.c,v 1.3 2013/03/28 09:35:58 mpi Exp $ */
 
 /*
  * Copyright (c) 2011 Martin Pieuchot <mpi@openbsd.org>
@@ -161,6 +161,44 @@ writetest(void)
 }
 
 int
+seektest(void)
+{
+        FILE    *s1;
+        char     string[] = "long string for testing seek";
+        size_t   len, slen;
+        int      failures = 0;
+
+        slen = strlen(string) + 1;
+
+        s1 = fmemopen(string, slen, "r");
+        if (s1 == NULL)
+                return (1);
+
+        if (fseek(s1, 8, SEEK_SET) != 0) {
+                warnx("failed to fseek. (14)");
+                failures++;
+        }
+
+        if (ftell(s1) != 8) {
+                warnx("failed seek test. (15)");
+                failures++;
+        }
+
+        /* Try to seek backward */
+        if (fseek(s1, -1, SEEK_CUR) != 0) {
+                warnx("failed to fseek. (16)");
+                failures++;
+        }
+
+        if (ftell(s1) != 7) {
+                warnx("failed seeking backward. (17)");
+                failures++;
+        }
+
+        return (failures);
+}
+
+int
 main(void)
 {
         int      failures = 0;
@@ -168,6 +206,7 @@ main(void)
         failures += simpletest();
         failures += updatetest();
         failures += writetest();
+        failures += seektest();
 
         return (failures);
 }