closein: correct comments

[gnulib.git] / tests / test-perror2.c

diff --git a/tests/test-perror2.c b/tests/test-perror2.c
index dfcabb4..e230f92 100644 (file)
--- a/tests/test-perror2.c
+++ b/tests/test-perror2.c
@@ -37,8 +37,6 @@ static FILE *myerr;
 int
 main (void)
 {
-  FILE *fp;
-
   /* We change fd 2 later, so save it in fd 10.  */
   if (dup2 (STDERR_FILENO, BACKUP_STDERR_FILENO) != BACKUP_STDERR_FILENO
       || (myerr = fdopen (BACKUP_STDERR_FILENO, "w")) == NULL)
@@ -86,17 +84,46 @@ main (void)
     ASSERT (msg2 == msg4 || STREQ (msg2, str2));
     ASSERT (msg3 == msg4 || STREQ (msg3, str3));
     ASSERT (STREQ (msg4, str4));
+
+    free (str1);
+    free (str2);
+    free (str3);
+    free (str4);
+  }
+
+  /* Test that perror uses the same message as strerror.  */
+  {
+    int errs[] = { EACCES, 0, -3, };
+    int i;
+    for (i = 0; i < SIZEOF (errs); i++)
+      {
+        char buf[256];
+        char *err = strerror (errs[i]);
+
+        ASSERT (err);
+        ASSERT (strlen (err) < sizeof buf);
+        rewind (stderr);
+        ASSERT (ftruncate (fileno (stderr), 0) == 0);
+        errno = errs[i];
+        perror (NULL);
+        ASSERT (!ferror (stderr));
+        rewind (stderr);
+        ASSERT (fgets (buf, sizeof buf, stderr) == buf);
+        ASSERT (strstr (buf, err));
+      }
   }
 
   /* Test that perror reports write failure.  */
   {
     ASSERT (freopen (BASE ".tmp", "r", stderr) == stderr);
-    ASSERT (setvbuf (stderr, NULL, _IOLBF, BUFSIZ) == 0);
+    ASSERT (setvbuf (stderr, NULL, _IONBF, BUFSIZ) == 0);
     errno = -1;
     ASSERT (!ferror (stderr));
     perror (NULL);
-    ASSERT (errno > 0);
 #if 0
+    /* Commented out until cygwin behaves:
+       http://sourceware.org/ml/newlib/2011/msg00228.html */
+    ASSERT (errno > 0);
     /* Commented out until glibc behaves:
        http://sourceware.org/bugzilla/show_bug.cgi?id=12792 */
     ASSERT (ferror (stderr));