Test for results of __freading and __fwriting immediately after fopen.
authordrepper <drepper>
Sat, 13 Oct 2007 07:32:39 +0000 (07:32 +0000)
committerdrepper <drepper>
Sat, 13 Oct 2007 07:32:39 +0000 (07:32 +0000)
libio/tst-ext2.c [new file with mode: 0644]

diff --git a/libio/tst-ext2.c b/libio/tst-ext2.c
new file mode 100644 (file)
index 0000000..ed72efa
--- /dev/null
@@ -0,0 +1,58 @@
+#include <stdio.h>
+#include <stdio_ext.h>
+
+
+static char *fname;
+
+#define PREPARE(argc, argv) \
+  do {                                                                 \
+    int fd = create_temp_file ("tst-ext2", &fname);                    \
+    if (fd == -1)                                                      \
+      {                                                                        \
+       puts ("cannot create temporary file");                          \
+       exit (1);                                                       \
+      }                                                                        \
+    close (fd);                                                                \
+  } while (0)
+
+
+static int
+do_test (void)
+{
+  int res = 0;
+
+  FILE *fp;
+
+  fp = fopen (fname, "w");
+  printf ("Initial state for write-only stream: %d %d\n",
+          __freading (fp) != 0, __fwriting (fp) != 0);
+  res |= ((__freading (fp) != 0) != 0
+         || (__fwriting (fp) != 0) != 1);
+  fclose (fp);
+
+  fp = fopen (fname, "r");
+  printf ("Initial state for read-only stream:  %d %d\n",
+          __freading (fp) != 0, __fwriting (fp) != 0);
+  res |= ((__freading (fp) != 0) != 1
+         || (__fwriting (fp) != 0) != 0);
+  fclose (fp);
+
+  fp = fopen (fname, "r+");
+  printf ("Initial state for read-write stream: %d %d\n",
+          __freading (fp) != 0, __fwriting (fp) != 0);
+  res |= ((__freading (fp) != 0) != 0
+         || (__fwriting (fp) != 0) != 0);
+  fclose (fp);
+
+  fp = fopen (fname, "w+");
+  printf ("Initial state for read-write stream: %d %d\n",
+          __freading (fp) != 0, __fwriting (fp) != 0);
+  res |= ((__freading (fp) != 0) != 0
+         || (__fwriting (fp) != 0) != 0);
+  fclose (fp);
+
+  return res;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"