/* Test of freadahead() function.
- Copyright (C) 2007 Free Software Foundation, Inc.
+ Copyright (C) 2007-2008 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include <unistd.h>
#define ASSERT(expr) \
- do \
- { \
- if (!(expr)) \
- { \
+ do \
+ { \
+ if (!(expr)) \
+ { \
fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
- abort (); \
- } \
- } \
+ fflush (stderr); \
+ abort (); \
+ } \
+ } \
while (0)
int
else
{
if (lseek (0, 0, SEEK_CUR) == nbytes)
- /* An unbuffered stdio, such as BeOS or on uClibc compiled without
- __STDIO_BUFFERS. */
- ASSERT (freadahead (stdin) == 0);
+ /* An unbuffered stdio, such as BeOS or on uClibc compiled without
+ __STDIO_BUFFERS. */
+ ASSERT (freadahead (stdin) == 0);
else
- /* Normal buffered stdio. */
- ASSERT (freadahead (stdin) != 0);
+ {
+ /* Normal buffered stdio. */
+ size_t buffered;
+ int c, c2;
+
+ ASSERT (freadahead (stdin) != 0);
+ buffered = freadahead (stdin);
+
+ c = fgetc (stdin);
+ ASSERT (freadahead (stdin) == buffered - 1);
+ ungetc (c, stdin);
+ ASSERT (freadahead (stdin) == buffered);
+ c2 = fgetc (stdin);
+ ASSERT (c2 == c);
+ ASSERT (freadahead (stdin) == buffered - 1);
+
+ c = '@';
+ ungetc (c, stdin);
+ ASSERT (freadahead (stdin) == buffered);
+ c2 = fgetc (stdin);
+ ASSERT (c2 == c);
+ ASSERT (freadahead (stdin) == buffered - 1);
+ }
}
return 0;