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authorUlrich Drepper <drepper@redhat.com>2002-07-24 10:44:53 +0000
committerUlrich Drepper <drepper@redhat.com>2002-07-24 10:44:53 +0000
commit405550bf78acc8ce8885e4b30986035533d08267 (patch)
tree3da05c874d6fc47194f7bf47d1ad3a117e314406 /libio/bug-fseek.c
parente155c80135043ce7582a5cb8623142c8ca14cbe5 (diff)
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Update.
2002-07-24 Ulrich Drepper <drepper@redhat.com> * locale/hashval.h: Make more self-containedby defining LONG_BITS. * locale/programs/simple-hash.c: Remove LONG_BITS definition. * locale/programs/locarchive.c (add_locale_to_archive): Correct test to detect duplicate locales. * libio/fileops.c (_IO_new_file_seekoff): Fail if relative position would be before beginning of file. (_IO_file_seekoff_mmap): Likewise. * libio/Makefile (tests): Add bug-fseek. * libio/bug-fseek.c: New file. * intl/explodename.c: Remove support for CEN-style locale variables. It was never used and shouldn't be since it's not portable. * intl/finddomain.c: Likewise. * intl/l10nflist.c: Likewise. * intl/loadinfo.h: Likewise. * locale/findlocale.c: Likewise.
Diffstat (limited to 'libio/bug-fseek.c')
-rw-r--r--libio/bug-fseek.c94
1 files changed, 94 insertions, 0 deletions
diff --git a/libio/bug-fseek.c b/libio/bug-fseek.c
new file mode 100644
index 0000000000..d8cd712f6a
--- /dev/null
+++ b/libio/bug-fseek.c
@@ -0,0 +1,94 @@
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+
+static char *fname;
+
+
+static void do_prepare (void);
+#define PREPARE(argc, argv) do_prepare ()
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+#include <test-skeleton.c>
+
+
+static void
+do_prepare (void)
+{
+ static const char pattern[] = "12345678901234567890";
+ int fd = create_temp_file ("bug-fseek.", &fname);
+ if (fd == -1)
+ {
+ printf ("cannot create temporary file: %m\n");
+ exit (1);
+ }
+
+ if (write (fd, pattern, sizeof (pattern)) != sizeof (pattern))
+ {
+ perror ("short write");
+ abort ();
+ }
+ close (fd);
+}
+
+
+
+static int
+do_test (void)
+{
+ FILE *f;
+ int result = 0;
+ char buf[10];
+
+
+ if ((f = fopen (fname, "r")) == (FILE *) NULL)
+ {
+ perror ("fopen(\"r\")");
+ }
+
+ fread (buf, 3, 1, f);
+ errno = 0;
+ if (fseek (f, -10, SEEK_CUR) == 0)
+ {
+ printf ("fseek() for r to before start of file worked!\n");
+ result = 1;
+ }
+ else if (errno != EINVAL)
+ {
+ printf ("\
+fseek() for r to before start of file did not set errno to EINVAL. \
+Got %d instead\n",
+ errno);
+ result = 1;
+ }
+
+ fclose (f);
+
+
+ if ((f = fopen (fname, "r+")) == (FILE *) NULL)
+ {
+ perror ("fopen(\"r+\")");
+ }
+
+ fread (buf, 3, 1, f);
+ errno = 0;
+ if (fseek (f, -10, SEEK_CUR) == 0)
+ {
+ printf ("fseek() for r+ to before start of file worked!\n");
+ result = 1;
+ }
+ else if (errno != EINVAL)
+ {
+ printf ("\
+fseek() for r+ to before start of file did not set errno to EINVAL. \
+Got %d instead\n",
+ errno);
+ result = 1;
+ }
+
+ fclose (f);
+
+ return result;
+}