2005-01-05 Ulrich Drepper <drepper@redhat.com>
+ * libio/fmemopen.c (fmemopen_seek): SEEK_END should count from
+ maximum used address, not maximum buffer position.
+
* libio/iofopncook.c (_IO_cookie_seekoff): Define. Mark offset as
invalid to disable optimizations in fileops which won't work here.
(_IO_cookie_jumps): Use it.
--- /dev/null
+#include <assert.h>
+#include <stdio.h>
+#include <sys/types.h>
+
+
+static int
+do_test (void)
+{
+ int result = 0;
+ char buf[100];
+ FILE *fp = fmemopen (buf, sizeof (buf), "w");
+ if (fp == NULL)
+ {
+ puts ("fmemopen failed");
+ return 0;
+ }
+ static const char str[] = "hello world";
+#define nstr (sizeof (str) - 1)
+ fputs (str, fp);
+ off_t o = ftello (fp);
+ if (o != nstr)
+ {
+ printf ("first ftello returned %ld, expected %zu\n", o, nstr);
+ result = 1;
+ }
+ rewind (fp);
+ o = ftello (fp);
+ if (o != 0)
+ {
+ printf ("second ftello returned %ld, expected %zu\n", o, 0);
+ result = 1;
+ }
+ if (fseeko (fp, 0, SEEK_END) != 0)
+ {
+ puts ("fseeko failed");
+ return 1;
+ }
+ o = ftello (fp);
+ if (o != nstr)
+ {
+ printf ("third ftello returned %ld, expected %zu\n", o, nstr);
+ result = 1;
+ }
+ rewind (fp);
+ static const char str2[] = "just hello";
+#define nstr2 (sizeof (str2) - 1)
+ assert (nstr2 < nstr);
+ fputs (str2, fp);
+ o = ftello (fp);
+ if (o != nstr2)
+ {
+ printf ("fourth ftello returned %ld, expected %zu\n", o, nstr2);
+ result = 1;
+ }
+ fclose (fp);
+ static const char str3[] = "just hellod";
+ if (strcmp (buf, str3) != 0)
+ {
+ printf ("final string is \"%s\", expected \"%s\"\n",
+ buf, str3);
+ result = 1;
+ }
+ return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"