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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /stdio/bug5.c
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initial import
Diffstat (limited to 'stdio/bug5.c')
-rw-r--r--stdio/bug5.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/stdio/bug5.c b/stdio/bug5.c
new file mode 100644
index 0000000..218af31
--- /dev/null
+++ b/stdio/bug5.c
@@ -0,0 +1,60 @@
+/* If stdio is working correctly, after this is run infile and outfile
+ will have the same contents. If the bug (found in GNU C library 0.3)
+ exhibits itself, outfile will be missing the 2nd through 1023rd
+ characters. */
+
+#include <ansidecl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+static char buf[8192];
+
+int
+DEFUN_VOID(main)
+{
+ FILE *in;
+ FILE *out;
+ static char inname[] = "infile";
+ static char outname[] = "outfile";
+ int i;
+
+ /* Create a test file. */
+ in = fopen (inname, "w+");
+ if (in == NULL)
+ {
+ perror (inname);
+ return 1;
+ }
+ for (i = 0; i < 1000; ++i)
+ fprintf (in, "%d\n", i);
+
+ out = fopen (outname, "w");
+ if (out == NULL)
+ {
+ perror (outname);
+ return 1;
+ }
+ if (fseek (in, 0L, SEEK_SET) != 0)
+ abort ();
+ putc (getc (in), out);
+ i = fread (buf, 1, sizeof (buf), in);
+ if (i == 0)
+ {
+ perror ("fread");
+ return 1;
+ }
+ if (fwrite (buf, 1, i, out) != i)
+ {
+ perror ("fwrite");
+ return 1;
+ }
+ fclose (in);
+ fclose (out);
+
+ puts ("There should be no further output from this test.");
+ fflush (stdout);
+ execlp ("cmp", "cmp", inname, outname, (char *) NULL);
+ perror ("execlp: cmp");
+ exit (1);
+}