61 lines
1.2 KiB
C
61 lines
1.2 KiB
C
/* If stdio is working correctly, after this is run infile and outfile
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will have the same contents. If the bug (found in GNU C library 0.3)
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exhibits itself, outfile will be missing the 2nd through 1023rd
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characters. */
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#include <ansidecl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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static char buf[8192];
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int
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DEFUN_VOID(main)
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{
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FILE *in;
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FILE *out;
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static char inname[] = "infile";
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static char outname[] = "outfile";
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int i;
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/* Create a test file. */
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in = fopen (inname, "w+");
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if (in == NULL)
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{
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perror (inname);
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return 1;
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}
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for (i = 0; i < 1000; ++i)
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fprintf (in, "%d\n", i);
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out = fopen (outname, "w");
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if (out == NULL)
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{
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perror (outname);
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return 1;
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}
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if (fseek (in, 0L, SEEK_SET) != 0)
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abort ();
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putc (getc (in), out);
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i = fread (buf, 1, sizeof (buf), in);
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if (i == 0)
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{
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perror ("fread");
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return 1;
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}
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if (fwrite (buf, 1, i, out) != i)
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{
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perror ("fwrite");
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return 1;
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}
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fclose (in);
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fclose (out);
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puts ("There should be no further output from this test.");
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fflush (stdout);
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execlp ("cmp", "cmp", inname, outname, (char *) NULL);
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perror ("execlp: cmp");
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exit (1);
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}
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