70 lines
1.4 KiB
C
70 lines
1.4 KiB
C
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/* 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 <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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main (void)
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{
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FILE *in;
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FILE *out;
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static char inname[] = OBJPFX "bug5test.in";
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static char outname[] = OBJPFX "bug5test.out";
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char *printbuf;
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size_t i;
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int result;
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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, "%Zu\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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/* We must remove this entry to assure the `cmp' binary does not use
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the perhaps incompatible new shared libraries. */
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unsetenv ("LD_LIBRARY_PATH");
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asprintf (&printbuf, "cmp %s %s", inname, outname);
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result = system (printbuf);
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remove (inname);
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remove (outname);
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exit ((result != 0));
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}
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