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a84dcb4bdf
With fortification enabled, fread calls return result needs to be checked, has it gets the __wur macro enabled. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
51 lines
908 B
C
51 lines
908 B
C
#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <support/xstdio.h>
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int stdio_block_read = 1, stdio_block_write = 1;
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int
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main (int argc, char *argv[])
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{
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FILE *f;
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int i;
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char buffer[31];
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const char filename[] = OBJPFX "bug4.test";
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while ((i = getopt (argc, argv, "rw")) != -1)
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switch (i)
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{
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case 'r':
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stdio_block_read = 0;
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break;
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case 'w':
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stdio_block_write = 0;
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break;
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}
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f = fopen (filename, "w+");
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for (i = 0; i < 9000; ++i)
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putc('x', f);
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fseek (f, 8180L, 0);
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fwrite ("Where does this text come from?", 1, 31, f);
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fseek (f, 8180L, 0);
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xfread (buffer, 1, 31, f);
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fwrite (buffer, 1, 31, stdout);
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fclose (f);
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remove (filename);
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if (!memcmp (buffer, "Where does this text come from?", 31))
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{
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puts ("\nTest succeeded.");
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return 0;
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}
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else
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{
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puts ("\nTest FAILED!");
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return 1;
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}
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}
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