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38 lines
849 B
38 lines
849 B
/**
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* :author: Dan Buch (daniel.buch@gmail.com)
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*/
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#include <stdio.h>
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void duff(register char *to, register char *from, register int count)
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{
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register int n = (count + 7) / 8;
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switch (count % 8) {
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case 0: do { *to++ = *from++;
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case 7: *to++ = *from++;
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case 6: *to++ = *from++;
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case 5: *to++ = *from++;
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case 4: *to++ = *from++;
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case 3: *to++ = *from++;
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case 2: *to++ = *from++;
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case 1: *to++ = *from++;
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} while (--n > 0);
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}
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}
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int main()
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{
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char * to = "dogs cats babies";
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char * from = "monkey hat pants";
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int i = 16;
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printf("to = %s\n", to);
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printf("from = %s\n", from);
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/* And here comes the segfault... */
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duff(to, from, i);
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printf("to = %s\n", to);
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printf("from = %s\n", from);
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}
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/* vim:filetype=c:fileencoding=utf-8
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*/
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