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#include <assert.h>
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#include <stdio.h>
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int main() {
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int i = 0xffff;
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asm("movl $23, %0"
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: "=r" (i) /* output */
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/* : no input */
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/* : no clobbered */
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);
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printf("i = %d\n", i);
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assert(i == 23);
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return 0;
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}
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