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int foo(int op)
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{
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switch (op)
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{
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case 1: {
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do_something();
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return 0;
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}
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case 2:
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do_something_else();
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return 1;
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case 3:
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case 4:
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/* don't do anything */
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break;
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case 5:
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return 3;
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default:
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break;
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}
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return -1;
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}
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