30 lines
459 B
Coq
30 lines
459 B
Coq
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/*
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* 1364-2001 19.3.2 "An undefined text macro has no value, just as if it had
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* never been defined."
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*/
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`define a 1
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`ifdef a
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`define b 1
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`else
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`define b 0
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`endif
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`undef a
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`ifdef a
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`define c 1
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`else
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`define c 0
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`endif
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module test;
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initial begin
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if(`a+1 !== 1) begin $display("FAIL"); $finish; end
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if(`b+1 === 1) begin $display("FAIL"); $finish; end
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if(`c+1 !== 1) begin $display("FAIL"); $finish; end
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$display("PASSED");
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end
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endmodule
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