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case({a,b,c}) 4'b1100: o = a; .. .. endcaseDuring elaboration, the case expression will be padded with 1'b0 to match the size of the case item expression. Thus, the most-significant bit of the case expression (0) does not match the most-significant bit of the case item expression (1).
ACTION: No action is required. To avoid receiving this message in the future, remove case item expressions that never match your case expression.
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