From: porkchop@invalid.foo   
      
   On Tue, 6 Jan 2026 13:59:20 +0100, highcrew wrote:   
      
   > On 1/6/26 1:32 PM, Michael Sanders wrote:   
   >>      “Evaluate *foo, but explicitly discard its value.”   
   >>   
   >>      It is a cast-to-void used to silence warnings about an   
   >>      unused expression or unused result.   
   >>   
   >> My question: Why?   
   >   
   > I'll throw a guess on the wall :)   
   >   
   > In C++ you might want to get side effect from some overloaded   
   > operator.  In C the only reason I could think of for for   
   > evaluating *foo and discarding the result would be if *foo   
   > was volatile, and in this way you are poking at some   
   > hardware-mapped address.   
      
   I can see that but... why not just declare as volatile in that case?   
      
   --   
   :wq   
   Mike Sanders   
      
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