From: ldo@nz.invalid   
      
   On Sat, 3 Jan 2026 17:24:54 -0800, Andrey Tarasevich wrote:   
      
   > The compiler on that embedded system is, of course, aware of the   
   > fact that address 0x00000000 is perfectly valid and should be left   
   > accessible. So, for that reason, the compiler is supposed to choose   
   > some other physical representation for null pointers ...   
      
   What if the entire machine address space is valid? Are C pointer types   
   supposed to add an extra “invalid” value on top of that?   
      
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