From: mordor.nospam@fly.srk.fer.hr   
      
   On 2013-02-10, woyt.a  wrote:   
      
   > can change value of val0 const variable but invokes segmentation fault   
   > for val1.  This is known issue, as val1 is put in the read-only memory   
   > page.   
   >   
   > My question is:   
   > 1. is there any way to change static cont variable value?   
      
   You can use platform-specific API to change permissions on the relevant   
   memory page. (e.g., mprotect)   
      
   > 2. is there any way to prevent compiler to put that variable in   
   > read-only memory?   
      
   Sure, don't declare it as const.   
      
   You should read the compiler's documentation.  gcc has a section attribute   
   which directs the compiler to place it in a particular section.  Maybe it   
   also has an option that instructs it to place all const static variables in   
   writable storage.   
      
      
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