Question on the C99 standard

I have this old fixed idea, probably acquired in the dawn ages of K&R, that something like
   char *str = "123";
   *str = '0';
is OK and will set *str to "023".  

Clearly I am wrong, but I can't find anything in the C99 standard that says so.  

I am aware that
   char str[] = "123";
   *str = '0';
works fine.

Given that pointer notation and array notation are two syntactic ways of performing the same semantic tasks,
why is one treated as a pointer to a const literal and the other treated as modifiable data?

I've looked in the C99 standard, but haven't found a good reference.

Have you one?
Start Free Trial