In C, are const variables guaranteed to be distinct in memory?

Speaking of string literals, the C99 standard says (6.4.5.6):

It is unspecified whether these arrays are distinct provided their elements have the appropriate values. If the program attempts to modify such an array, the behavior is undefined.

I couldn't find either a similar warning or an explicit guarantee for const variables. Can the expression &x == &y in the context const int x=12; const int y=12; evaluate to 1? What about a const variable and a string literal (i.e. is &x == "\014\000\000" guaranteed to be 0 even on a 32-bit little-endian platform)?

For what it's worth, the section "String literals" in this blog post gives the context of the question.