string literal assignment

Can string literals be used for assignment other than in an initializer?

Code:

---

int main( void ) {
char *p = "foo";
p = "bar";
}

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(disregarding the loss of static storage) even with -Wall, this compiles with no warnings/error; though I could have sworn I had read somewhere in 9899 they could be used for initialization only...

It depends. This code assigns the address of a string literal to a pointer (which really should be const char*), so it is fine.
However, trying to assign a string literal to a buffer, eg:
char foo[] = "Hello World!";
This can only be done with initialization.