cparser aborts on passing non-lvalue to asm

[GabrielRavier]

void f(int i)
{
    asm("" : : "m"(++i));
}

cparser outputs this :

src/firm/ast2firm.c:2344: panic in expression_to_addr: trying to get address of non-lvalue
Aborted (core dumped)

Obviously there is still a error in this code, but a panic like this kind of lacks information