#3020 Internal error when converting pointer to member to unsigned char *

[Gabriel Ravier]

struct s
{
        int name;
};

unsigned char *x = ((unsigned char *)&((struct s *)0)->name);

With sdcc test.c, this results in Internal error: validateOpTypeConst failed in OP_VALUE(op) @ SDCCicode.c:1226: expected value, got symbol. Tested with commit 11647.

[Philipp Klaus Krause]

This works for me as of [r13827]. I suspect my fix for [bugs:#2983] covers this case, too.