UPDATE. Well actually my previous assumption is wrong and the problem occurs because one type is pointer const vs other pointer data const.
I stumbled on some interesting problem today:
typedef char *MY_KEY; void foo (const MY_KEY key) { // ... } int main (...) { const char *str = "some str"; foo (str); // error: smth like unable to convert LPCSTR (const char*) to char* } |
Weird isn’t it? From first glance everything looks alright and I really didn’t understood why it was not working. After some googling I find out what is going on. Problem is that qualifier (const or others) applies at the very top level, in my situation once I typedef type with pointer qualifier can not be injected between type and a pointer. Here what is happening:
typedef char *MY_KEY; void foo (const MY_KEY key) -> equals to -> void foo (const (char *) key) |
Now to avoid this situation typedef should be done without pointer, like this:
typedef char MY_KEY; void foo (const MY_KEY *key) { // ... } int main (...) { const char *str = "some str"; foo (str); // and it works as it should } |
