Re: gdb, libio, readline

[Roland McGrath]

> What is this "sizeof (MACH_MSG_TYPE_INTEGER_T)"?  MACH_MSG_TYPE_INTEGER_T is
> just a macro defining a number:
> #define       MACH_MSG_TYPE_INTEGER_T MACH_MSG_TYPE_INTEGER_32
> 
> It doesn't seem to make sense to use the sizeof operator on this value.

Oops.  That is certainly a bug, but it turns out to be a harmless one.  In
fact, sizeof (12345) == 4; that's because the constant has type int, and
sizeof an expression is valid to mean the size of that expression's type.