Steffen Dettmer <steffen.dettmer@xxxxxxxxxxxxxx> writes: > You cannot have const members with runtime data. > As I understand it, the "small old" compilers may locate > const data into ROM (or other RO memory), which makes it > impossible to initialize it with runtime data, so again the > problem may not be the compiler language / version, but > properties of the equipment. If you want your code to be runable > on such systems, you cannot use it. In C89 or C99, a variable declared as const can not be modified after it is created. Any initializer of such a variable may contain only const expressions. So such a variable may be placed in read-only memory, and gcc will in fact normally do so. (There are some cases where this can not be done when using -fpic). C++ is more complicated, due to constructors and the mutable storage class specifier. Ian
