----- Original Message -----
> http://en.wikipedia.org/wiki/Plain_Old_Data_Structures
>
>
> confirms that POD can't have a vptr :-)
Just because it's not POD in the language doesn't mean that it necessarily
requires a static initializer in all implementations:
class Interface {
public:
constexpr Interface() {}
virtual int f() = 0;
};
class Concrete : public Interface {
public:
constexpr Concrete() {}
virtual int f();
};
Concrete c;
run through |g++ -std=c++0x -O2 -o - -S| (gcc 4.6, x86-64) gives:
.file "vtables.cpp"
.globl c
.data
.align 8
.type c, @object
.size c, 8
c:
.quad _ZTV8Concrete+16
No initialization code in sight. clang does the same, with or without the
constexpr.
-Nathan
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