I need to enforce a certain initialization and deinitialization order
of static variables in GCC, even between different translation units.
There is an extension called init_priority, which initializes my
variable first, but its deinitialization order is weird:
----------------------------8<------------------------------
#include <stdio.h>
struct A {
A() {
printf("A()\n");
}
~A() {
printf("~A()\n");
}
};
struct B {
B() {
printf("B()\n");
}
~B() {
printf("~B()\n");
}
};
struct C {
C() {
printf("C()\n");
}
~C() {
printf("~C()\n");
}
};
struct D {
D() {
printf("D()\n");
}
~D() {
printf("~D()\n");
}
};
static A a;
static B b;
static C c __attribute__((init_priority(101)));
static D d;
int main(int argc, char *argv[])
{
return 0;
}
----------------------------8<------------------------------
It produces:
C()
A()
B()
D()
~C() <= deinitialization order error
~D()
~B()
~A()
But I expect:
C()
A()
B()
D()
~D()
~B()
~A()
~C()
Why isn't c destroyed at the very end? Is it a bug or a correct behaviour?
I don't see anything like attribute(deinit_priority), so how can I obtain
the
latter deinitialization order (nifty counters etc. are not allowed, because
third-party libraries do not include them)?
Best reagrds
Piotr Wyderski
