Extended Description

Consider this simple testcase:

extern "C" { int printf(const char *format, ...); };

struct Test {
Test() : i(10) {}
Test(int i) : i(i) {}
int i;
private:
int j;
};

int main() {
Test partial[3] = { 1 };
printf("%d %d %d\n", partial[0].i, partial[1].i, partial[2].i);

Test empty[3] = {};
printf("%d %d %d\n", empty[0].i, empty[1].i, empty[2].i);

}

This is a regression; as of r129729 it worked. The program should print "1 10 10" "10 10 10". It currently prints "1 10 10" "0 0 0".

If you shrink the array down to 2 members, the bug goes away. If you remove private members, the bug goes away.