[Bug libstdc++/19544] Difference in behaviour if default constructor added

["gdr at integrable-solutions dot net" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From gdr at integrable-solutions dot net  2005-01-20 19:19 -------
Subject: Re:  New: Difference in behaviour if default constructor added

"chris at bubblescope dot net" <gcc-bugzilla@gcc.gnu.org> writes:

| While looking at PR 19510, I noticed the following strangeness.
| 
| Consider:
| --
| #include<vector>
| struct ptr
| {
| int* a;
| ptr() {}
| };
| std::vector<ptr> v(1);
| --
| At -O3 -Wall
| This code produces the error message:
| ...../include/c++/4.0.0/bits/stl_construct.h: In function 'void
| __static_initialization_and_destruction_0(int,int)':
| ...../include/c++/4.0.0/bits/stl_construct.h:81: warning: 'SR.186' is used
| uninitalized in this function
| 
| This warning is not generated if I declare ptr without a default constructor,
| although 12.1/7 seems to imply that the default generated constructor should be
| exactly what I have written down.

This is a bug in your code.  Can you explain me why it is suddenly a
bug in the library?

-- Gaby


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19544