http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60297
Bug ID: 60297
Summary: Temporary lifetime not extended by reference bound to
POD member
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: potswa at mac dot com
The resolution to DR 1651 seems inconsistently applied. This program should
print "check" before "destroy", but if the reference is bound to member "i"
instead of "np" the lifetime is not extended.
#include <iostream>
struct notpod {
~notpod() {}
};
struct noisy {
~noisy() { std::cout << "destroy\n"; }
};
struct cont {
noisy o;
notpod np;
int i;
};
int main() {
{
notpod && q = cont().np;
std::cout << "check\n";
} // cont::~cont here
{
int && i = cont().i;
// cont::~cont here; i is dangling.
std::cout << "check\n";
}
}
The problem may be broader than DR 1651 because the results are the same if
"const &" is substituted for "&&".
(Note, I submitted a trivial, somewhat similar bug yesterday but this issue is
completely unrelated, and it's "for real.")
