https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62115
Roman Perepelitsa <roman.perepelitsa at gmail dot com> changed:
What |Removed |Added
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CC| |roman.perepelitsa at gmail dot
com
--- Comment #4 from Roman Perepelitsa <roman.perepelitsa at gmail dot com> ---
r216124 has also fixed another bug, which may result in valid code being
rejected and also in incorrect code generation for valid code.
#include <utility>
struct Base { int value; };
struct Derived : Base {};
void Foo(int&&) {}
int main() {
Derived d;
Foo(std::move(d).value);
}
Before r216124 this program produced the following compile error:
test.cc: In function 'int main()':
test.cc:10:25: error: cannot bind 'int' lvalue to 'int&&'
Foo(std::move(d).value);
^
test.cc:6:6: error: initializing argument 1 of 'void Foo(int&&)'
void Foo(int&&) {}
If function Foo() was overloaded for const int& and int&, or if it used perfect
forwarding, it would result in successful compilation and incorrect runtime
behaviour.
Would it be possible to backport the fix to gcc-4_9-branch?
