https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64667
Bug ID: 64667
Summary: -Winit-self ignored for reference fields
Product: gcc
Version: 4.9.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: gnu at drewnoakes dot com
GCC doesn't warn when initialising a field of reference type from itself in a
copy constructor.
Consider:
class A
{
public:
A(const A&) : a(a), b(b), c(c) {}
private:
int a;
int* b;
int& c;
};
Warnings are offered for field a and b, but not c.
$ g++ -std=c++11 -Winit-self test.cc
test.cc: In copy constructor ‘A::A(const A&)’:
test.cc:4:8: warning: ‘A::a’ is initialized with itself [-Winit-self]
A(const A&) : a(a), b(b), c(c) {}
^
test.cc:4:8: warning: ‘A::b’ is initialized with itself [-Winit-self]
Testing this with clang does trigger a warning, though with a different message
for c than a and b.
