https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68301
Bug ID: 68301
Summary: self-dependent reference member initialization not
diagnosed
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: msebor at gcc dot gnu.org
Target Milestone: ---
While verifying that bug 68208 has been fixed (it has been), I noticed that
other, slightly more involved cases of reference members than the trivial
"m(m)" in the bug are not diagnosed. For example, the following program which
is diagnosed by Clang as shown is accepted by GCC without a warning even with
-Wall and -Wextra.
cat u.cpp && /build/llvm-trunk/bin/clang++ -S -Wall -o/dev/null u.cppstruct S
{
const int &r1, &r2;
S ():
r1 (r2),
r2 (r1)
{ }
};
u.cpp:5:9: warning: reference 'r2' is not yet bound to a value when used here
[-Wuninitialized]
r1 (r2),
^
1 warning generated.
