[Bug c++/57528] New: Missed warning for putting reference to temporary in class member
jewillco at osl dot iu.edu
gcc-bugzilla@gcc.gnu.org
Tue Jun 4 18:07:00 GMT 2013
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57528
Bug ID: 57528
Summary: Missed warning for putting reference to temporary in
class member
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: jewillco at osl dot iu.edu
It would be nice to have a warning on code such as:
struct b {
const int& r;
b(int r): r(r) {}
};
that is almost certainly unintended since it always binds a reference to a
temporary in a case where the reference outlives the temporary. "g++ (GCC)
4.9.0 20130519 (experimental)" does not warn on this code with -Wall -Wextra,
whether with -O2 or without. Uses of the struct b (including with a literal
number as constructor argument) do not produce warnings either.
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