https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63606
Bug ID: 63606 Summary: Missing a warning for binding a reference member to a stack allocated parameter Product: gcc Version: 4.8.2 Status: UNCONFIRMED Severity: enhancement Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: bcmpinc at hotmail dot com The code below should produce a warning, as it binds a stack allocated parameter to a reference member. However, gcc currently does not produce such a warning. The code is error prone as it will always result in a dangling reference: the object being pointed to is destructed when the constructor returns. Similar buggy code can accidentally be written when one forgets to insert the '&' to pass-by-reference. Note that the clang compiler does emit a warning, named -Wdangling-field, for the code below. struct Bar { int a; }; struct Foo{ Foo(Bar arg) : bar(arg) {} Bar & bar; }; int main() { Bar k; Foo oops(k); return 0; }