[Bug c++/114909] New: False positive diagnostic from -Wdangling-reference

[oleg at smolsky dot net via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114909

            Bug ID: 114909
           Summary: False positive diagnostic from -Wdangling-reference
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: oleg at smolsky dot net
  Target Milestone: ---

struct string {
    string(const char *);
};

struct Json {
    int size() const;
};

const Json &fn1(const Json &obj, const string &key);

int Test1(const Json &arg)
{
    // warning: possibly dangling reference to a temporary
[-Wdangling-reference]
    const Json &jv = fn1(arg, "something"); 
    return jv.size();
}

const Json &fn2(const Json &obj);

int Test2(const Json &arg)
{
    // all good
    const Json &jv = fn2(arg);
    return jv.size();
}