https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109548
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |dmalcolm at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
David possibly has inputs on how this should be done so the analyzer can do
this kind of diagnostic. Generally I'd say we want sth like
T * __attribute__ ((return_lifetime(1))) foo (U *p, ...);
where we specify the lifetime of the returned referenced object to be
the same as a referenced object in the argument list? So yes, the
[[gnu::lifetime(this)]] attribution would maybe do that but can
the attribute refer to another explicitely named argument as well?
Btw, is there an API to std::move the (possibly) allocated string out of
the std::string and make it available as C string pointer?
