https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114909
Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mpolacek at gcc dot gnu.org --- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> --- fn1 returns a reference and takes a temporary as an argument; we can't prove that it doesn't return a reference to the temporary, so we warn. Please add [[gnu::no_dangling]] to fn1 to suppress the warning.