https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61597
--- Comment #19 from Marc Glisse <glisse at gcc dot gnu.org> --- (In reply to Manuel López-Ibáñez from comment #18) > (In reply to Marc Glisse from comment #17) > > And if func is inline, > > it will require -fkeep-inline-functions. > > What is the difference between inline/not inline? After being inlined and becoming unused, a static or inline function is discarded (doesn't exist anymore in the pass that warns), while a regular function still needs to be emitted and is kept. The function in which it was inlined probably has a use of a dead variable, but warning for that is harder, as discussed in PR 60517 (I don't think we need to keep both open). > > e.cc: In function 'Iter& func(Iter, int)': > > e.cc:11:20: warning: function returns address of local variable > > [-Wreturn-local-addr] > > return iter += n; > > ^ > > Why it points to n? I am calling warning_at with gimple_location (return_stmt).
