https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82919
Martin Sebor <msebor at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |documentation Status|UNCONFIRMED |NEW Last reconfirmed| |2017-11-09 CC| |msebor at gcc dot gnu.org Ever confirmed|0 |1 Known to fail| |5.4.0, 6.4.0, 7.2.0, 8.0 --- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> --- Confirmed with the top of trunk (GCC 8.0) back through to GCC 5.4. $ cat c.c && gcc -S c.c f (void) { g (); } c.c:1:1: warning: return type defaults to ‘int’ [-Wimplicit-int] f (void) ^ c.c: In function ‘f’: c.c:3:3: warning: implicit declaration of function ‘g’ [-Wimplicit-function-declaration] g (); ^