https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81275
--- Comment #13 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Tom de Vries from comment #12)
> (In reply to Dmitry G. Dyachenko from comment #0)
> > -fsanitize={address,undefined} unaffected
>
> FWIW, I've run into this with -fsanitize=address and gcc 7.3 (minimized from
> gdb/gdbtypes.c):
> ...
> $ cat test.c
> struct i
> {
> unsigned int i;
> };
> typedef struct i si;
> extern const si const1;
> extern const si const2;
>
> si
> foo (int c, int d)
> {
> si var = { 0 };
>
> switch (c)
> {
> case 1:
> switch (d)
> {
> case 2:
> return var;
> default:
> return const1;
> }
> break;
> default:
> return const2;
> }
> }
> $ g++-7 -O0 test.c -c -Wreturn-type -fsanitize=address
> test.c: In function ‘si foo(int, int)’:
> test.c:28:1: warning: control reaches end of non-void function
> [-Wreturn-type]
> }
> ^
> $ g++-7 -O0 test.c -c -Wreturn-type
> $
> ...
Confirmed and fixed on trunk by my commit r254437, so please use a newer GCC.
