include/linux/signal.h: mark expected switch fall-throughs (3819ddec) · Commits · 戴 / test

In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Link: http://lkml.kernel.org/r/20181013114847.GA3160@embeddedor.com Signed-off-by:

Michael Ellerman <mpe@ellerman.id.au> Cc: Oleg Nesterov <oleg@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by:

include/linux/signal.h

+6 −0

Original line number	Diff line number	Diff line
		@@ -129,9 +129,11 @@ static inline void name(sigset_t r, const sigset_t a, const sigset_t *b) \
		b3 = b->sig[3]; b2 = b->sig[2]; \
		r->sig[3] = op(a3, b3); \
		r->sig[2] = op(a2, b2); \
		/* fall through */ \
		case 2: \
		a1 = a->sig[1]; b1 = b->sig[1]; \
		r->sig[1] = op(a1, b1); \
		/* fall through */ \
		case 1: \
		a0 = a->sig[0]; b0 = b->sig[0]; \
		r->sig[0] = op(a0, b0); \
		@@ -161,7 +163,9 @@ static inline void name(sigset_t *set) \
		switch (_NSIG_WORDS) { \
		case 4: set->sig[3] = op(set->sig[3]); \
		set->sig[2] = op(set->sig[2]); \
		/* fall through */ \
		case 2: set->sig[1] = op(set->sig[1]); \
		/* fall through */ \
		case 1: set->sig[0] = op(set->sig[0]); \
		break; \
		default: \
		@@ -182,6 +186,7 @@ static inline void sigemptyset(sigset_t *set)
		memset(set, 0, sizeof(sigset_t));
		break;
		case 2: set->sig[1] = 0;
		/* fall through */
		case 1: set->sig[0] = 0;
		break;
		}
		@@ -194,6 +199,7 @@ static inline void sigfillset(sigset_t *set)
		memset(set, -1, sizeof(sigset_t));
		break;
		case 2: set->sig[1] = -1;
		/* fall through */
		case 1: set->sig[0] = -1;
		break;
		}