refactor: warn against implicit fallthrough
Enable the `-Wimplicit-fallthrough` warning, which will warn if `case`
statements in a `switch` block fall through to the next `case`.
Intentional fallthrough can be signalled with the `[[fallthrough]]`
attribute which was added in C23.
Change-Id: I421cacadafba6457847c3a067483c97fdd9896cf
Signed-off-by: Karl Meakin <karl.meakin@arm.com>
diff --git a/src/ffa/spmc/interrupts.c b/src/ffa/spmc/interrupts.c
index 70cded3..9110b6f 100644
--- a/src/ffa/spmc/interrupts.c
+++ b/src/ffa/spmc/interrupts.c
@@ -105,7 +105,7 @@
*/
break;
case ARM_EL1_VIRT_TIMER_PHYS_INT:
- /* Fall through */
+ [[fallthrough]];
case ARM_EL1_PHYS_TIMER_PHYS_INT:
panic("Timer interrupt not expected to fire: %u\n",
interrupt_id);
@@ -468,6 +468,7 @@
* Fall through in the case handling has not been fully
* completed.
*/
+ [[fallthrough]];
default:
/*
* Either invoke the handler related to partitions from