spinlock: Make sure C and C++ have the same sizeof(k_spinlock) value
If CONFIG_SMP and SPIN_VALIDATE are both not defined the k_spinlock
struct will have no members. The result is that in C the sizeof
value of struct k_spinlock is 0 and in C++ it is 1.
This size difference causes problems when the k_spinlock
is embedded into another struct like k_msgq, because C and
C++ will have different ideas on the offsets of the members
that come after the k_spinlock member.
To prevent this we add a 1 byte dummy member to k_spinlock
when the user selects C++ support and k_spinlock would
otherwise be empty.
Signed-off-by: Erwin Rol <erwin@erwinrol.com>
1 file changed
