portugalfuturista/seL4
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

make macro ARRAY_SIZE() handle corner cases

Browse source 
Put the parameter in brackets to ensure it is an atom. This makes the
macro work as expected in corner cases like ARRAY_SIZE(foo + 3) also.

Signed-off-by: Axel Heider <axelheider@gmx.de>
This commit is contained in:
Axel Heider 2022-03-10 07:05:24 +01:00 committed by Kent McLeod
parent ce73ba379d
commit c673f1cded
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
include/util.h
View file

@ -41,7 +41,7 @@
#define IS_ALIGNED(n, b) (!((n) & MASK(b)))
#define ROUND_DOWN(n, b) (((n) >> (b)) << (b))
#define ROUND_UP(n, b) (((((n) - UL_CONST(1)) >> (b)) + UL_CONST(1)) << (b))
#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#define MIN(a,b) (((a)<(b))?(a):(b))
#define MAX(a,b) (((a)>(b))?(a):(b))