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| author | David Sterba <dsterba@suse.com> | 2016-10-04 22:14:12 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2016-10-05 12:39:01 +0200 |
| commit | c8d9f05cec0421a0eb3476a664da7d5a0767284d (patch) | |
| tree | 2f5b5d2dd3484da4c1b145cdf07703b230abb6cf | |
| parent | eae42a1fe4f1d7a2236b9cdb9c957bf1b1cc175c (diff) | |
btrfs-progs: kerncompat: add build-time assertion support
Macro to verify compile-time conditions, like sie of structures or
types.
Signed-off-by: David Sterba <dsterba@suse.com>
| -rw-r--r-- | kerncompat.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kerncompat.h b/kerncompat.h index 0cd85dc6..ea04ef3a 100644 --- a/kerncompat.h +++ b/kerncompat.h @@ -68,6 +68,10 @@ #define ULONG_MAX (~0UL) #endif +#define __token_glue(a,b,c) ___token_glue(a,b,c) +#define ___token_glue(a,b,c) a ## b ## c +#define BUILD_ASSERT(x) extern int __token_glue(compile_time_assert_,__LINE__,__COUNTER__)[1-2*!(x)] __attribute__((unused)) + #ifndef BTRFS_DISABLE_BACKTRACE #define MAX_BACKTRACE 16 static inline void print_trace(void) |