diff options
| author | Harald Hoyer <harald@redhat.com> | 2013-04-18 12:05:41 +0200 |
|---|---|---|
| committer | Harald Hoyer <harald@redhat.com> | 2013-04-18 12:05:41 +0200 |
| commit | a858b64dddf79177e12ed30f5e8c47a1471c8bfe (patch) | |
| tree | 03d1603458599d8b49c5d553d407eea0164ac664 /src/shared/macro.h | |
| parent | 98f59e59e0c31ffcb953d3a7dba0da5e6f2f55f7 (diff) | |
macro.h: let F_TYPE_CMP() macro fail to compile, if second parameter is not const
If the magic parameter is not a const, then the macro does not work, so
better fail to compile, than be surprised afterwards.
Diffstat (limited to 'src/shared/macro.h')
| -rw-r--r-- | src/shared/macro.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/shared/macro.h b/src/shared/macro.h index 08b40fd2b8..2bb72f0d16 100644 --- a/src/shared/macro.h +++ b/src/shared/macro.h @@ -272,11 +272,12 @@ do { \ * signed int in the kernel and these negative numbers are extended to * long, which cannot be simply compared to the magic constants anymore. */ -#define F_TYPE_CMP(f, c) \ +#define F_TYPE_CMP(f_type, magic) \ __extension__ ({ \ - __SWORD_TYPE _f = (f); \ - const __SWORD_TYPE _c = (c); \ - const int _c32 = (c); \ + __SWORD_TYPE _f = (f_type); \ + const __SWORD_TYPE _c = (magic); \ + const int _c32 = 1 ? (magic) \ + : sizeof((int[magic]){0}); \ (_f == _c || _f == _c32 ); \ }) |