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macro: add STRLITERALLEN() and STRARRAYLEN()

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sizeof() implementation for string literals and string arrays that makes
it behave like strlen() for strings.

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
This commit is contained in:
Christian Brauner
2018-09-22 11:14:08 +02:00
parent b857f4be4f
commit 36dee4a2b6
1 changed files with 3 additions and 0 deletions
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src/lxc/macro.h
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@@ -348,4 +348,7 @@ extern int __build_bug_on_failed;
#define LXC_INVALID_UID ((uid_t)-1) #define LXC_INVALID_UID ((uid_t)-1)
#define LXC_INVALID_GID ((gid_t)-1) #define LXC_INVALID_GID ((gid_t)-1)
#define STRLITERALLEN(x) (sizeof(""x"") - 1)
#define STRARRAYLEN(x) (sizeof(x) - 1)
#endif /* __LXC_MACRO_H */ #endif /* __LXC_MACRO_H */