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lib/zt_common: add STATIC_ASSERT macro

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Add `STATIC_ASSERT` macro that uses `_Static_assert` if available (was
introduced with gcc 4.6, see https://gcc.gnu.org/wiki/C11Status). For
example, this could be used for the verification of structure sizes at
compile time.

Acked-by: Jan Höppner <hoeppner@linux.ibm.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Marc Hartmayer
2020-02-11 17:26:34 +01:00
committed by Jan Höppner
parent 971970989b
commit bac3f93772
1 changed files with 7 additions and 0 deletions
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7
include/lib/zt_common.h
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@@ -22,6 +22,13 @@
# define UNUSED(x) x
#endif
#ifdef STATIC_ASSERT
#elif defined(__GNUC__) && ((__GNUC__ == 4 && __GNUC_MINOR__ >= 6) || __GNUC__ >= 5)
# define STATIC_ASSERT(test) _Static_assert((test), "(" #test ") failed");
#else
# define STATIC_ASSERT(test)
#endif
#define RELEASE_STRING STRINGIFY (S390_TOOLS_RELEASE)
#define TOOLS_LIBDIR STRINGIFY (S390_TOOLS_LIBDIR)
#define TOOLS_SYSCONFDIR STRINGIFY (S390_TOOLS_SYSCONFDIR)