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Introduced macro to silence implicit-fallthrough warning

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The fallthrough comment is not enough to silence the warning
with -Wimplicit-fallthrough=5.

This commit also fixes submodule handling in github actions.
This commit is contained in:
Teemu Ollakka
2021-11-10 20:07:59 +02:00
parent 3f79d4390c
commit d48122a1fa
3 changed files with 23 additions and 6 deletions
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17
include/wsrep/compiler.hpp
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@ -34,8 +34,11 @@
* left empty.
* WSREP_UNUSED - Can be used to mark variables which may be present in
* debug builds but not in release builds.
* WSREP_FALLTHROUGH - Silence implicit fallthrough warning.
*/
#ifndef WSREP_LIB_COMPILER_HPP
#define WSREP_LIB_COMPILER_HPP
#if __cplusplus >= 201103L && !(__GNUC__ == 4 && __GNUG_MINOR__ < 8)
#define WSREP_NORETURN [[noreturn]]
@ -51,3 +54,17 @@
#define WSREP_OVERRIDE
#endif // __cplusplus >= 201103L
#define WSREP_UNUSED __attribute__((unused))
#if __GNUC__ >= 7
#define WSREP_FALLTHROUGH __attribute__((fallthrough))
#elif defined(__clang__)
# if defined(__has_warning)
# if __has_feature(cxx_attributes) && __has_warning("-Wimplicit-fallthrough")
# define WSREP_FALLTHROUGH [[clang::fallthrough]]
# endif
# endif
#else // __clang __
#define WSREP_FALLTHROUGH ((void)0)
#endif // __GNUC__ >= 7 || (__clang__ && __clang_major__ >= 10)
#endif // WSREP_LIB_COMPILER_HPP