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MDEV-9128 - Compiling on IBM System Z fails

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Provided IBM System Z have outdated compiler version, which supports gcc sync
builtins but not gcc atomic builtins. It also has weak memory model.

InnoDB attempted to verify if __sync_lock_test_and_set() is available by
checking IB_STRONG_MEMORY_MODEL. This macro has nothing to do with availability
of __sync_lock_test_and_set(), the right one is HAVE_ATOMIC_BUILTINS.
This commit is contained in:
Sergey Vojtovich 2015-11-18 15:51:20 +04:00
parent f00d7657f8
commit edf6354bd6
1 changed files with 1 additions and 1 deletions

2
storage/innobase/include/os0sync.h
View file

@ -487,7 +487,7 @@ os_atomic_clear(volatile lock_word_t* ptr)
__atomic_clear(ptr, __ATOMIC_RELEASE);
}
# elif defined(IB_STRONG_MEMORY_MODEL)
# elif defined(HAVE_ATOMIC_BUILTINS)
/** Do an atomic test and set.
@param[in,out] ptr Memory location to set to non-zero