| Defined in header <threads.h> | ||
|---|---|---|
| #define thread_local _Thread_local | (since C11) (removed in C23) | 
Convenience macro which can be used to specify that an object has thread-local storage duration.
Since C23, thread_local is itself a keyword, which may also be a predefined macro, so <threads.h> no longer provides it.
| C++ documentation for thread_local | 
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