Any time somebody tells you how simple C is by comparison, point them at https://port70.net/~nsz/c/c11/n1570.html#6.2.4p5 https://port70.net/~nsz/c/c11/n1570.ht

Any time somebody tells you how simple C is by comparison, point them at https://port70.net/~nsz/c/c11/n1570.html#6.2.4p5 https://port70.net/~nsz/c/c11/n1570.html#6.2.4p5: > An object whose identifier is declared with no linkage and without the storage-class specifier static has automatic storage duration, as do some compound literals. The result of attempting to indirectly access an object with automatic storage duration from a thread other than the one with which the object is associated is implementation-defined (I bet in practice almost all implementations behave as an equivalent C++ would, as per your notes, so only the ordering is relevant. But people maintaining C implementations have on occasion shown themselves to be their users' enemies, so don't quote me on this!)