c - C 结构有大小限制吗？

Question

C 结构有大小限制吗？

Answer 1

来自 C 标准:

5.2.4.1 Translation limits

1 The implementation shall be able to translate and execute at least one program that contains at least one instance of every one of the following limits:

... — 65535 bytes in an object (in a hosted environment only)
... — 1023 members in a single structure or union
... — 63 levels of nested structure or union definitions in a single struct-declaration-list ... 13) Implementations should avoid imposing fixed translation limits whenever possible.

除此之外，上限为 SIZE_MAX(size_t 的最大值)。