> declared in separate translation units Now if I include both library headers in code that attempts to plug them together, the types will be incompatible. Al

> declared in separate translation units Now if I include both library headers in code that attempts to plug them together, the types will be incompatible. Although not a proof in itself, GCC and Clang seem to agree: https://godbolt.org/z/1ocr5Go5b https://godbolt.org/z/1ocr5Go5b.