[C++20 Modules] Can't build Client: static functions doesn't work with header units

[Bizzarrus]

My project is heavily using C++20 modules. I'm compiling using VS 2022, with the /translateIncludes option enabled (for compability with some other libraries - this option automatically turns every include of a header into an import of a header unity).

However, header units don't work well with static declarations, because a header unit is a translation unit on its own, and static functions are only defined within the same translation unit, so the consumer of the header can't use the functions that were declared as static.

This results in this build error: error C2129: static function 'bool has_callstack(void) noexcept' declared but not defined when I build my project while including Tracy.hpp and using ``TracyAlloc/TracyFree to markup my memory allocations.

The affected functions are (as far as I've found, maybe there are others that I just don't use yet)

• bool has_callstack()
• void* Callstack( int32_t depth )
• void* tracy_malloc( size_t size )
• void* tracy_malloc_fast( size_t size )
• void tracy_free( void* ptr )
• void tracy_free_fast( void* ptr )
• void* tracy_realloc( void* ptr, size_t size )

removing the static from the declaration (but keeping the inline or constexpr, so the linker can deduplicate the symbols) fixes the issue.