__SIZEOF_PTHREAD_COND_COMPAT_T

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
version(!CRuntime_Glibc && !CRuntime_Musl && !Darwin && !FreeBSD && !NetBSD && !OpenBSD && !DragonFlyBSD && !Solaris && !CRuntime_Bionic && CRuntime_UClibc && !X86_64 && !MIPS32 && !MIPS64 && ARM)
extern (C) nothrow @nogc
enum __SIZEOF_PTHREAD_COND_COMPAT_T = 12;

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