376 struct InSituRegion(size_t size, size_t minAlign = platformAlignment)  struct
386     version (X86) enum growDownwards = Yes.growDownwards;
387     else version (X86_64) enum growDownwards = Yes.growDownwards;
388     else version (ARM) enum growDownwards = Yes.growDownwards;
389     else version (AArch64) enum growDownwards = Yes.growDownwards;
390     else version (HPPA) enum growDownwards = No.growDownwards;
391     else version (PPC) enum growDownwards = Yes.growDownwards;
392     else version (PPC64) enum growDownwards = Yes.growDownwards;
393     else version (MIPS32) enum growDownwards = Yes.growDownwards;
394     else version (MIPS64) enum growDownwards = Yes.growDownwards;
395     else version (RISCV32) enum growDownwards = Yes.growDownwards;
419     InSituRegion!(4096) a1;  argument
425     alias alignment = minAlign;
427     private void lazyInit()  in lazyInit()
439     void[] allocate(size_t n)  in allocate()
455     void[] alignedAllocate(size_t n, uint a)  in alignedAllocate()
479     bool deallocate(void[] b)  in deallocate()
489     Ternary owns(void[] b)  in owns()
500     bool expand(ref void[] b, size_t delta)  in expand()
509     bool deallocateAll()  in deallocateAll()
538     InSituRegion!(128 * 1024, 16) r1;  argument