Function xmlMemGet 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn xmlMemGet(
    freeFunc: *mut Option<xmlFreeFunc>,
    mallocFunc: *mut Option<xmlMallocFunc>,
    reallocFunc: *mut Option<xmlReallocFunc>,
    strdupFunc: *mut Option<xmlStrdupFunc>,
) -> c_int

Get the current memory allocator functions (upstream xmlmemory.h).

UPSTREAM-PARITY

int xmlMemGet(xmlFreeFunc *freeFunc,
              xmlMallocFunc *mallocFunc,
              xmlReallocFunc *reallocFunc,
              xmlStrdupFunc *strdupFunc);

Writes the current exported allocator variables through NULL-tolerant output pointers (upstream xmlmemory.c: NULL outputs are skipped) and returns 0.

SAFETY

• All non-NULL output pointers must be valid and writable