AcquireBlock      427 magick/memory.c   memory=AcquireBlock(size == 0 ? 1UL : size);
AcquireBlock      431 magick/memory.c         memory=AcquireBlock(size == 0 ? 1UL : size);
AcquireBlock      861 magick/memory.c     return(AcquireBlock(size));
AcquireBlock      862 magick/memory.c   memory=AcquireBlock(size);