allocates a block of
.I sz
bytes from the subarena
-.IR s .
+.IR s .
If there isn't enough memory to allocate the block, the
exception
.B EXC_NOMEM
to the underlying arena's
.I free
function, or to try freeing blocks obtained directly from the arena's
-.I alloc
+.I alloc
function using
.BR subarena_free .
If you do, you'll get what you deserve.