std: Fix stack overflow in SPARC clone() impl

Leave the minimum amount of stack space required by the ABI (16 * 8
bytes for the window contents plus 6 * 8 bytes for the input arguments)
on the new thread stack.
51f80deaf6LemonBoy committed on 5/1/2021, 9:02:04 AMparent807bb7c
1 file changedLine totals unavailable