freeMBlocks() is broken due to hidden use-after-free issue. Now the ghc-asterius block allocator never returns memory to OS, and we stick to plain aligned_alloc calls here before we sort out the Asterius/C ABI incompatability issue.
Disable default buffering for stdin, stdout; remove calls to flushStdHandles in the default top handler. Makes debugging hard, and wasi32 syscalls are supposed to be cheap anyway.
Updates in upstream
ghc-asterius:freeMBlocks()is broken due to hidden use-after-free issue. Now theghc-asteriusblock allocator never returns memory to OS, and we stick to plainaligned_alloccalls here before we sort out the Asterius/C ABI incompatability issue.stdin,stdout; remove calls toflushStdHandlesin the default top handler. Makes debugging hard, and wasi32 syscalls are supposed to be cheap anyway.