Fix return type in memcpy
FFI signature
#52
Merged
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Consider the signature of
memcpy
(e.g. from here):Note that the return type is
void *
, a pointer, and notvoid
. Hence, this PR changes the return type fromIO ()
toIO (Ptr a)
; was e.g. done here in the very similar code inarray
.This will probably not change anything on most platform; concrete motivation is that compiling
regex-tdfa
using the GHC 9.6 WASM backend did yield a link-time warning: