Replace Array{...}(shape...)-like calls in base/[e-k]*.jl. (JuliaLang…

…#24757)

base/Enums.jl

@@ -65,7 +65,7 @@ macro enum(T, syms...)
  elseif !isa(T, Symbol)
  throw(ArgumentError("invalid type expression for enum $T"))
  end
- vals = Vector{Tuple{Symbol,Integer}}(0)
+ vals = Vector{Tuple{Symbol,Integer}}()
  lo = hi = 0
  i = zero(basetype)
  hasexpr = false

base/env.jl

@@ -98,7 +98,7 @@ if Sys.iswindows()
  pos = block[1]
  blk = block[2]
  len = ccall(:wcslen, UInt, (Ptr{UInt16},), pos)
- buf = Vector{UInt16}(len)
+ buf = Vector{UInt16}(uninitialized, len)
  @gc_preserve buf unsafe_copy!(pointer(buf), pos, len)
  env = transcode(String, buf)
  m = match(r"^(=?[^=]+)=(.*)$"s, env)

base/error.jl

@@ -60,7 +60,7 @@ end
 
 # convert dual arrays (ips, interpreter_frames) to a single array of locations
 function _reformat_bt(bt, bt2)
- ret = Array{Union{InterpreterIP,Ptr{Void}},1}()
+ ret = Vector{Union{InterpreterIP,Ptr{Void}}}()
  i, j = 1, 1
  while i <= length(bt)
  ip = bt[i]::Ptr{Void}

base/essentials.jl

@@ -370,7 +370,7 @@ function append_any(xs...)
  # used by apply() and quote
  # must be a separate function from append(), since apply() needs this
  # exact function.
- out = Vector{Any}(4)
+ out = Vector{Any}(uninitialized, 4)
  l = 4
  i = 1
  for x in xs
@@ -627,7 +627,7 @@ Val(x) = (@_pure_meta; Val{x}())
 # used by keyword arg call lowering
 function vector_any(@nospecialize xs...)
  n = length(xs)
- a = Vector{Any}(n)
+ a = Vector{Any}(uninitialized, n)
  @inbounds for i = 1:n
  Core.arrayset(false, a, xs[i], i)
  end
@@ -636,7 +636,7 @@ end
 
 function as_kwargs(xs::Union{AbstractArray,Associative})
  n = length(xs)
- to = Vector{Any}(n*2)
+ to = Vector{Any}(uninitialized, n*2)
  i = 1
  for (k, v) in xs
  to[i] = k::Symbol
@@ -647,7 +647,7 @@ function as_kwargs(xs::Union{AbstractArray,Associative})
 end
 
 function as_kwargs(xs)
- to = Vector{Any}(0)
+ to = Vector{Any}()
  for (k, v) in xs
  ccall(:jl_array_ptr_1d_push2, Void, (Any, Any, Any), to, k::Symbol, v)
  end

base/file.jl

@@ -35,7 +35,7 @@ export
 Get the current working directory.
 """
 function pwd()
- b = Vector{UInt8}(1024)
+ b = Vector{UInt8}(uninitialized, 1024)
  len = Ref{Csize_t}(length(b))
  uv_error(:getcwd, ccall(:uv_cwd, Cint, (Ptr{UInt8}, Ptr{Csize_t}), b, len))
  String(b[1:len[]])
@@ -257,7 +257,7 @@ end
 if Sys.iswindows()
 
 function tempdir()
- temppath = Vector{UInt16}(32767)
+ temppath = Vector{UInt16}(uninitialized, 32767)
  lentemppath = ccall(:GetTempPathW,stdcall,UInt32,(UInt32,Ptr{UInt16}),length(temppath),temppath)
  if lentemppath >= length(temppath) || lentemppath == 0
  error("GetTempPath failed: $(Libc.FormatMessage())")
@@ -269,7 +269,7 @@ tempname(uunique::UInt32=UInt32(0)) = tempname(tempdir(), uunique)
 const temp_prefix = cwstring("jl_")
 function tempname(temppath::AbstractString,uunique::UInt32)
  tempp = cwstring(temppath)
- tname = Vector{UInt16}(32767)
+ tname = Vector{UInt16}(uninitialized, 32767)
  uunique = ccall(:GetTempFileNameW,stdcall,UInt32,(Ptr{UInt16},Ptr{UInt16},UInt32,Ptr{UInt16}), tempp,temp_prefix,uunique,tname)
  lentname = findfirst(iszero,tname)-1
  if uunique == 0 || lentname <= 0
@@ -465,8 +465,8 @@ function walkdir(root; topdown=true, follow_symlinks=false, onerror=throw)
  close(chnl)
  return chnl
  end
- dirs = Vector{eltype(content)}(0)
- files = Vector{eltype(content)}(0)
+ dirs = Vector{eltype(content)}()
+ files = Vector{eltype(content)}()
  for name in content
  if isdir(joinpath(root, name))
  push!(dirs, name)

base/float.jl

@@ -203,8 +203,8 @@ end
 # "Fast Half Float Conversion" by Jeroen van der Zijp
 # ftp:https://ftp.fox-toolkit.org/pub/fasthalffloatconversion.pdf
 
-const basetable = Vector{UInt16}(512)
-const shifttable = Vector{UInt8}(512)
+const basetable = Vector{UInt16}(uninitialized, 512)
+const shifttable = Vector{UInt8}(uninitialized, 512)
 
 for i = 0:255
  e = i - 127

base/grisu/bignums.jl

@@ -54,7 +54,7 @@ mutable struct Bignum
  used_digits::Int32
  exponent::Int32
  function Bignum()
- bigits = Vector{UInt32}(kBigitCapacity)
+ bigits = Vector{UInt32}(uninitialized, kBigitCapacity)
  @inbounds for i = 1:kBigitCapacity
  bigits[i] = 0
  end

base/grisu/fastprecision.jl

@@ -87,7 +87,7 @@ function digitgen(w,buffer,requested_digits=1000)
  return r, kappa, len
 end
 
-function fastprecision(v, requested_digits, buffer = Vector{UInt8}(100))
+function fastprecision(v, requested_digits, buffer = Vector{UInt8}(uninitialized, 100))
  f = normalize(Float64(v))
  ten_mk_min_exp = kMinExp - (f.e + FloatSignificandSize)
  ten_mk_max_exp = kMaxExp - (f.e + FloatSignificandSize)

base/grisu/fastshortest.jl

@@ -102,7 +102,7 @@ function digitgen(low,w,high,buffer)
  end
 end
 
-function fastshortest(v, buffer = Vector{UInt8}(17))
+function fastshortest(v, buffer = Vector{UInt8}(uninitialized, 17))
  f = normalize(Float64(v))
  bound_minus, bound_plus = normalizedbound(v)
  ten_mk_min_exp = kMinExp - (f.e + FloatSignificandSize)

base/grisu/grisu.jl

@@ -9,7 +9,7 @@ const SHORTEST = 1
 const FIXED = 2
 const PRECISION = 3
 
-const DIGITS = Vector{UInt8}(309+17)
+const DIGITS = Vector{UInt8}(uninitialized, 309+17)
 
 include(joinpath("grisu", "float.jl"))
 include(joinpath("grisu", "fastshortest.jl"))

base/inference.jl

@@ -511,11 +511,11 @@ iskindtype(@nospecialize t) = (t === DataType || t === UnionAll || t === Union |
 
 const IInf = typemax(Int) # integer infinity
 const n_ifunc = reinterpret(Int32, arraylen) + 1
-const t_ifunc = Array{Tuple{Int, Int, Any}, 1}(n_ifunc)
-const t_ifunc_cost = Array{Int, 1}(n_ifunc)
-const t_ffunc_key = Array{Any, 1}(0)
-const t_ffunc_val = Array{Tuple{Int, Int, Any}, 1}(0)
-const t_ffunc_cost = Array{Int, 1}(0)
+const t_ifunc = Vector{Tuple{Int, Int, Any}}(uninitialized, n_ifunc)
+const t_ifunc_cost = Vector{Int}(uninitialized, n_ifunc)
+const t_ffunc_key = Vector{Any}()
+const t_ffunc_val = Vector{Tuple{Int, Int, Any}}()
+const t_ffunc_cost = Vector{Int}()
 function add_tfunc(f::IntrinsicFunction, minarg::Int, maxarg::Int, @nospecialize(tfunc), cost::Int)
  idx = reinterpret(Int32, f) + 1
  t_ifunc[idx] = (minarg, maxarg, tfunc)
@@ -4260,7 +4260,7 @@ function linearize_args!(args::Vector{Any}, atypes::Vector{Any}, stmts::Vector{A
  # linearize the IR by moving the arguments to SSA position
  na = length(args)
  @assert length(atypes) == na
- newargs = Vector{Any}(na)
+ newargs = Vector{Any}(uninitialized, na)
  for i = na:-1:1
  aei = args[i]
  ti = atypes[i]
@@ -5272,7 +5272,7 @@ function inlining_pass(e::Expr, sv::OptimizationState, stmts::Vector{Any}, ins,
  end
 
  for ninline = 1:100
- ata = Vector{Any}(length(e.args))
+ ata = Vector{Any}(uninitialized, length(e.args))
  ata[1] = ft
  for i = 2:length(e.args)
  a = exprtype(e.args[i], sv.src, sv.mod)
@@ -5301,7 +5301,7 @@ function inlining_pass(e::Expr, sv::OptimizationState, stmts::Vector{Any}, ins,
 
  if f === _apply
  na = length(e.args)
- newargs = Vector{Any}(na-2)
+ newargs = Vector{Any}(uninitialized, na-2)
  newstmts = Any[]
  effect_free_upto = 0
  for i = 3:na
@@ -6025,10 +6025,10 @@ function alloc_elim_pass!(sv::OptimizationState)
  end
  end
  else
- vals = Vector{Any}(nv)
+ vals = Vector{Any}(uninitialized, nv)
  local new_slots::Vector{Int}
  if !is_ssa
- new_slots = Vector{Int}(nv)
+ new_slots = Vector{Int}(uninitialized, nv)
  end
  for j=1:nv
  tupelt = tup[j+1]

base/io.jl

@@ -637,7 +637,7 @@ Read at most `nb` bytes from `s`, returning a `Vector{UInt8}` of the bytes read.
 function read(s::IO, nb::Integer = typemax(Int))
  # Let readbytes! grow the array progressively by default
  # instead of taking of risk of over-allocating
- b = Vector{UInt8}(nb == typemax(Int) ? 1024 : nb)
+ b = Vector{UInt8}(uninitialized, nb == typemax(Int) ? 1024 : nb)
  nr = readbytes!(s, b, nb)
  return resize!(b, nr)
 end
@@ -791,7 +791,7 @@ passing them as the second argument.
 function countlines(io::IO, eol::Char='\n')
  isascii(eol) || throw(ArgumentError("only ASCII line terminators are supported"))
  aeol = UInt8(eol)
- a = Vector{UInt8}(8192)
+ a = Vector{UInt8}(uninitialized, 8192)
  nl = 0
  while !eof(io)
  nb = readbytes!(io, a)

base/iostream.jl

@@ -211,7 +211,7 @@ end
 # num bytes available without blocking
 nb_available(s::IOStream) = ccall(:jl_nb_available, Int32, (Ptr{Void},), s.ios)
 
-readavailable(s::IOStream) = read!(s, Vector{UInt8}(nb_available(s)))
+readavailable(s::IOStream) = read!(s, Vector{UInt8}(uninitialized, nb_available(s)))
 
 function read(s::IOStream, ::Type{UInt8})
  b = ccall(:ios_getc, Cint, (Ptr{Void},), s.ios)
@@ -330,7 +330,7 @@ requested bytes, until an error or end-of-file occurs. If `all` is `false`, at m
 all stream types support the `all` option.
 """
 function read(s::IOStream, nb::Integer; all::Bool=true)
- b = Array{UInt8,1}(nb)
+ b = Vector{UInt8}(uninitialized, nb)
  nr = readbytes!(s, b, nb, all=all)
  resize!(b, nr)
 end

base/iterators.jl

@@ -895,7 +895,7 @@ function next(itr::PartitionIterator{<:Vector}, state)
 end
 
 function next(itr::PartitionIterator, state)
- v = Vector{eltype(itr.c)}(itr.n)
+ v = Vector{eltype(itr.c)}(uninitialized, itr.n)
  i = 0
  while !done(itr.c, state) && i < itr.n
  i += 1

base/libc.jl

@@ -245,7 +245,7 @@ getpid() = ccall(:jl_getpid, Int32, ())
 Get the local machine's host name.
 """
 function gethostname()
- hn = Vector{UInt8}(256)
+ hn = Vector{UInt8}(uninitialized, 256)
  err = @static if Sys.iswindows()
  ccall(:gethostname, stdcall, Int32, (Ptr{UInt8}, UInt32), hn, length(hn))
  else
@@ -307,7 +307,7 @@ if Sys.iswindows()
  C_NULL, e, 0, lpMsgBuf, 0, C_NULL)
  p = lpMsgBuf[]
  len == 0 && return ""
- buf = Vector{UInt16}(len)
+ buf = Vector{UInt16}(uninitialized, len)
  Base.@gc_preserve buf unsafe_copy!(pointer(buf), p, len)
  ccall(:LocalFree, stdcall, Ptr{Void}, (Ptr{Void},), p)
  return transcode(String, buf)

base/libdl.jl

@@ -234,7 +234,7 @@ if Sys.isbsd() && !Sys.isapple()
 end # bsd family
 
 function dllist()
- dynamic_libraries = Vector{AbstractString}(0)
+ dynamic_libraries = Vector{AbstractString}()
 
  @static if Sys.islinux()
  callback = cfunction(dl_phdr_info_callback, Cint,

base/libgit2/reference.jl

@@ -350,7 +350,7 @@ function Base.map(f::Function, bi::GitBranchIter)
  while !done(bi, s)
  val = f(s[1:2])
  if res === nothing
- res = Vector{typeof(val)}(0)
+ res = Vector{typeof(val)}()
  end
  push!(res, val)
  val, s = next(bi, s)