Merge pull request JuliaLang/julia#40546 from JuliaLang/jb/chethega/tlrng

task-local xoshiro rebased

Author: JeffBezanson

src/Test.jl

@@ -1277,7 +1277,7 @@ function testset_beginend(args, tests, source)
         local oldrng = copy(RNG)
         try
             # RNG is re-seeded with its own seed to ease reproduce a failed test
-            Random.seed!(RNG.seed)
+            Random.seed!(Random.GLOBAL_SEED)
             let
                 $(esc(tests))
             end
@@ -1368,7 +1368,7 @@ function testset_forloop(args, testloop, source)
         local ts
         local RNG = default_rng()
         local oldrng = copy(RNG)
-        Random.seed!(RNG.seed)
+        Random.seed!(Random.GLOBAL_SEED)
         local tmprng = copy(RNG)
         try
             let
@@ -1839,7 +1839,7 @@ end
 
 "`guardseed(f, seed)` is equivalent to running `Random.seed!(seed); f()` and
 then restoring the state of the global RNG as it was before."
-guardseed(f::Function, seed::Union{Vector{UInt32},Integer}) = guardseed() do
+guardseed(f::Function, seed::Union{Vector{UInt64},Vector{UInt32},Integer,NTuple{4,UInt64}}) = guardseed() do
     Random.seed!(seed)
     f()
 end

test/runtests.jl

@@ -853,7 +853,7 @@ let code = quote
 end
 
 @testset "@testset preserves GLOBAL_RNG's state, and re-seeds it" begin
-    # i.e. it behaves as if it was wrapped in a `guardseed(GLOBAL_RNG.seed)` block
+    # i.e. it behaves as if it was wrapped in a `guardseed(GLOBAL_SEED)` block
     seed = rand(UInt128)
     Random.seed!(seed)
     a = rand()