Fix Moshi bare-singleton deprecation warning on v2-backport

Project.toml

@@ -1,6 +1,6 @@
 name = "SciMLBase"
 uuid = "0bca4576-84f4-4d90-8ffe-ffa030f20462"
-version = "2.155.1"
+version = "2.155.2"
 authors = ["Chris Rackauckas <accounts@chrisrackauckas.com> and contributors"]
 
 [deps]
@@ -100,7 +100,7 @@ Markdown = "1.10"
 Measurements = "2"
 MonteCarloMeasurements = "1"
 Mooncake = "0.4, 0.5"
-Moshi = "0.3.6"
+Moshi = "0.3.11"
 PartialFunctions = "1.1"
 PreallocationTools = "0.4.31, 1.0"
 PrecompileTools = "1.2.1"

src/clock.jl

@@ -1,12 +1,12 @@
 abstract type AbstractClock end
 
 @data Clocks <: AbstractClock begin
-    ContinuousClock
+    ContinuousClock()
     struct PeriodicClock
         dt::Union{Nothing, Float64, Rational{Int}}
         phase::Float64 = 0.0
     end
-    SolverStepClock
+    SolverStepClock()
     struct EventClock
         id::Symbol
     end

test/clock.jl

@@ -70,3 +70,17 @@ end
     @test clocktype(PeriodicClock(1 // 2, 3.14)) === (1 // 2, 3.14)
     @test clocktype(pi) === "other" broken = true
 end
+
+@testset "SciMLBase precompiles without deprecation warnings" begin
+    # Moshi's bare singleton variant syntax (`ContinuousClock` rather than
+    # `ContinuousClock()`) only warns while the `@data` block is macroexpanded, so a
+    # forced recompile is the only way to observe it from a test.
+    script = """Base.compilecache(Base.identify_package("SciMLBase"))"""
+    cmd = `$(Base.julia_cmd()) --startup-file=no --project=$(Base.active_project()) -e $script`
+    buf = IOBuffer()
+    run(pipeline(ignorestatus(cmd), stdout = buf, stderr = buf))
+    output = String(take!(buf))
+    occursin("deprecated", output) &&
+        @info "SciMLBase precompilation output" output
+    @test !occursin("deprecated", output)
+end