special tests: zero for a TypeWithoutZero instance

JuliaLang · Apr 4, 2024 · 854c779 · 854c779
1 parent 2a4c811
commit 854c779
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/stdlib/LinearAlgebra/test/special.jl b/stdlib/LinearAlgebra/test/special.jl
@@ -111,6 +111,7 @@ Random.seed!(1)
         struct TypeWithZero end
         Base.promote_rule(::Type{TypeWithoutZero}, ::Type{TypeWithZero}) = TypeWithZero
         Base.convert(::Type{TypeWithZero}, ::TypeWithoutZero) = TypeWithZero()
+        Base.zero(x::Union{TypeWithoutZero, TypeWithZero}) = zero(typeof(x))
         Base.zero(::Type{<:Union{TypeWithoutZero, TypeWithZero}}) = TypeWithZero()
         LinearAlgebra.symmetric(::TypeWithoutZero, ::Symbol) = TypeWithoutZero()
         Base.transpose(::TypeWithoutZero) = TypeWithoutZero()