julia

9002d166 - abstractarray: fix `append!(::AbstractVector, ...)` interface (#49754)

abstractarray: fix `append!(::AbstractVector, ...)` interface (#49754) JuliaLang/julia#47154 mistakenly added `@_safeindex` macro on the `_append!(a::AbstractVector, ::Union{HasLength,HasShape}, iter)` method, although `@_safeindex` is only valid for builtin vectors i.e. `Vector`. This commit adds `isa` check so that `@_safeindex` is only applied to builtin vectors. The `isa` check should be removed at compile time, so it should not affect the runtime performance. closes #49748