Base: shell escaping: inference improvement to prevent invalidation

[nsajko]

Should make the sysimage more resistant to invalidation.

[nsajko]

Prevents this tree of invalidations resulting from the definition of struct S <: Integer; function Base.Int(::S) end:

{
    "type": "Tuple{Type{Int64}, Integer}",
    "tree": {
        "method_instance": {
            "method": "var\"#IOBuffer#391\"(read::Union{Nothing, Bool}, write::Union{Nothing, Bool}, append::Union{Nothing, Bool}, truncate::Union{Nothing, Bool}, maxsize::Integer, sizehint::Union{Nothing, Integer}, ::Type{IOBuffer}) @ Base iobuffer.jl:128",
            "method_instance": "MethodInstance for Base.var\"#IOBuffer#391\"(::Bool, ::Bool, ::Nothing, ::Bool, ::Int64, ::Integer, ::Type{IOBuffer})"
        },
        "children": [
            {
                "method_instance": {
                    "method": "kwcall(::NamedTuple, ::Type{IOBuffer}) @ Base iobuffer.jl:128",
                    "method_instance": "MethodInstance for Core.kwcall(::NamedTuple{(:sizehint,), <:Tuple{Integer}}, ::Type{IOBuffer})"
                },
                "children": [
                    {
                        "method_instance": {
                            "method": "var\"#sprint#446\"(context, sizehint::Integer, ::typeof(sprint), f::Function, args...) @ Base strings/io.jl:106",
                            "method_instance": "MethodInstance for Base.var\"#sprint#446\"(::Nothing, ::Integer, ::typeof(sprint), ::typeof(Base.escape_microsoft_c_args), ::Vararg{String})"
                        },
                        "children": [
                            {
                                "method_instance": {
                                    "method": "kwcall(::NamedTuple, ::typeof(sprint), f::Function, args...) @ Base strings/io.jl:106",
                                    "method_instance": "MethodInstance for Core.kwcall(::NamedTuple{(:sizehint,), <:Tuple{Any}}, ::typeof(sprint), ::typeof(Base.escape_microsoft_c_args), ::Vararg{String})"
                                },
                                "children": [
                                    {
                                        "method_instance": {
                                            "method": "escape_microsoft_c_args(args::AbstractString...) @ Base shell.jl:495",
                                            "method_instance": "MethodInstance for Base.escape_microsoft_c_args(::Vararg{String})"
                                        },
                                        "children": [
                                            {
                                                "method_instance": {
                                                    "method": "escape_microsoft_c_args(cmd::Cmd) @ Base cmd.jl:120",
                                                    "method_instance": "MethodInstance for Base.escape_microsoft_c_args(::Cmd)"
                                                },
                                                "children": [
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "method_instance": {
                            "method": "var\"#sprint#446\"(context, sizehint::Integer, ::typeof(sprint), f::Function, args...) @ Base strings/io.jl:106",
                            "method_instance": "MethodInstance for Base.var\"#sprint#446\"(::Nothing, ::Integer, ::typeof(sprint), ::typeof(Base.shell_escape_csh), ::Vararg{String})"
                        },
                        "children": [
                            {
                                "method_instance": {
                                    "method": "kwcall(::NamedTuple, ::typeof(sprint), f::Function, args...) @ Base strings/io.jl:106",
                                    "method_instance": "MethodInstance for Core.kwcall(::NamedTuple{(:sizehint,), <:Tuple{Any}}, ::typeof(sprint), ::typeof(Base.shell_escape_csh), ::Vararg{String})"
                                },
                                "children": [
                                    {
                                        "method_instance": {
                                            "method": "shell_escape_csh(args::AbstractString...) @ Base shell.jl:345",
                                            "method_instance": "MethodInstance for Base.shell_escape_csh(::Vararg{String})"
                                        },
                                        "children": [
                                            {
                                                "method_instance": {
                                                    "method": "shell_escape_csh(cmd::Cmd) @ Base cmd.jl:118",
                                                    "method_instance": "MethodInstance for Base.shell_escape_csh(::Cmd)"
                                                },
                                                "children": [
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            }
        ]
    }
}

[nsajko]

merge me bump