Calling sizehint! with a UInt length parameter causes errors for some container types. #58531
Description
For some containers (such as Vector), this appears to be a non-issue.
A minimum working example:
d = Dict{UInt,String}()
sizehint!(d, UInt(1024))
Obviously this is easily worked-around, but could be an issue when running older Julia code with 1.11.
The resulting error indicates the issue is with UInt not being a valid type for Memory constructors:
ERROR: MethodError: no method matching Memory{UInt8}(::UndefInitializer, ::UInt64)
The type `Memory{UInt8}` exists, but no method is defined for this combination of argument types when trying to construct it.
Closest candidates are:
GenericMemory{kind, T, addrspace}(::UndefInitializer, ::Tuple{Int64}) where {T, kind, addrspace}
@ Core boot.jl:518
GenericMemory{kind, T, addrspace}(::UndefInitializer, ::Int64) where {T, addrspace, kind}
@ Core boot.jl:512
Memory{T}(::AbstractVector{S}) where {T, S}
@ Base genericmemory.jl:212
...
Stacktrace:
[1] rehash!(h::Dict{UInt64, String}, newsz::UInt64)
@ Base .\dict.jl:0
[2] #sizehint!#423
@ .\dict.jl:199 [inlined]
[3] sizehint!(d::Dict{UInt64, String}, newsz::UInt64)
@ Base .\dict.jl:193
[4] top-level scope
@ REPL[6]:1
(Version follows)
Julia Version 1.11.5
Commit 760b2e5b73 (2025-04-14 06:53 UTC)
Build Info:
Official https://julialang.org/ release
Platform Info:
OS: Windows (x86_64-w64-mingw32)
CPU: 24 × AMD Ryzen 9 5900X 12-Core Processor
WORD_SIZE: 64
LLVM: libLLVM-16.0.6 (ORCJIT, znver3)
Threads: 1 default, 0 interactive, 1 GC (on 24 virtual cores)