[pull] master from JuliaLang:master #2024
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Instrumenting the garbage collector results in a ton of warnings that would require relaxed atomics to suppress, and is a huge performance drag. This change turns off instrumentation for non-atomic operations for everything in `src/gc-*.c`. Also, adds a `suppressions.txt` to be used with `TSAN_OPTIONS="suppressions=contrib/tsan/suppressions.txt"` that suppresses the lock order inversion warning on method locks, which is documented in https://docs.julialang.org/en/v1.13-dev/devdocs/locks/#Exceptions-to-the-lock-hierarchy.
Fix the unbounded possible corruption of the user input by reverting to
a non-scoped begin instead of let.
```julia
julia> ex = Base.remove_linenums!(:(using A; using B; using C)); REPL.Numbered.get_usings!([], ex)
2-element Vector{Any}:
:(using A)
:(using C)
julia> ex
quote
using B
end
```
The program doesn't need to tell you it is doing do what you just told it to do. It should just do it.
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