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relocation: account for trailing path separator in depot paths #55355

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Fixes #55340

@fatteneder fatteneder added the compiler:precompilation Precompilation of modules label Aug 2, 2024
@fatteneder fatteneder added the kind:bugfix This change fixes an existing bug label Aug 2, 2024
@giordano giordano added the backport 1.11 Change should be backported to release-1.11 label Aug 2, 2024
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If I understand it correctly, this is yet another instance of #43137

base/loading.jl Show resolved Hide resolved
@KristofferC KristofferC mentioned this pull request Aug 8, 2024
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@@ -3131,7 +3131,7 @@ function replace_depot_path(path::AbstractString)
depot = dirname(depot)
end

if startswith(path, depot)
if startswith(path, string(depot, Filesystem.pathsep())) || path == depot
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In many cases, Windows accepts / as a path separator - is there any risk of that appearing here?

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oh, I did not know that.
I pushed a fix with an accompanying test.

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@topolarity topolarity Aug 9, 2024

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Thanks! The replace isn't safe for UNC paths (it destroys double slashes \\), but maybe we don't support those?

https://learn.microsoft.com/en-us/dotnet/standard/io/file-path-formats#example-ways-to-refer-to-the-same-file shows some exotic ways to build paths on Windows, in case we do. The Base path functionality uses splitdrive to get the UNC, etc. prefixes out of the way.

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I now settled to just use abspath to normalize both.
That should also increase the accuracy in matching depots in cases where one is an absolute and the other a relative one.

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I traced back the use of replace_depot_path and found that these issues should already be taken care of.
In particular,

  • the path argument will be absolute and normalized when it arrives, which happens at base/loading.jl:_include_dependency,
  • the elements of DEPOT_PATH also went through abspath before they are handed over to precompilation, see base/loading.jl:create_expr_cache.

So I will revert changes related to this and make the tests pass again.

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Right before spawning the precompilation process, here

depot_path = String[abspath(x) for x in DEPOT_PATH]

Shouldn't --output-ji hit that too?

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That's something that spawns a process with --output-ji not the other way around

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I am sorry, I don't understand.
Where would be the entry point for what you describe?

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Ah, my point is that it's legal to spawn Julia with --output-ji outside of the spawning that precompilation does, and in that case the DEPOT_PATH may not be normalized

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Ok, I see. Indeed, that's problematic.

@fatteneder fatteneder force-pushed the fa/fix-55340 branch 2 times, most recently from fd6ec91 to 6a7b91f Compare August 9, 2024 20:41
@KristofferC
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Seems like something is not good right now:

ERROR: LoadError: ArgumentError: embedded NULs are not allowed in C strings: "/cache/build/builder-amdci5-4/julialang/julia-master/\0+\x16,\xe1v\xe4\xf0\xb8.L=\xdaK3\x89\xf4StyledStrings

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Windows now chokes on abspath and complains about an invalid character:

Base.InvalidCharError{Char}(char=Char(0xc6000000))
throw_invalid_char at .\char.jl:93
UInt32 at .\char.jl:140 [inlined]
convert at .\char.jl:192 [inlined]
cconvert at .\essentials.jl:675 [inlined]
lowercase at .\strings\unicode.jl:294 [inlined]
map at .\strings\basic.jl:667
lowercase at .\strings\unicode.jl:636 [inlined]
abspath at .\path.jl:452
replace_depot_path at .\loading.jl:3126

Any idea what that could be?

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vtjnash commented Aug 10, 2024

abspath does not always preserve being a path to the same file (except usually on Windows), so generally is not correct to use compared to other alternatives

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this should be good to go now

KristofferC added a commit that referenced this pull request Aug 26, 2024
Backported PRs:
- [x] #54962 <!-- Add timing to precompile trace compile -->
- [x] #55180 <!-- compress jit debuginfo for easy memory savings -->
- [x] #54919 <!-- Fix annotated join with non-concrete eltype iters -->
- [x] #55013 <!-- [docs] change docstring to match code -->
- [x] #55017 <!-- TOML: Make `Dates` a type parameter -->
- [x] #54033 <!-- Fix a bug in `stack`'s DimensionMismatch error message
-->
- [x] #55242 <!-- fix at-main docstring to not code quote a compat box
-->
- [x] #55261 <!-- Make `jl_*affinity` tests more portable -->
- [x] #54736 <!-- specificity: ensure fast-path in `sub/eq_msp` handle
missing `UnionAll` wrapper correctly. -->
- [x] #55299 <!-- typeintersect: fix bounds merging during inner
`intersect_all`. -->
- [x] #55302 <!-- Add `lbt_forwarded_funcs()` to debug LBT forwarding
issues -->
- [x] #55148 <!-- Random: Mark unexported public symbols as public -->
- [x] #55303 <!-- avoid overflowing show for OffsetArrays around typemax
-->
- [x] #55317 <!-- Restrict argument to `isleapyear(::Integer)` -->
- [x] #55327 <!-- Profile: Fix stdlib paths -->
- [x] #55330 <!-- [libblastrampoline] Bump to v5.11.0 -->
- [x] #55310 <!-- Preserve structure in scaling triangular matrices by
NaN -->
- [x] #55329 <!-- mapreduce: don't inbounds unknown functions -->
- [x] #55356 <!-- Profile: close files when assembling heap snapshot -->
- [x] #55371 <!-- Fix tr for block SymTridiagonal -->
- [x] #55307 <!-- Make REPL.TerminalMenus public -->
- [x] #55362 <!-- inference: fix missing LimitedAccuracy markers -->
- [x] #55306 <!-- AllocOpt: Fix stack lowering where alloca continas
boxed and unboxed data -->
- [x] #55395 <!-- fix #55389: type-unstable `join` -->
- [x] #55226 <!-- re-add `unsafe_convert` for Reinterpret and Reshaped
array -->
- [x] #55405 <!-- handle unbound vars in NTuple fields -->
- [x] #55365 <!-- ml-matches: ensure all methods are included -->
- [x] #55428 <!-- codegen: move undef freeze before promotion point -->
- [x] #55419 <!-- `stale_cachefile`: handle if the expected cache file
is missing -->
- [x] #55470 <!-- Add push! implementation for AbstractArray depending
only on resize! -->
- [x] #55483 <!-- fix hierarchy level of "API reference" in `Dates`
documentation -->
- [x] #55268 <!-- simplify complex atanh and remove singularity
perturbation -->
- [x] #55441 <!-- fix Event to use normal Condition variable -->
- [x] #55413 <!-- subtyping: fast path for lhs union and rhs typevar -->
- [x] #55492 <!-- build: add missing dependencies for expmap -->
- [x] #55507 <!-- Fix fast getptls ccall lowering. -->
- [x] #55424 <!-- add missing clamp function for IOBuffer -->
- [x] #55504 <!-- Update symmetric docstring to reflect the type of uplo
-->
- [x] #55107 <!-- Make the memory GEP an inbounds GEP since the bounds
check has happened somewhere else -->
- [x] #55411 <!-- Vendor the terminfo database for use with
base/terminfo.jl -->
- [x] #55452 <!-- Do not load `ScopedValues` with `using` -->
- [x] #55407 <!-- Remove deprecated non string API for LLVM pass
pipeline and parse all options -->
- [x] #55461 <!-- 🤖 [master] Bump the StyledStrings stdlib from d7496d2
to f6035eb -->
- [x] #55433 <!-- Backport #55407
to 1.11 -->
- [x] #55225 <!-- [1.11 backport] trace-compile: don't generate
`precompile` statements for OpaqueClosure methods (#55072) -->
- [x] #55212 <!-- Make `Base.depwarn()` public -->
- [x] #552
- [x] #55052 <!-- Fix `(l/r)mul!` with `Diagonal`/`Bidiagonal` -->
- [x] #55251 <!-- Restrict binary ops for Diagonal and Symmetric to
Number eltypes -->95 <!-- LAPACK: Aggressive constprop to concretely
infer syev!/syevd! -->
- [x] #55522 <!-- Fix tr for Symmetric/Hermitian block matrices -->

Need manual backport:
- [x] #55342 <!-- Ensure bidiagonal setindex! does not read indices in
error message -->

Contains multiple commits, manual intervention needed:

- [ ] #55336 <!-- codegen: take gc roots (and alloca alignment) more
seriously -->


Non-merged PRs with backport label:
- [ ] #55506 <!-- Fix indexing in _mapreducedim for OffsetArrays -->
- [ ] #55500 <!-- make jl_thread_suspend_and_get_state safe -->
- [ ] #55499 <!-- propagate the terminal's `displaysize` to the
`IOContext` used by the REPL -->
- [ ] #55458 <!-- Allow for generically extracting unannotated string
-->
- [ ] #55457 <!-- Make AnnotateChar equality consider annotations -->
- [ ] #55453 <!-- Privatise the annotations API, for StyledStrings -->
- [ ] #55443 <!-- Add test for upper/lower/titlecase and fix call -->
- [ ] #55355 <!-- relocation: account for trailing path separator in
depot paths -->
- [ ] #55220 <!-- `isfile_casesensitive` fixes on Windows -->
- [ ] #55169 <!-- `propertynames` for SVD respects private argument -->
- [ ] #54457 <!-- Make `String(::Memory)` copy -->
- [ ] #53957 <!-- tweak how filtering is done for what packages should
be precompiled -->
- [ ] #51479 <!-- prevent code loading from lookin in the versioned
environment when building Julia -->
- [ ] #50813 <!-- More doctests for Sockets and capitalization fix -->
- [ ] #50157 <!-- improve docs for `@inbounds` and
`Base.@propagate_inbounds` -->
- [ ] #41244 <!-- Fix shell `cd` error when working dir has been deleted
-->
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precompilation problems with 1.11.0-rc2
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