Do not rely on file extensions after path canonicalization. #32828
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r? @nrc (rust_highfive has picked a reviewer for you, use r? to override) |
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Also, I'd like to nominate this fix for backporting into 1.8. |
| fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { | ||
| f.write_str(match *self { | ||
| CrateFlavor::Rlib => "rlib", | ||
| CrateFlavor::Dylib => "dylib" |
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Could you add a comma at the end of this line please?
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This seems pretty similar to #32317 in scope, but perhaps somewhat different in terms of problem solved? Could you also be sure to add a test for this as well? |
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No, I think it's the same issue. Wasn't aware #32317 existed. |
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I think that #32317 is arguably more general, but I somewhat prefer this tactic as it solves the problem at hand without changing the semantics that much |
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cc @taralx |
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Added a test in case you want to go with this one. |
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This fixes the problem that I have specifically, although #32317 is probably also worth doing long-term (once I work out what's broken about Windows with it). |
Do not rely on file extensions after path canonicalization. Rustc does not recognize libraries which are symlinked to files having extension other than .rlib. The problem is that find_library_crate calls fs::canonicalize on found library paths, but then the resulting path is passed to get_metadata_section, which assumes it will end in ".rlib" if it's an rlib (from https://internals.rust-lang.org/t/is-library-path-canonicalization-worth-it/3206). cc #29433
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Nominating for backport on behalf of @taralx. |
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Discussed in @rust-lang/compiler meeting. Is this fixing a regression or just some longstanding bug? |
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This is technically a regression due to #12474. Before that, symlinks named *.rlib worked, regardless of the name of the thing they pointed to. |
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@nikomatsakis I believe, (ias @taralx pointed out) that this is just fixing a longstanding bug |
In that case, I believe (based on consensus from previous @rust-lang/compiler meeting) we would prefer not to backport. |
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@rust-lang/compiler: Can you please reconsider? This prevents Rust builds from working on our build cluster. I believe this is a pretty non-invasive change, and the beta cycle has just started.... |
Rustc does not recognize libraries which are symlinked to files having extension other than .rlib. The problem is that find_library_crate calls fs::canonicalize on found library paths, but then the resulting path is passed to get_metadata_section, which assumes it will end in ".rlib" if it's an rlib (from https://internals.rust-lang.org/t/is-library-path-canonicalization-worth-it/3206).
cc #29433