rustc: Compare paths with --extern, not bytes #15971
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The right hand side of the comparison in these checks are values of type Option<&Path> which are normalized versions of the left-hand side, so they're not guaranteed to be byte-for-byte equivalent even though they're the same path. For this reasons, the command line arguments are promoted to paths for comparison of equality. This fixes a bug on windows where if a library was specified with --extern it would then be picked up twice because it was not considered to have been previously registered.
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The right hand side of the comparison in these checks are values of type Option<&Path> which are normalized versions of the left-hand side, so they're not guaranteed to be byte-for-byte equivalent even though they're the same path. For this reasons, the command line arguments are promoted to paths for comparison of equality. This fixes a bug on windows where if a library was specified with --extern it would then be picked up twice because it was not considered to have been previously registered.
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fix: don't make `MissingMatchArms` diagnostic for empty match body before <img width="423" alt="before" src="https://github.com/rust-lang/rust-analyzer/assets/71162630/5c0e46fb-0c03-42f2-96ff-8e5245c25965"> after <img width="423" alt="after" src="https://github.com/rust-lang/rust-analyzer/assets/71162630/e2479dc5-3634-479b-af29-0b0ec7dc4a4f"> close rust-lang/rust-analyzer#15954
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The right hand side of the comparison in these checks are values of type
Option<&Path> which are normalized versions of the left-hand side, so they're
not guaranteed to be byte-for-byte equivalent even though they're the same path.
For this reasons, the command line arguments are promoted to paths for
comparison of equality.
This fixes a bug on windows where if a library was specified with --extern it
would then be picked up twice because it was not considered to have been
previously registered.