Update books

[rustbot]

rust-lang/book

1 commits in 39aeceaa3aeab845bc4517e7a44e48727d3b9dbe..05d114287b7d6f6c9253d5242540f00fbd6172ab
2026-02-03 15:19:04 UTC to 2026-02-03 15:19:04 UTC

• Temporarily remove the link to Drop::drop (Temporarily remove the link to Drop::drop book#4576)

rust-lang/nomicon

1 commits in 050c002a360fa45b701ea34feed7a860dc8a41bf..b8f254a991b8b7e8f704527f0d4f343a4697dfa9
2026-01-29 12:15:01 UTC to 2026-01-29 12:15:01 UTC

• Fix deprecation warning for compare_and_swap in atomics.md (Fix deprecation warning for compare_and_swap in atomics.md nomicon#519)

rust-lang/reference

12 commits in 990819b86c22bbf538c0526f0287670f3dc1a67a..addd0602c819b6526b9cc97653b0fadca395528c
2026-02-04 14:35:59 UTC to 2026-01-26 18:02:14 UTC

• const-eval.const-expr.field: make paragraph more clear (const-eval.const-expr.field: make paragraph more clear reference#2157)
• make more clear what the link target is (make more clear what the link target is reference#2156)
• Update two URLs (Update two URLs reference#2154)
• Add a chapter on divergence (Add a chapter on divergence reference#2067)
• Guarantee repr(C) union field offset (Guarantee repr(C) union field offset reference#2128)
• Reference updates for forbidding object lifetime changing pointer casts (Reference updates for forbidding object lifetime changing pointer casts reference#1951)
• Clarify only arrays undergo unsized coercion during dispatch (Clarify only arrays undergo unsized coercion during dispatch reference#2139)
• Split the textual chapter into separate char and str chapters (Split the textual chapter into separate char and str chapters reference#2145)
• Document ppc inline asm support (Document ppc inline asm support reference#2056)
• Unwrap items, expressions, patterns, and types (Unwrap items, expressions, patterns, and types reference#2141)
• undefined behavior: add missing plural in undefined.misaligned.ptr (undefined behavior: add missing plural in undefined.misaligned.ptr reference#2146)
• inline-assembly: add a space to the asm.abi-clobbers.many example (inline-assembly: add a space to the asm.abi-clobbers.many example reference#2144)

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[rustbot]

⚠️ Warning ⚠️

• Some commits in this PR modify submodules.

  If this was not intentional, see I changed a submodule on accident in the rustc dev guide.