Update books

[rustbot]

rust-lang/reference

9 commits in afdc77bab886d4455c11247cdd32391bfab636ae..82da570bafd9efed421bdbae0f8603ede8dd308b
2026-08-08 22:04:17 UTC to 2026-07-28 18:20:15 UTC

• add c-variadic function definitions (add c-variadic function definitions reference#2177)
• Update no_mangle to use the attribute template (Update no_mangle to use the attribute template reference#1904)
• enums with fields: clarify that repr(C, int) is quite different from repr(int) (enums with fields: clarify that repr(C, int) is quite different from repr(int) reference#2227)
• aliasing rules also apply inside private fields (aliasing rules also apply inside private fields reference#2304)
• attributes: do not explain syntax in rules (attributes: do not explain syntax in rules reference#2306)
• Document prohibition on inner attribute macros (Document prohibition on inner attribute macros reference#2311)
• Use authentication for linkcheck (Use authentication for linkcheck reference#2319)
• Stabilize passing 128-bit integers via vector registers with asm! on x86 (Stabilize passing 128-bit integers via vector registers with asm! on x86 reference#2313)
• Add a rule for attribute macro outline modules (Add a rule for attribute macro outline modules reference#2310)

[rustbot]

r? @traviscross

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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.

[traviscross]

@bors r+ rollup

[rust-bors]

📌 Commit c02de72 has been approved by traviscross

It is now in the queue for this repository.