Merge pull request #20273 from hvitved/rust/attribute-in-macro-expansion

Rust: Include `getAttributeMacroExpansion` in `isInMacroExpansion`

Author: hvitved

rust/ql/lib/change-notes/2025-08-25-in-macro-expansion.md

@@ -0,0 +1,4 @@
+---
+category: minorAnalysis
+---
+* Attribute macros are now taken into account when identifying macro-expanded code. This affects the queries `rust/unused-variable` and `rust/unused-value`, which exclude results in macro-expanded code.

rust/ql/lib/codeql/rust/elements/internal/MacroCallImpl.qll

@@ -19,6 +19,8 @@ module Impl {
     or
     n = root.(Adt).getDeriveMacroExpansion(_)
     or
+    n = root.(Item).getAttributeMacroExpansion()
+    or
     isInMacroExpansion(root, n.getParentNode())
   }