C++: Add change note.

MathiasVP · MathiasVP · commit d36350aca492 · 2026-02-24T12:48:45.000Z
diff --git a/cpp/ql/lib/change-notes/2026-02-24-barrier-guards.md b/cpp/ql/lib/change-notes/2026-02-24-barrier-guards.md
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+---
+category: breaking
+---
+* CodeQL version 2.24.2 accidentially introduced a syntactical breaking change to `BarrierGuard<...>::getAnIndirectBarrierNode` and `InstructionBarrierGuard<...>::getAnIndirectBarrierNode`. These breaking changes have now been reverted so that the original code compiles again.

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 +---
 +category: breaking
 +---
 +* CodeQL version 2.24.2 accidentially introduced a syntactical breaking change to `BarrierGuard<...>::getAnIndirectBarrierNode` and `InstructionBarrierGuard<...>::getAnIndirectBarrierNode`. These breaking changes have now been reverted so that the original code compiles again.