[clang] [clang] Diagnose VLA types from an enclosing function in local classes and blocks (PR #229697)

Ivan Ugryumov via cfe-commits cfe-commits at lists.llvm.org
Sun Oct 18 04:16:03 PDT 2026


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@@ -2370,6 +2370,14 @@ QualType Sema::BuildArrayType(QualType T, ArraySizeModifier ASM,
     }
   }
 
+  // Remember where the bound of a VLA is evaluated. Bounds in a function
+  // prototype are evaluated in that function, which doesn't exist yet;
+  // those are not recorded and never diagnosed.
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Servall4 wrote:

Added fixme tests for this

https://github.com/llvm/llvm-project/pull/229697


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