[clang] [Clang][Sema] fix crash of attribute transform (PR #78088)

[Aaron Ballman via cfe-commits]

================
@@ -7081,10 +7085,10 @@ QualType 
TreeTransform<Derived>::TransformAttributedType(
   // FIXME: dependent operand expressions?
   if (getDerived().AlwaysRebuild() ||
       modifiedType != oldType->getModifiedType()) {
-    // TODO: this is really lame; we should really be rebuilding the
-    // equivalent type from first principles.
-    QualType equivalentType
-      = getDerived().TransformType(oldType->getEquivalentType());
+    TypeLocBuilder AuxiliaryTLB;
+    AuxiliaryTLB.reserve(TL.getFullDataSize());
----------------
AaronBallman wrote:

Ah, you're right, we do still need to do that dance it seems.

https://github.com/llvm/llvm-project/pull/78088
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