[clang] [clang] Warn on mismatched RequiresCapability attributes (PR #67520)

[Aaron Puchert via cfe-commits]

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@@ -2263,6 +2265,27 @@ static bool neverReturns(const CFGBlock *B) {
   return false;
 }
 
+void ThreadSafetyAnalyzer::checkMismatchedFunctionAttrs(const NamedDecl *ND) {
+  auto collectCapabilities = [&](const Decl *D) {
+    CapExprSet Caps;
+    for (const auto *A : D->specific_attrs<RequiresCapabilityAttr>()) {
+      for (const Expr *E : A->args())
+        Caps.push_back_nodup(SxBuilder.translateAttrExpr(E, nullptr));
+    }
+    return Caps;
+  };
+
+  auto NDArgs = collectCapabilities(ND);
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aaronpuchert wrote:

```suggestion
  CapExprSet NDArgs = collectCapabilities(ND);
```
Same below.

https://github.com/llvm/llvm-project/pull/67520