[clang] Suppress errors from well-formed-testing type traits in SFINAE contexts (PR #135390)

[Aaron Puchert via cfe-commits]

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@@ -12240,16 +12240,16 @@ class Sema final : public SemaBase {
     bool PrevLastDiagnosticIgnored;
 
   public:
-    explicit SFINAETrap(Sema &SemaRef, bool AccessCheckingSFINAE = false)
+    explicit SFINAETrap(Sema &SemaRef, bool TestWellformedSFINAE = false)
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aaronpuchert wrote:

Adding a comment makes sense to me. I'm open to a different name, but I started with "well-formed" because that's how the standard calls it. "Valid" sounds fine, but it doesn't seem to be what the standard calls it.

https://github.com/llvm/llvm-project/pull/135390