[clang] [clang-tools-extra] [clang] Make `InitListExpr::isExplicit()` work (PR #195175)

[Andrey Ali Khan Bolshakov via cfe-commits]

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@@ -8100,7 +8100,8 @@ static Expr *BuildExpressionFromIntegralTemplateArgumentValue(
 static Expr *BuildExpressionFromNonTypeTemplateArgumentValue(
     Sema &S, QualType T, const APValue &Val, SourceLocation Loc) {
   auto MakeInitList = [&](ArrayRef<Expr *> Elts) -> Expr * {
-    auto *ILE = new (S.Context) InitListExpr(S.Context, Loc, Elts, Loc);
+    auto *ILE = new (S.Context)
+        InitListExpr(S.Context, Loc, Elts, Loc, /*isExplicit=*/false);
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bolshakov-a wrote:

For vector types, there may be explicit braces, but at the argument spelling site, not at the substitution site, of course.

https://github.com/llvm/llvm-project/pull/195175