diff --git a/clang/lib/Sema/SemaExprCXX.cpp b/clang/lib/Sema/SemaExprCXX.cpp
--- a/clang/lib/Sema/SemaExprCXX.cpp
+++ b/clang/lib/Sema/SemaExprCXX.cpp
@@ -7786,7 +7786,8 @@
                         Method->getType()->castAs<FunctionProtoType>()))
     return ExprError();
 
-  return CE;
+  return CheckForImmediateInvocation(MaybeBindToTemporary(CE),
+                                     CE->getMethodDecl());
 }
 
 ExprResult Sema::BuildCXXNoexceptExpr(SourceLocation KeyLoc, Expr *Operand,
diff --git a/clang/test/CodeGenCXX/cxx2a-consteval.cpp b/clang/test/CodeGenCXX/cxx2a-consteval.cpp
--- a/clang/test/CodeGenCXX/cxx2a-consteval.cpp
+++ b/clang/test/CodeGenCXX/cxx2a-consteval.cpp
@@ -210,3 +210,15 @@
   AggCtor C(i);
   return C.a + C.b;
 }
+
+struct UserConv {
+  consteval operator int() const noexcept { return 42; }
+};
+
+// EVAL-FN-LABEL: @_Z13test_UserConvv(
+// EVAL-FN-NEXT:  entry:
+// EVAL-FN-NEXT:    ret i32 42
+//
+int test_UserConv() {
+  return UserConv();
+}