[Concepts] Fix ast dump for immediately declared constraint.
Reviewed By: nridge
Differential Revision: https://reviews.llvm.org/D84461
diff --git a/clang/test/AST/ast-dump-concepts.cpp b/clang/test/AST/ast-dump-concepts.cpp
new file mode 100644
index 0000000..530c1ba
--- /dev/null
+++ b/clang/test/AST/ast-dump-concepts.cpp
@@ -0,0 +1,19 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-unknown -std=c++2a -ast-dump -ast-dump-filter Foo %s | FileCheck -strict-whitespace %s
+
+// Test with serialization:
+// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-unknown -emit-pch -o %t %s
+// RUN: %clang_cc1 -x c++ -std=c++20 -triple x86_64-unknown-unknown -include-pch %t \
+// RUN: -ast-dump-all -ast-dump-filter Foo /dev/null \
+// RUN: | FileCheck --strict-whitespace %s
+
+template <typename T, typename U>
+concept binary_concept = true;
+
+template <typename T>
+struct Foo {
+ // CHECK: TemplateTypeParmDecl {{.*}} referenced Concept {{.*}} 'binary_concept'
+ // CHECK-NEXT: |-ConceptSpecializationExpr {{.*}} 'bool'
+ // CHECK-NEXT: `-TemplateArgument {{.*}} type 'int'
+ template <binary_concept<int> R>
+ Foo(R);
+};