[clang-tools-extra] [clang-tidy] Fix failing test after #80864 (PR #81171)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang-tools-extra

Author: Krystian Stasiowski (sdkrystian)

<details>
<summary>Changes</summary>

The following test case in `clang-tools-extra/test/clang-tidy/infrastructure/diagnostic.cpp` is failing:
```cpp
#ifdef PR64602 // Should not crash
template <class T = void>
struct S
{
    auto foo(auto);
};

template <>
auto S<>::foo(auto)
{
    return 1;
}
// CHECK8: error: template parameter list matching the non-templated nested type 'S<>' should be empty ('template<>') [clang-diagnostic-error]
#endif
```

#<!-- -->80864 fixes a bug where we would (incorrectly) append invented template parameters to empty template parameter lists, which causes this test to fail.

 

---
Full diff: https://github.com/llvm/llvm-project/pull/81171.diff


1 Files Affected:

- (modified) clang-tools-extra/test/clang-tidy/infrastructure/diagnostic.cpp (+2-1) 


``````````diff
diff --git a/clang-tools-extra/test/clang-tidy/infrastructure/diagnostic.cpp b/clang-tools-extra/test/clang-tidy/infrastructure/diagnostic.cpp
index 547f634a101c58..d0efc5ca763753 100644
--- a/clang-tools-extra/test/clang-tidy/infrastructure/diagnostic.cpp
+++ b/clang-tools-extra/test/clang-tidy/infrastructure/diagnostic.cpp
@@ -68,5 +68,6 @@ auto S<>::foo(auto)
 {
     return 1;
 }
-// CHECK8: error: template parameter list matching the non-templated nested type 'S<>' should be empty ('template<>') [clang-diagnostic-error]
+// CHECK8: error: conflicting types for 'foo' [clang-diagnostic-error]
+// CHECK8: note: previous declaration is here
 #endif

``````````

</details>


https://github.com/llvm/llvm-project/pull/81171