[clang-tidy] Handle anonymous structs/unions in member init checks.

Use getAnyMember() instead of getMember() to avoid crash on anonymous
structs/unions.
Don't warn about initializing members of an anonymous union.

Fixes PR32966.

Reviewed by alexfh.

llvm-svn: 309668

1 files changed, 10 insertions, 0 deletions

diff --git a/clang-tools-extra/test/clang-tidy/modernize-use-default-member-init.cpp b/clang-tools-extra/test/clang-tidy/modernize-use-default-member-init.cpp
index 5b9b93c42a7..0ed65df3ed6 100644
--- a/clang-tools-extra/test/clang-tidy/modernize-use-default-member-init.cpp
+++ b/clang-tools-extra/test/clang-tidy/modernize-use-default-member-init.cpp
@@ -173,6 +173,16 @@ struct PositiveString {
   // CHECK-FIXES: const char *s{"foo"};
 };
 
+struct PositiveStruct {
+  PositiveStruct() : s(7) {}
+  // CHECK-FIXES: PositiveStruct()  {}
+  struct {
+    int s;
+    // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: use default member initializer for 's'
+    // CHECK-FIXES: int s{7};
+  };
+};
+
 template <typename T>
 struct NegativeTemplate {
     NegativeTemplate() : t() {}