[clang] [clang-tools-extra] [clang-tidy] Add new check `modernize-use-designated-initializers` (PR #80541)

[Piotr Zegar via cfe-commits]

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In-Reply-To: <llvm.org/llvm/llvm-project/pull/80...@github.com>


================
@@ -0,0 +1,130 @@
+// RUN: %check_clang_tidy -std=c++17 %s modernize-use-designated-initializers 
%t
+// RUN: %check_clang_tidy -check-suffixes=,SINGLE-ELEMENT -std=c++17 %s 
modernize-use-designated-initializers %t \
+// RUN:     -- -config="{CheckOptions: [{key: 
modernize-use-designated-initializers.IgnoreSingleElementAggregates, value: 
false}]}" \
+// RUN:     --
+// RUN: %check_clang_tidy -check-suffixes=POD -std=c++17 %s 
modernize-use-designated-initializers %t \
+// RUN:     -- -config="{CheckOptions: [{key: 
modernize-use-designated-initializers.RestrictToPODTypes, value: true}]}" \
+// RUN:     --
+
+struct S1 {};
+
----------------
PiotrZSL wrote:

Support for macros is needed, tests where value is behind macro, or entire 
variable is behind macro.
Consider implementing option IgnoreMacros, like in other checks.

https://github.com/llvm/llvm-project/pull/80541
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