[clang-tools-extra] [clang-tidy] Add modernize-default-arg-braced-init check (PR #203474)

via cfe-commits cfe-commits at lists.llvm.org
Fri Jun 12 01:03:08 PDT 2026


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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp,h -- clang-tools-extra/clang-tidy/modernize/DefaultArgBracedInitCheck.cpp clang-tools-extra/clang-tidy/modernize/DefaultArgBracedInitCheck.h clang-tools-extra/test/clang-tidy/checkers/modernize/default-arg-braced-init.cpp clang-tools-extra/clang-tidy/modernize/ModernizeTidyModule.cpp --diff_from_common_commit
``````````

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The reproduction instructions above might return results for more than one PR
in a stack if you are using a stacked PR workflow. You can limit the results by
changing `origin/main` to the base branch/commit you want to compare against.
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View the diff from clang-format here.
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``````````diff
diff --git a/clang-tools-extra/clang-tidy/modernize/DefaultArgBracedInitCheck.cpp b/clang-tools-extra/clang-tidy/modernize/DefaultArgBracedInitCheck.cpp
index 27d9043b3..5daba767c 100644
--- a/clang-tools-extra/clang-tidy/modernize/DefaultArgBracedInitCheck.cpp
+++ b/clang-tools-extra/clang-tidy/modernize/DefaultArgBracedInitCheck.cpp
@@ -9,20 +9,19 @@
 #include "DefaultArgBracedInitCheck.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
 
-
 using namespace clang::ast_matchers;
 
 namespace clang::tidy::modernize {
 
 void DefaultArgBracedInitCheck::registerMatchers(MatchFinder *Finder) {
-
-Finder->addMatcher(
-    parmVarDecl(hasInitializer(cxxTemporaryObjectExpr(
-                    argumentCountIs(0),
-                    unless(hasDeclaration(cxxConstructorDecl(isExplicit())))
-                ).bind("ctor")))
-        .bind("param"),
-    this);
+  Finder->addMatcher(
+      parmVarDecl(hasInitializer(cxxTemporaryObjectExpr(
+                                     argumentCountIs(0),
+                                     unless(hasDeclaration(
+                                         cxxConstructorDecl(isExplicit()))))
+                                     .bind("ctor")))
+          .bind("param"),
+      this);
 }
 
 void DefaultArgBracedInitCheck::check(const MatchFinder::MatchResult &Result) {

``````````

</details>


https://github.com/llvm/llvm-project/pull/203474


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