# Extra Clang Tools 18.1.8 documentation

## clang-tidy - modernize-make-shared

# modernize-make-shared

This check finds the creation of `std::shared_ptr` objects by explicitly calling the constructor and a `new` expression, and replaces it with a call to `std::make_shared`.

    auto my_ptr = std::shared_ptr<MyPair>(new MyPair(1, 2));

    // becomes

    auto my_ptr = std::make_shared<MyPair>(1, 2);

This check also finds calls to `std::shared_ptr::reset()` with a `new` expression, and replaces it with a call to `std::make_shared`.

    my_ptr.reset(new MyPair(1, 2));

    // becomes

    my_ptr = std::make_shared<MyPair>(1, 2);

## Options

MakeSmartPtrFunction

  A string specifying the name of make-shared-ptr function. Default is std::make_shared.

MakeSmartPtrFunctionHeader

  A string specifying the corresponding header of make-shared-ptr function. Default is memory.

IncludeStyle

  A string specifying which include-style is used, llvm or google. Default is llvm.

IgnoreMacros

  If set to true, the check will not give warnings inside macros. Default is true.

IgnoreDefaultInitialization

  If set to non-zero, the check does not suggest edits that will transform default initialization into value initialization, as this can cause performance regressions. Default is 1.