clang-tidy: add IgnoreMacros option to modernize-use-default-member-init

Summary:
And also enable it by default to be consistent with e.g.
modernize-use-using.

This helps e.g. when running this check on cppunit client code where the
macro is provided by the system, so there is no easy way to modify it.

Reviewers: alexfh, malcolm.parsons

Reviewed By: malcolm.parsons

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D32945

llvm-svn: 302429

1 files changed, 18 insertions, 0 deletions

diff --git a/clang-tools-extra/test/clang-tidy/modernize-use-default-member-init-macros.cpp b/clang-tools-extra/test/clang-tidy/modernize-use-default-member-init-macros.cpp
new file mode 100644
index 00000000000..5b366b57d11
--- /dev/null
+++ b/clang-tools-extra/test/clang-tidy/modernize-use-default-member-init-macros.cpp
@@ -0,0 +1,18 @@
+// RUN: %check_clang_tidy %s modernize-use-default-member-init %t -- \
+// RUN:   -config="{CheckOptions: [{key: modernize-use-default-member-init.IgnoreMacros, value: 0}]}" \
+// RUN:   -- -std=c++11
+
+#define MACRO() \
+  struct S { \
+    void *P; \
+    S() : P(nullptr) {} \
+  };
+
+MACRO();
+// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use default member initializer for 'P'
+
+struct S2 {
+  void *P;
+  // CHECK-MESSAGES: :[[@LINE-1]]:9: warning: use default member initializer for 'P'
+  S2() : P(nullptr) {}
+};