[PATCH] D25747: [clang-tidy] Fix an assertion failure in cppcoreguidelines-pro-type-member-init.

[Haojian Wu via cfe-commits]

hokein created this revision.
hokein added a reviewer: aaron.ballman.
hokein added a subscriber: cfe-commits.
Herald added a subscriber: nemanjai.

The matcher for matching "class with default constructor" still match
some classes without default constructor, which trigger an assert at
Line 307. This patch makes the matcher more strict.


https://reviews.llvm.org/D25747

Files:
  clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
  test/clang-tidy/cppcoreguidelines-pro-type-member-init.cpp


Index: test/clang-tidy/cppcoreguidelines-pro-type-member-init.cpp
===================================================================
--- test/clang-tidy/cppcoreguidelines-pro-type-member-init.cpp
+++ test/clang-tidy/cppcoreguidelines-pro-type-member-init.cpp
@@ -450,3 +450,9 @@
   NegativeIncompleteArrayMember() {}
   char e[];
 };
+
+template <typename T> class NoCrash {
+  class B : public NoCrash {
+    template <typename U> B(U u) {}
+  };
+};
Index: clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
===================================================================
--- clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
+++ clang-tidy/cppcoreguidelines/ProTypeMemberInitCheck.cpp
@@ -27,6 +27,10 @@
 
 namespace {
 
+AST_MATCHER(CXXRecordDecl, hasDefaultConstructor) {
+  return Node.hasDefaultConstructor();
+}
+
 // Iterate over all the fields in a record type, both direct and indirect (e.g.
 // if the record contains an anonmyous struct). If OneFieldPerUnion is true and
 // the record type (or indirect field) is a union, forEachField will stop after
@@ -275,6 +279,7 @@
   Finder->addMatcher(
       cxxRecordDecl(
           isDefinition(), unless(isInstantiated()),
+          hasDefaultConstructor(),
           anyOf(has(cxxConstructorDecl(isDefaultConstructor(), isDefaulted(),
                                        unless(isImplicit()))),
                 unless(has(cxxConstructorDecl()))),


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