[PATCH] D156693: [clang][ASTImporter]Skip check friend template declaration in VisitClassTemplateDecl

[Qizhi Hu via Phabricator via cfe-commits]

jcsxky updated this revision to Diff 546309.
jcsxky added a comment.

update patch for pass unittests and test


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D156693/new/

https://reviews.llvm.org/D156693

Files:
  clang/lib/AST/ASTImporter.cpp
  clang/test/Analysis/Inputs/ctu-friend-template-other.cpp
  clang/test/Analysis/Inputs/ctu-friend-template.cpp.externalDefMap-dump.txt
  clang/test/Analysis/Inputs/ctu-friend-template.h
  clang/test/Analysis/ctu-friend-template.cpp


Index: clang/test/Analysis/ctu-friend-template.cpp
===================================================================
--- /dev/null
+++ clang/test/Analysis/ctu-friend-template.cpp
@@ -0,0 +1,21 @@
+// RUN: rm -rf %t && mkdir %t
+// RUN: mkdir -p %t/ctudir
+// RUN: %clang_cc1 -std=c++14 -triple x86_64-pc-linux-gnu \
+// RUN:   -emit-pch -o %t/ctudir/ctu-friend-template-other.cpp.ast %S/Inputs/ctu-friend-template-other.cpp
+// RUN: cp %S/Inputs/ctu-friend-template.cpp.externalDefMap-dump.txt %t/ctudir/externalDefMap.txt
+// RUN: %clang_analyze_cc1 -std=c++14 -triple x86_64-pc-linux-gnu \
+// RUN:   -analyzer-checker=core,debug.ExprInspection \
+// RUN:   -analyzer-config experimental-enable-naive-ctu-analysis=true \
+// RUN:   -analyzer-config ctu-dir=%t/ctudir \
+// RUN:   -Werror=ctu \
+// RUN:   -verify %s
+
+// CHECK: CTU loaded AST file
+
+#include "Inputs/ctu-friend-template.h"
+
+void bar();
+
+int main(){
+	bar(); // expected-no-diagnostics
+}
Index: clang/test/Analysis/Inputs/ctu-friend-template.h
===================================================================
--- /dev/null
+++ clang/test/Analysis/Inputs/ctu-friend-template.h
@@ -0,0 +1,20 @@
+namespace __1{
+
+template<class T, T U>
+class A;
+
+template<class T, T U>
+class A{
+public:
+	template<class P, P Q>
+	friend class A;
+
+	A(T x):x(x){}
+	
+	void foo(){}
+	
+private:
+	T x;
+};
+
+}
Index: clang/test/Analysis/Inputs/ctu-friend-template.cpp.externalDefMap-dump.txt
===================================================================
--- /dev/null
+++ clang/test/Analysis/Inputs/ctu-friend-template.cpp.externalDefMap-dump.txt
@@ -0,0 +1 @@
+9:c:@F at bar# ctu-friend-template-other.cpp.ast
Index: clang/test/Analysis/Inputs/ctu-friend-template-other.cpp
===================================================================
--- /dev/null
+++ clang/test/Analysis/Inputs/ctu-friend-template-other.cpp
@@ -0,0 +1,6 @@
+#include "ctu-friend-template.h"
+
+void bar(){
+	__1::A<int,3> a1(0);
+	a1.foo();
+}
Index: clang/lib/AST/ASTImporter.cpp
===================================================================
--- clang/lib/AST/ASTImporter.cpp
+++ clang/lib/AST/ASTImporter.cpp
@@ -44,6 +44,7 @@
 #include "clang/AST/TypeLoc.h"
 #include "clang/AST/TypeVisitor.h"
 #include "clang/AST/UnresolvedSet.h"
+#include "clang/AST/ParentMapContext.h"
 #include "clang/Basic/Builtins.h"
 #include "clang/Basic/ExceptionSpecificationType.h"
 #include "clang/Basic/FileManager.h"
@@ -5812,6 +5813,11 @@
       if (FoundTemplate) {
         if (!hasSameVisibilityContextAndLinkage(FoundTemplate, D))
           continue;
+        auto Parents = FoundDecl->getASTContext().getParents(*FoundDecl);
+        if (!Parents.empty() && nullptr != Parents.begin()->get<FriendDecl>() &&
+            FoundTemplate->getName() == D->getName() &&
+            !IsStructuralMatch(D, FoundTemplate, false))
+          continue;
 
         if (IsStructuralMatch(D, FoundTemplate)) {
           ClassTemplateDecl *TemplateWithDef =


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