r344010 - [Index] Use locations to uniquify function-scope BindingDecl USR

[Fangrui Song via cfe-commits]

Author: maskray
Date: Mon Oct  8 18:02:56 2018
New Revision: 344010

URL: http://llvm.org/viewvc/llvm-project?rev=344010&view=rev
Log:
[Index] Use locations to uniquify function-scope BindingDecl USR

Summary:
This makes BindingDecl's of the same name have different USRs, so that references can be correctly attributed.

    int a[1] = {};
    { auto [x] = a; x; }
    { auto [x] = a; x; }

Reviewers: akyrtzi, arphaman, rsmith, hokein

Reviewed By: hokein

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D52445

Modified:
    cfe/trunk/lib/Index/USRGeneration.cpp
    cfe/trunk/test/Index/Core/index-source.cpp

Modified: cfe/trunk/lib/Index/USRGeneration.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Index/USRGeneration.cpp?rev=344010&r1=344009&r2=344010&view=diff
==============================================================================
--- cfe/trunk/lib/Index/USRGeneration.cpp (original)
+++ cfe/trunk/lib/Index/USRGeneration.cpp Mon Oct  8 18:02:56 2018
@@ -97,6 +97,7 @@ public:
   void VisitTypedefDecl(const TypedefDecl *D);
   void VisitTemplateTypeParmDecl(const TemplateTypeParmDecl *D);
   void VisitVarDecl(const VarDecl *D);
+  void VisitBindingDecl(const BindingDecl *D);
   void VisitNonTypeTemplateParmDecl(const NonTypeTemplateParmDecl *D);
   void VisitTemplateTemplateParmDecl(const TemplateTemplateParmDecl *D);
   void VisitUnresolvedUsingValueDecl(const UnresolvedUsingValueDecl *D);
@@ -334,6 +335,12 @@ void USRGenerator::VisitVarDecl(const Va
   }
 }
 
+void USRGenerator::VisitBindingDecl(const BindingDecl *D) {
+  if (isLocal(D) && GenLoc(D, /*IncludeOffset=*/true))
+    return;
+  VisitNamedDecl(D);
+}
+
 void USRGenerator::VisitNonTypeTemplateParmDecl(
                                         const NonTypeTemplateParmDecl *D) {
   GenLoc(D, /*IncludeOffset=*/true);

Modified: cfe/trunk/test/Index/Core/index-source.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Index/Core/index-source.cpp?rev=344010&r1=344009&r2=344010&view=diff
==============================================================================
--- cfe/trunk/test/Index/Core/index-source.cpp (original)
+++ cfe/trunk/test/Index/Core/index-source.cpp Mon Oct  8 18:02:56 2018
@@ -1,4 +1,5 @@
 // RUN: c-index-test core -print-source-symbols -- %s -std=c++1z -target x86_64-apple-macosx10.7 | FileCheck %s
+// RUN: c-index-test core -print-source-symbols -include-locals -- %s -std=c++1z -target x86_64-apple-macosx10.7 | FileCheck -check-prefix=LOCAL %s
 
 // CHECK: [[@LINE+1]]:7 | class/C++ | Cls | [[Cls_USR:.*]] | <no-cgname> | Def | rel: 0
 class Cls { public:
@@ -493,6 +494,7 @@ void localStructuredBindingAndRef() {
 // CHECK: [[@LINE-1]]:69 | variable/C++ | structuredBinding2 | c:@N at cpp17structuredBinding@structuredBinding2 | <no-cgname> | Ref,Read,RelCont | rel: 1
 // CHECK-NEXT: RelCont | localStructuredBindingAndRef | c:@N at cpp17structuredBinding@F at localStructuredBindingAndRef#
 // CHECK-NOT: localBinding
+// LOCAL: [[@LINE-4]]:9 | variable(local)/C++ | localBinding1 | c:index-source.cpp at 25382@N at cpp17structuredBinding@F at localStructuredBindingAndRef#@localBinding1
 }
 
 }