[analyzer] Include the bug uniqueing location in the issue_hash.

The issue here is that if we have 2 leaks reported at the same line for
which we cannot print the corresponding region info, they will get
treated as the same by issue_hash+description. We need to AUGMENT the
issue_hash with the allocation info to differentiate the two issues.

Add the "hash" (offset from the beginning of a function) representing
allocation site to solve the issue.

We might want to generalize solution in the future when we decide to
track more than just the 2 locations from the diagnostics.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@171825 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 1 deletions

diff --git a/lib/StaticAnalyzer/Core/PathDiagnostic.cpp b/lib/StaticAnalyzer/Core/PathDiagnostic.cpp
index 614a5a5679..ec2e1885f5 100644
--- a/lib/StaticAnalyzer/Core/PathDiagnostic.cpp
+++ b/lib/StaticAnalyzer/Core/PathDiagnostic.cpp
@@ -107,12 +107,16 @@ PathDiagnostic::~PathDiagnostic() {}
 
 PathDiagnostic::PathDiagnostic(const Decl *declWithIssue,
                                StringRef bugtype, StringRef verboseDesc,
-                               StringRef shortDesc, StringRef category)
+                               StringRef shortDesc, StringRef category,
+                               PathDiagnosticLocation LocationToUnique,
+                               const Decl *DeclToUnique)
   : DeclWithIssue(declWithIssue),
     BugType(StripTrailingDots(bugtype)),
     VerboseDesc(StripTrailingDots(verboseDesc)),
     ShortDesc(StripTrailingDots(shortDesc)),
     Category(StripTrailingDots(category)),
+    UniqueingLoc(LocationToUnique),
+    UniqueingDecl(DeclToUnique),
     path(pathImpl) {}
 
 void PathDiagnosticConsumer::anchor() { }