danlark created this revision.
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danlark requested review of this revision.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.
In sorting elements can compare with themselves and sometimes assert further 
down the line was triggered


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D155809

Files:
  clang/lib/AST/VTableBuilder.cpp


Index: clang/lib/AST/VTableBuilder.cpp
===================================================================
--- clang/lib/AST/VTableBuilder.cpp
+++ clang/lib/AST/VTableBuilder.cpp
@@ -1560,6 +1560,7 @@
   std::stable_sort(
       NewImplicitVirtualFunctions.begin(), NewImplicitVirtualFunctions.end(),
       [](const CXXMethodDecl *A, const CXXMethodDecl *B) {
+        if (A == B) return false;
         if (A->isCopyAssignmentOperator() != B->isCopyAssignmentOperator())
           return A->isCopyAssignmentOperator();
         if (A->isMoveAssignmentOperator() != B->isMoveAssignmentOperator())


Index: clang/lib/AST/VTableBuilder.cpp
===================================================================
--- clang/lib/AST/VTableBuilder.cpp
+++ clang/lib/AST/VTableBuilder.cpp
@@ -1560,6 +1560,7 @@
   std::stable_sort(
       NewImplicitVirtualFunctions.begin(), NewImplicitVirtualFunctions.end(),
       [](const CXXMethodDecl *A, const CXXMethodDecl *B) {
+        if (A == B) return false;
         if (A->isCopyAssignmentOperator() != B->isCopyAssignmentOperator())
           return A->isCopyAssignmentOperator();
         if (A->isMoveAssignmentOperator() != B->isMoveAssignmentOperator())
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