commit f4f1b266fd83c819ea2cf7cbd9bcd377d95c4eb6
author Benjamin Kramer <benny.kra@googlemail.com> Wed Sep 16 11:43:12 2009 +0000
committer Benjamin Kramer <benny.kra@googlemail.com> Wed Sep 16 11:43:12 2009 +0000
tree ac54fdfdc460c7e5d70788ab00ece473ec2fd87a
parent 923327267949b537d7a2fdad5b7a919bd90ce085

Don't sort the vector when it is empty. This should fix some expensive checking
failures.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82040 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/MachineModuleInfoImpls.cpp

diff --git a/lib/CodeGen/MachineModuleInfoImpls.cpp b/lib/CodeGen/MachineModuleInfoImpls.cpp
index 10de1de..7a62929 100644
--- a/lib/CodeGen/MachineModuleInfoImpls.cpp
+++ b/lib/CodeGen/MachineModuleInfoImpls.cpp
@@ -38,7 +38,8 @@
 MachineModuleInfoMachO::GetSortedStubs(const DenseMap<const MCSymbol*, 
                                                       const MCSymbol*> &Map) {
   MachineModuleInfoMachO::SymbolListTy List(Map.begin(), Map.end());
-  qsort(&List[0], List.size(), sizeof(List[0]), SortSymbolPair);
+  if (!List.empty())
+    qsort(&List[0], List.size(), sizeof(List[0]), SortSymbolPair);
   return List;
 }