Fix a bug in DebugInfo lib, extend a comment for one of the methods

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159707 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 3 insertions, 3 deletions

diff --git a/lib/DebugInfo/DWARFCompileUnit.cpp b/lib/DebugInfo/DWARFCompileUnit.cpp
index 2683990e58..6d4c7df8dc 100644
--- a/lib/DebugInfo/DWARFCompileUnit.cpp
+++ b/lib/DebugInfo/DWARFCompileUnit.cpp
@@ -239,8 +239,8 @@ DWARFCompileUnit::buildAddressRangeTable(DWARFDebugAranges *debug_aranges,
 
 const DWARFDebugInfoEntryMinimal*
 DWARFCompileUnit::getFunctionDIEForAddress(int64_t address) {
-  size_t n = extractDIEsIfNeeded(false);
-  for (size_t i = 0; i != n; i++) {
+  extractDIEsIfNeeded(false);
+  for (size_t i = 0, n = DieArray.size(); i != n; i++) {
     if (DieArray[i].addressRangeContainsAddress(this, address))
       return &DieArray[i];
   }
diff --git a/lib/DebugInfo/DWARFCompileUnit.h b/lib/DebugInfo/DWARFCompileUnit.h
index dc558da714..e8a97ec716 100644
--- a/lib/DebugInfo/DWARFCompileUnit.h
+++ b/lib/DebugInfo/DWARFCompileUnit.h
@@ -43,7 +43,7 @@ public:
                    const DWARFAbbreviationDeclarationSet *abbrevs);
 
   /// extractDIEsIfNeeded - Parses a compile unit and indexes its DIEs if it
-  /// hasn't already been done.
+  /// hasn't already been done. Returns the number of DIEs parsed at this call.
   size_t extractDIEsIfNeeded(bool cu_die_only);
   void clear();
   void dump(raw_ostream &OS);