1 files changed, 17 insertions, 3 deletions

diff --git a/contrib/llvm/lib/DebugInfo/PDB/Native/ModuleDebugStream.cpp b/contrib/llvm/lib/DebugInfo/PDB/Native/ModuleDebugStream.cpp
index 2e1f61c7a25d..8c97f4a012f0 100644
--- a/contrib/llvm/lib/DebugInfo/PDB/Native/ModuleDebugStream.cpp
+++ b/contrib/llvm/lib/DebugInfo/PDB/Native/ModuleDebugStream.cpp
@@ -11,7 +11,9 @@
 #include "llvm/ADT/iterator_range.h"
 #include "llvm/DebugInfo/CodeView/CodeView.h"
 #include "llvm/DebugInfo/CodeView/DebugChecksumsSubsection.h"
+#include "llvm/DebugInfo/CodeView/SymbolDeserializer.h"
 #include "llvm/DebugInfo/CodeView/SymbolRecord.h"
+#include "llvm/DebugInfo/CodeView/SymbolRecordHelpers.h"
 #include "llvm/DebugInfo/PDB/Native/DbiModuleDescriptor.h"
 #include "llvm/DebugInfo/PDB/Native/RawError.h"
 #include "llvm/Support/BinaryStreamReader.h"
@@ -47,7 +49,8 @@ Error ModuleDebugStreamRef::reload() {
 
   if (auto EC = Reader.readInteger(Signature))
     return EC;
-  if (auto EC = Reader.readSubstream(SymbolsSubstream, SymbolSize - 4))
+  Reader.setOffset(0);
+  if (auto EC = Reader.readSubstream(SymbolsSubstream, SymbolSize))
     return EC;
   if (auto EC = Reader.readSubstream(C11LinesSubstream, C11Size))
     return EC;
@@ -55,8 +58,8 @@ Error ModuleDebugStreamRef::reload() {
     return EC;
 
   BinaryStreamReader SymbolReader(SymbolsSubstream.StreamData);
-  if (auto EC =
-          SymbolReader.readArray(SymbolArray, SymbolReader.bytesRemaining()))
+  if (auto EC = SymbolReader.readArray(
+          SymbolArray, SymbolReader.bytesRemaining(), sizeof(uint32_t)))
     return EC;
 
   BinaryStreamReader SubsectionsReader(C13LinesSubstream.StreamData);
@@ -76,6 +79,11 @@ Error ModuleDebugStreamRef::reload() {
   return Error::success();
 }
 
+const codeview::CVSymbolArray
+ModuleDebugStreamRef::getSymbolArrayForScope(uint32_t ScopeBegin) const {
+  return limitSymbolArrayToScope(SymbolArray, ScopeBegin);
+}
+
 BinarySubstreamRef ModuleDebugStreamRef::getSymbolsSubstream() const {
   return SymbolsSubstream;
 }
@@ -97,6 +105,12 @@ ModuleDebugStreamRef::symbols(bool *HadError) const {
   return make_range(SymbolArray.begin(HadError), SymbolArray.end());
 }
 
+CVSymbol ModuleDebugStreamRef::readSymbolAtOffset(uint32_t Offset) const {
+  auto Iter = SymbolArray.at(Offset);
+  assert(Iter != SymbolArray.end());
+  return *Iter;
+}
+
 iterator_range<ModuleDebugStreamRef::DebugSubsectionIterator>
 ModuleDebugStreamRef::subsections() const {
   return make_range(Subsections.begin(), Subsections.end());