[PATCH] D23047: pdbdump: Do not treat stream 0 pages as allocated pages.

[Rui Ueyama via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rL277545: pdbdump: Do not treat stream 0 pages as allocated pages. (authored by ruiu).

Changed prior to commit:
  https://reviews.llvm.org/D23047?vs=66587&id=66592#toc

Repository:
  rL LLVM

https://reviews.llvm.org/D23047

Files:
  llvm/trunk/tools/llvm-pdbdump/LLVMOutputStyle.cpp

Index: llvm/trunk/tools/llvm-pdbdump/LLVMOutputStyle.cpp
===================================================================
--- llvm/trunk/tools/llvm-pdbdump/LLVMOutputStyle.cpp
+++ llvm/trunk/tools/llvm-pdbdump/LLVMOutputStyle.cpp
@@ -303,14 +303,16 @@
 
   recordKnownUsedPage(PS, File.getBlockMapIndex()); // Stream Table
 
-  for (auto DB : File.getDirectoryBlockArray()) {
+  for (auto DB : File.getDirectoryBlockArray())
     recordKnownUsedPage(PS, DB);
-  }
-  for (auto &SE : File.getStreamMap()) {
-    for (auto &S : SE) {
+
+  // Record pages used by streams. Note that pages for stream 0
+  // are considered being unused because that's what MSVC tools do.
+  // Stream 0 doesn't contain actual data, so it makes some sense,
+  // though it's a bit confusing to us.
+  for (auto &SE : File.getStreamMap().drop_front(1))
+    for (auto &S : SE)
       recordKnownUsedPage(PS, S);
-    }
-  }
 
   dumpBitVector("Msf Free Pages", FPM);
   dumpBitVector("Orphaned Pages", PS.OrphanedPages);


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