[PDB] Validate superblock addresses

- Validate the address of the block map.
- Validate the address of the free block map.

llvm-svn: 290053

1 files changed, 1 insertions, 0 deletions

diff --git a/llvm/unittests/DebugInfo/PDB/MSFBuilderTest.cpp b/llvm/unittests/DebugInfo/PDB/MSFBuilderTest.cpp
index bc1ec522fb4..5f2f0c271e9 100644
--- a/llvm/unittests/DebugInfo/PDB/MSFBuilderTest.cpp
+++ b/llvm/unittests/DebugInfo/PDB/MSFBuilderTest.cpp
@@ -30,6 +30,7 @@ protected:
     ::memset(&SB, 0, sizeof(SB));
 
     ::memcpy(SB.MagicBytes, msf::Magic, sizeof(msf::Magic));
+    SB.FreeBlockMapBlock = 1;
     SB.BlockMapAddr = 1;
     SB.BlockSize = 4096;
     SB.NumDirectoryBytes = 0;