[pdb] Print out some more info when dumping a raw stream.
We have various command line options that print the type of a
stream, the size of a stream, etc but nowhere that it can all be
viewed together.
Since a previous patch introduced the ability to dump the bytes
of a stream, this seems like a good place to present a full view
of the stream's properties including its size, what kind of data
it represents, and the blocks it occupies. So I added the
ability to print that information to the -stream-data command
line option.
llvm-svn: 281077
diff --git a/llvm/lib/DebugInfo/MSF/MappedBlockStream.cpp b/llvm/lib/DebugInfo/MSF/MappedBlockStream.cpp
index bbcfbfc..403c02b 100644
--- a/llvm/lib/DebugInfo/MSF/MappedBlockStream.cpp
+++ b/llvm/lib/DebugInfo/MSF/MappedBlockStream.cpp
@@ -200,6 +200,10 @@
bool MappedBlockStream::tryReadContiguously(uint32_t Offset, uint32_t Size,
ArrayRef<uint8_t> &Buffer) const {
+ if (Size == 0) {
+ Buffer = ArrayRef<uint8_t>();
+ return true;
+ }
// Attempt to fulfill the request with a reference directly into the stream.
// This can work even if the request crosses a block boundary, provided that
// all subsequent blocks are contiguous. For example, a 10k read with a 4k