majnemer added inline comments.

================
Comment at: lib/Driver/MSVCToolChain.cpp:481
@@ +480,3 @@
+
+  std::vector<uint8_t> VersionBlock(VersionSize);
+  if (!::GetFileVersionInfoW(ClExeWide.c_str(), 0, VersionSize,
----------------
It might be nicer to use a `SmallVector<uint8_t, sizeof(VS_FIXEDFILEINFO)>`, or 
whatever `VersionSize` typically is, here to avoid heap allocation in the 
common case.


http://reviews.llvm.org/D20136



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