| BCO# | GHC.Exts | 
| between | Text.ParserCombinators.ReadP | 
| bit | Data.Bits, Foreign, Foreign.Safe | 
| bitDefault | Data.Bits, Foreign, Foreign.Safe | 
| bITMAP_BITS_SHIFT | GHC.Constants | 
| Bits | Data.Bits, Foreign, Foreign.Safe | 
| bitSize | Data.Bits, Foreign, Foreign.Safe | 
| block | Control.Exception.Base, Control.Exception | 
| BlockBuffering | GHC.IO.Handle, System.IO | 
| blocked | Control.Exception.Base, Control.Exception | 
| BlockedIndefinitelyOnMVar |  | 
| 1 (Type/Class) | Control.Exception.Base, Control.Exception | 
| 2 (Data Constructor) | Control.Exception.Base, Control.Exception | 
| BlockedIndefinitelyOnSTM |  | 
| 1 (Type/Class) | Control.Exception.Base, Control.Exception | 
| 2 (Data Constructor) | Control.Exception.Base, Control.Exception | 
| BlockedOnBlackHole | GHC.Conc.Sync, GHC.Conc | 
| BlockedOnException | GHC.Conc.Sync, GHC.Conc | 
| BlockedOnForeignCall | GHC.Conc.Sync, GHC.Conc | 
| BlockedOnMVar | GHC.Conc.Sync, GHC.Conc | 
| BlockedOnOther | GHC.Conc.Sync, GHC.Conc | 
| BlockedOnSTM | GHC.Conc.Sync, GHC.Conc | 
| BlockReason | GHC.Conc.Sync, GHC.Conc | 
| bLOCKS_PER_MBLOCK | GHC.Constants | 
| bLOCK_SIZE | GHC.Constants | 
| bLOCK_SIZE_W | GHC.Constants | 
| Bool | Data.Bool, Prelude | 
| Bounded | Prelude | 
| bracket | Control.Exception.Base, Control.Exception | 
| bracketOnError | Control.Exception.Base, Control.Exception | 
| bracket_ | Control.Exception.Base, Control.Exception | 
| break | Data.List, Prelude | 
| breakpoint | GHC.Exts | 
| breakpointCond | GHC.Exts | 
| Buffer |  | 
| 1 (Type/Class) | GHC.IO.Buffer | 
| 2 (Data Constructor) | GHC.IO.Buffer | 
| bufferAdd | GHC.IO.Buffer | 
| bufferAdjustL | GHC.IO.Buffer | 
| bufferAvailable | GHC.IO.Buffer | 
| BufferCodec |  | 
| 1 (Type/Class) | GHC.IO.Encoding.Types, GHC.IO.Encoding | 
| 2 (Data Constructor) | GHC.IO.Encoding.Types, GHC.IO.Encoding | 
| BufferedIO | GHC.IO.BufferedIO | 
| bufferElems | GHC.IO.Buffer | 
| BufferMode | GHC.IO.Handle, System.IO | 
| bufferRemove | GHC.IO.Buffer | 
| BufferState | GHC.IO.Buffer | 
| bufL | GHC.IO.Buffer | 
| bufR | GHC.IO.Buffer | 
| bufRaw | GHC.IO.Buffer | 
| bufSize | GHC.IO.Buffer | 
| bufState | GHC.IO.Buffer | 
| build | GHC.Exts | 
| ByteArray# | GHC.Exts | 
| byteArrayContents# | GHC.Exts | 
| ByteCount | System.Posix.Types | 
| bytesAllocated | GHC.Stats | 
| bytesCopied | GHC.Stats |