Frits van Bommel e37c82d1ec Use LLVM OStream wrapper instead of <iostream> in the logger. ...

llvm::OStream provides all std::ostream functionality (by holding a
std::ostream* internally), but
 * doesn't include <iostream>, avoiding per-file overhead.
 * allows the stream pointer to be null, and the (inlined) operators do nothing
   when that's the case. (This also allows removal of the ofstream("/dev/null")
   hack Logger used when disabled, which presumably wasn't very portable)

2009-02-26 14:51:02 +01:00

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