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2008-08-01 Hristian Kirtchev <kirtchev@adacore.com> * rtsfind.ads: Add block IO versions of stream routines for Strings. * bindgen.adb, gnat_rm.texi, gnat_ugn.texi, opt.ads, sem_prag.adb, snames.adb, snames.ads, snames.h, par-prag.adb: Undo Canonical_Streams related changes. * s-rident.ads: Add new restriction No_Stream_Optimizations. * s-ststop.ads, s-ststop.adb: Comment reformatting. Define enumeration type to designate different IO mechanisms. Enchance generic package Stream_Ops_Internal to include an implementation of Input and Output. * exp_attr.adb (Find_Stream_Subprogram): If restriction No_Stream_Optimization is active, choose the default byte IO implementations of stream attributes for Strings. Otherwise use the corresponding block IO version. From-SVN: r138511
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