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2017-04-25 Hristian Kirtchev <kirtchev@adacore.com> * comperr.adb (Compiler_Abort): Add a pair of pragma Warnings On/Off to defend against a spurious warning in conditional compilation. * exp_ch4.adb (Rewrite_Comparison): Reimplemented. * namet.adb (Finalize): Add a pair of pragma Warnings On/Off to defend against a spurious warning in conditional compilation. * output.adb Add a pair of pragma Warnings On/Off to defend against a spurious warning in conditional compilation. * sem_eval.adb (Eval_Relational_Op): Major code clean up. (Fold_General_Op): New routine. (Fold_Static_Real_Op): New routine. (Test_Comparison): New routine. * sem_eval.ads (Test_Comparison): New routine. * sem_warn.adb (Is_Attribute_Constant_Comparison): New routine. (Warn_On_Constant_Valid_Condition): New routine. (Warn_On_Known_Condition): Use Is_Attribute_Constant_Comparison to detect a specific case. * sem_warn.adb (Warn_On_Constant_Valid_Condition): New routine. * urealp.adb (Tree_Read): Add a pair of pragma Warnings On/Off to defend against a spurious warning in conditional compilation. (Tree_Write): Add a pair of pragma Warnings On/Off to defend against a spurious warning in conditional compilation. * usage.adb Add a pair of pragma Warnings On/Off to defend against a spurious warning in conditional compilation. 2017-04-25 Arnaud Charlet <charlet@adacore.com> * sinfo.ads, sem_ch13.adb: Update comment. From-SVN: r247224
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