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2017-04-27 Ed Schonberg <schonberg@adacore.com> * sem_util.adb, sem_util.ads (Build_Class_Wide_Clone_Body): Build body of subprogram that has a class-wide condition that contains calls to other primitives. (Build_Class_Wide_Clone_Call); Build a call to the common class-wide clone of a subprogram with classwide conditions. The body of the subprogram becomes a wrapper for a call to the clone. The inherited operation becomes a similar wrapper to which modified conditions apply, and the call to the clone includes the proper conversion in a call the parent operation. (Build_Class_Wide_Clone_Decl (Spec_Id : Entity_Id): For a subprogram that has a classwide condition that contains calls to other primitives, build an internal subprogram that is invoked through a type-specific wrapper for all inherited subprograms that may have a modified condition. * sem_prag.adb (Check_References): If subprogram has a classwide condition, create entity for corresponding clone, to be invoked through wrapper subprograns. (Analyze_Pre_Post_Condition_In_Decl_Part): Do not emit error message about placement if pragma isi internally generated. * sem_ch6.adb (Analyze_Subprogram_Body_Helper): If subprogram has a classwide clone, build body of clone as copy of original body, and rewrite original body as a wrapper as a wrapper for a call to the clone, so that it incorporates the original pre/postconditions of the subprogram. * freeze.adb (Check_Inherited_Conditions): For an inherited subprogram that inherits a classwide condition, build spec and body of corresponding wrapper so that call to inherited operation gets the modified conditions. * contracts.adb (Analyze_Contracts): If analysis of classwide condition has created a clone for a primitive operation, analyze declaration of clone. From-SVN: r247313
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