Bob Duff
2702882fdb
Print warning for a user-defined "=" that does not compose as might be expected (i.e. is ignored for predefined "=" of a containing record or array type). This warning is enabled by -gnatw_q; we don't enable it by default because it generates too many false positives. We also don't enable it via -gnatwa. gcc/ada/ * exp_ch4.adb (Expand_Array_Equality): Do not test Ltyp = Rtyp here, because that is necessarily true. Move assertion thereof to more general place. (Expand_Composite_Equality): Pass in Outer_Type, for use in warnings. Rename Typ to be Comp_Type, to more clearly distinguish it from Outer_Type. Print warning when appropriate. * exp_ch4.ads: Minor comment fix. * errout.ads: There is no such pragma as Warning_As_Pragma -- Warning_As_Error must have been intended. Improve comment for ?x?. * exp_ch3.adb (Build_Untagged_Equality): Update comment to be accurate for more recent versions of Ada. * sem_case.adb (Choice_Analysis): Declare user-defined "=" functions as abstract. * sem_util.ads (Is_Bounded_String): Give RM reference in comment. * warnsw.ads, warnsw.adb (Warn_On_Ignored_Equality): Implement new warning switch -gnatw_q. * doc/gnat_ugn/building_executable_programs_with_gnat.rst: Document new warning switch. * gnat_ugn.texi: Regenerate.
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