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* [gcc r12-5097] [Ada] Avoid warnings regarding rep clauses in generics
@ 2021-11-10 8:59 Pierre-Marie de Rodat
0 siblings, 0 replies; only message in thread
From: Pierre-Marie de Rodat @ 2021-11-10 8:59 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:db778c7022cc0e5b2b4100ccc7c2e52a0eaba3c0
commit r12-5097-gdb778c7022cc0e5b2b4100ccc7c2e52a0eaba3c0
Author: Bob Duff <duff@adacore.com>
Date: Wed Nov 3 12:06:28 2021 -0400
[Ada] Avoid warnings regarding rep clauses in generics
gcc/ada/
* repinfo.adb (List_Common_Type_Info, List_Object_Info): Add
check for In_Generic_Scope.
(List_Component_Layout): Check for known static values.
* sem_ch13.adb (Check_Record_Representation_Clause): Add check
for In_Generic_Scope.
Diff:
---
gcc/ada/repinfo.adb | 29 ++++++++++++++++++++++-------
gcc/ada/sem_ch13.adb | 6 ++++--
2 files changed, 26 insertions(+), 9 deletions(-)
diff --git a/gcc/ada/repinfo.adb b/gcc/ada/repinfo.adb
index b86885cec6c..a11057a1a49 100644
--- a/gcc/ada/repinfo.adb
+++ b/gcc/ada/repinfo.adb
@@ -38,6 +38,7 @@ with Output; use Output;
with Osint.C; use Osint.C;
with Sem_Aux; use Sem_Aux;
with Sem_Eval; use Sem_Eval;
+with Sem_Util;
with Sinfo; use Sinfo;
with Sinfo.Nodes; use Sinfo.Nodes;
with Sinfo.Utils; use Sinfo.Utils;
@@ -426,11 +427,14 @@ package body Repinfo is
end if;
-- Alignment is not always set for task, protected, and class-wide
- -- types.
+ -- types. Representation aspects are not computed for types in a
+ -- generic unit.
else
pragma Assert
- (Is_Concurrent_Type (Ent) or else Is_Class_Wide_Type (Ent));
+ (Is_Concurrent_Type (Ent) or else
+ Is_Class_Wide_Type (Ent) or else
+ Sem_Util.In_Generic_Scope (Ent));
end if;
end List_Common_Type_Info;
@@ -902,6 +906,13 @@ package body Repinfo is
procedure List_Object_Info (Ent : Entity_Id) is
begin
+ -- The information has not been computed in a generic unit, so don't try
+ -- to print it.
+
+ if Sem_Util.In_Generic_Scope (Ent) then
+ return;
+ end if;
+
Write_Separator;
if List_Representation_Info_To_JSON then
@@ -1176,13 +1187,17 @@ package body Repinfo is
Write_Str (" range ");
end if;
- Sbit := Starting_First_Bit + Fbit;
+ if Known_Static_Normalized_First_Bit (Ent) then
+ Sbit := Starting_First_Bit + Fbit;
- if Sbit >= SSU then
- Sbit := Sbit - SSU;
- end if;
+ if Sbit >= SSU then
+ Sbit := Sbit - SSU;
+ end if;
- UI_Write (Sbit, Decimal);
+ UI_Write (Sbit, Decimal);
+ else
+ Write_Unknown_Val;
+ end if;
if List_Representation_Info_To_JSON then
Write_Line (", ");
diff --git a/gcc/ada/sem_ch13.adb b/gcc/ada/sem_ch13.adb
index f6679456f2b..d63d60fb385 100644
--- a/gcc/ada/sem_ch13.adb
+++ b/gcc/ada/sem_ch13.adb
@@ -12618,9 +12618,11 @@ package body Sem_Ch13 is
end if;
-- Skip the following warnings if overlap was detected; programmer
- -- should fix the errors first.
+ -- should fix the errors first. Also skip the warnings for types in
+ -- generics, because their representation information is not fully
+ -- computed.
- if not Overlap_Detected then
+ if not Overlap_Detected and then not In_Generic_Scope (Rectype) then
-- Check for record holes (gaps)
if Warn_On_Record_Holes then
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