* [COMMITTED] ada: Improve error message for ambiguous subprogram call
@ 2023-07-18 13:13 Marc Poulhiès
0 siblings, 0 replies; only message in thread
From: Marc Poulhiès @ 2023-07-18 13:13 UTC (permalink / raw)
To: gcc-patches; +Cc: Eric Botcazou
From: Eric Botcazou <ebotcazou@adacore.com>
This restores the full listing of the types for the interpretations.
gcc/ada/
* sem_util.ads (Wrong_Type): Add Multiple parameter defaulting to
False and document it.
* sem_util.adb (Wrong_Type): Do not return early if an error has
already been posted on Expr and Multiple is True.
* sem_ch4.adb (Analyze_One_Call): Pass All_Errors_Mode as the
actual parameter for Multiple to Wrong_Type.
Tested on x86_64-pc-linux-gnu, committed on master.
---
gcc/ada/sem_ch4.adb | 6 +++++-
gcc/ada/sem_util.adb | 15 ++++++++++-----
gcc/ada/sem_util.ads | 8 ++++++--
3 files changed, 21 insertions(+), 8 deletions(-)
diff --git a/gcc/ada/sem_ch4.adb b/gcc/ada/sem_ch4.adb
index fafb7e63110..8543f0d578b 100644
--- a/gcc/ada/sem_ch4.adb
+++ b/gcc/ada/sem_ch4.adb
@@ -4099,7 +4099,11 @@ package body Sem_Ch4 is
Actual, Etype (Etype (Formal)));
end if;
- Wrong_Type (Actual, Etype (Formal));
+ -- If we are going to output a secondary error message
+ -- below, we need to have Wrong_Type output the main one.
+
+ Wrong_Type
+ (Actual, Etype (Formal), Multiple => All_Errors_Mode);
if Nkind (Actual) = N_Op_Eq
and then Nkind (Left_Opnd (Actual)) = N_Identifier
diff --git a/gcc/ada/sem_util.adb b/gcc/ada/sem_util.adb
index 222fd72a061..35ec296ab93 100644
--- a/gcc/ada/sem_util.adb
+++ b/gcc/ada/sem_util.adb
@@ -29398,7 +29398,11 @@ package body Sem_Util is
-- Wrong_Type --
----------------
- procedure Wrong_Type (Expr : Node_Id; Expected_Type : Entity_Id) is
+ procedure Wrong_Type
+ (Expr : Node_Id;
+ Expected_Type : Entity_Id;
+ Multiple : Boolean := False)
+ is
Found_Type : constant Entity_Id := First_Subtype (Etype (Expr));
Expec_Type : constant Entity_Id := First_Subtype (Expected_Type);
@@ -29485,13 +29489,14 @@ package body Sem_Util is
begin
-- Don't output message if either type is Any_Type, or if a message
- -- has already been posted for this node. We need to do the latter
- -- check explicitly (it is ordinarily done in Errout), because we
- -- are using ! to force the output of the error messages.
+ -- has already been posted for this node and we do not want multiple
+ -- error messages. We need to do the latter check explicitly (it is
+ -- ordinarily done in Errout) because we are using '!' to force the
+ -- output of the error messages.
if Expec_Type = Any_Type
or else Found_Type = Any_Type
- or else Error_Posted (Expr)
+ or else (Error_Posted (Expr) and then not Multiple)
then
return;
diff --git a/gcc/ada/sem_util.ads b/gcc/ada/sem_util.ads
index 7fc77de2b8a..b56a235c022 100644
--- a/gcc/ada/sem_util.ads
+++ b/gcc/ada/sem_util.ads
@@ -3362,12 +3362,16 @@ package Sem_Util is
-- is potentially issued: it is the visible entity in the former case, and
-- the use_clause in the latter case.
- procedure Wrong_Type (Expr : Node_Id; Expected_Type : Entity_Id);
+ procedure Wrong_Type
+ (Expr : Node_Id;
+ Expected_Type : Entity_Id;
+ Multiple : Boolean := False);
-- Output error message for incorrectly typed expression. Expr is the node
-- for the incorrectly typed construct (Etype (Expr) is the type found),
-- and Expected_Type is the entity for the expected type. Note that Expr
-- does not have to be a subexpression, anything with an Etype field may
- -- be used.
+ -- be used. If Multiple is False, do not output the message if an error
+ -- has already been posted for Expr.
function Yields_Synchronized_Object (Typ : Entity_Id) return Boolean;
-- Determine whether type Typ "yields synchronized object" as specified by
--
2.40.0
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