[Ada] Minor: improve comments

2019-12-16  Bob Duff  <duff@adacore.com>

gcc/ada/

	* errout.adb, errout.ads: Improve comments.

From-SVN: r279440
This commit is contained in:
Bob Duff 2019-12-16 10:35:24 +00:00 committed by Pierre-Marie de Rodat
parent 9aaea2cc4b
commit 495cdc79fb
3 changed files with 11 additions and 3 deletions

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@ -1,3 +1,7 @@
2019-12-16 Bob Duff <duff@adacore.com>
* errout.adb, errout.ads: Improve comments.
2019-12-16 Bob Duff <duff@adacore.com>
* sem_util.ads: Minor comment fix.

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@ -1716,9 +1716,12 @@ package body Errout is
function Is_Size_Too_Small_Message (S : String) return Boolean is
Size_For : constant String := "size for";
pragma Assert (Size_Too_Small_Message (1 .. Size_For'Last) = Size_For);
-- Assert that Size_Too_Small_Message starts with Size_For
begin
return S'Length >= Size_For'Length
and then S (S'First .. S'First + Size_For'Length - 1) = Size_For;
-- True if S starts with Size_For
end Is_Size_Too_Small_Message;
-----------------

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@ -957,8 +957,9 @@ package Errout is
function Is_Size_Too_Small_Message (S : String) return Boolean;
Size_Too_Small_Message : constant String :=
"size for& too small, minimum allowed is ^";
-- This message is explicitly tested in Special_Msg_Delete in the package
-- body, which is somewhat questionable, but at least by using a constant
-- we are obeying the DRY principle.
-- This message is printed in Freeze and Sem_Ch13. We also test for it in
-- the body of this package (see Special_Msg_Delete) ???which is somewhat
-- questionable. The Is_Size_Too_Small_Message function tests for it by
-- testing a prefix. The function and constant should be kept in synch.
end Errout;