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* [gcc r12-6460] [Ada] Recover proof of Ada.Strings.Fixed with assertions
@ 2022-01-11 13:27 Pierre-Marie de Rodat
0 siblings, 0 replies; only message in thread
From: Pierre-Marie de Rodat @ 2022-01-11 13:27 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:87f152ba31e41df9225ff08682eca7b8fb66234b
commit r12-6460-g87f152ba31e41df9225ff08682eca7b8fb66234b
Author: Yannick Moy <moy@adacore.com>
Date: Wed Jan 5 10:43:25 2022 +0100
[Ada] Recover proof of Ada.Strings.Fixed with assertions
gcc/ada/
* libgnat/a-strfix.adb (Insert, Overwrite): Add assertions.
Diff:
---
gcc/ada/libgnat/a-strfix.adb | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/gcc/ada/libgnat/a-strfix.adb b/gcc/ada/libgnat/a-strfix.adb
index 255738a229b..74752543024 100644
--- a/gcc/ada/libgnat/a-strfix.adb
+++ b/gcc/ada/libgnat/a-strfix.adb
@@ -384,6 +384,10 @@ package body Ada.Strings.Fixed with SPARK_Mode is
Source (Source'First .. Before - 1);
Result (Front + 1 .. Front + New_Item'Length) :=
New_Item;
+
+ pragma Assert
+ (Result (1 .. Before - Source'First)
+ = Source (Source'First .. Before - 1));
pragma Assert
(Result
(Before - Source'First + 1
@@ -558,15 +562,21 @@ package body Ada.Strings.Fixed with SPARK_Mode is
if Position <= Source'Last - New_Item'Length then
Result (Front + New_Item'Length + 1 .. Result'Last) :=
Source (Position + New_Item'Length .. Source'Last);
+
+ pragma Assert
+ (Result
+ (Position - Source'First + New_Item'Length + 1
+ .. Result'Last)
+ = Source (Position + New_Item'Length .. Source'Last));
end if;
pragma Assert
(if Position <= Source'Last - New_Item'Length
then
Result
- (Position - Source'First + New_Item'Length + 1
- .. Result'Last)
- = Source (Position + New_Item'Length .. Source'Last));
+ (Position - Source'First + New_Item'Length + 1
+ .. Result'Last)
+ = Source (Position + New_Item'Length .. Source'Last));
end return;
end;
end Overwrite;
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