[COMMITTED] ada: Fix precondition in Interfaces.C.Strings
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Commit Message
From: Joffrey Huguet <huguet@adacore.com>
The precondition of both Update procedures in Interfaces.C.Strings were
incorrect. This patch fixes this.
gcc/ada/
* libgnat/i-cstrin.ads (Update): Fix precondition.
Tested on x86_64-pc-linux-gnu, committed on master.
---
gcc/ada/libgnat/i-cstrin.ads | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
@@ -121,8 +121,9 @@ is
with
Pre =>
Item /= Null_Ptr
- and then Strlen (Item) <= size_t'Last - Offset
- and then Strlen (Item) + Offset <= Chars'Length,
+ and then (Chars'First /= 0 or else Chars'Last /= size_t'Last)
+ and then Chars'Length <= size_t'Last - Offset
+ and then Chars'Length + Offset <= Strlen (Item),
Global => (In_Out => C_Memory);
procedure Update
@@ -133,8 +134,8 @@ is
with
Pre =>
Item /= Null_Ptr
- and then Strlen (Item) <= size_t'Last - Offset
- and then Strlen (Item) + Offset <= Str'Length,
+ and then Str'Length <= size_t'Last - Offset
+ and then Str'Length + Offset <= Strlen (Item),
Global => (In_Out => C_Memory);
Update_Error : exception;