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* [gcc r14-4265] ada: Clarify RM references that justify a constraint check
@ 2023-09-26 11:45 Marc Poulhi?s
0 siblings, 0 replies; only message in thread
From: Marc Poulhi?s @ 2023-09-26 11:45 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:92361698288fd3192655f409f603b88b0aa182b8
commit r14-4265-g92361698288fd3192655f409f603b88b0aa182b8
Author: Yannick Moy <moy@adacore.com>
Date: Tue Sep 12 09:54:32 2023 +0200
ada: Clarify RM references that justify a constraint check
gcc/ada/
* exp_ch5.adb (Expand_N_Case_Statement): Reference both sections
of the Ada RM that deal with case statements and case expressions
to justify the insertion of a runtime check.
Diff:
---
gcc/ada/exp_ch5.adb | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/gcc/ada/exp_ch5.adb b/gcc/ada/exp_ch5.adb
index d55fdb3e2e5..cd3b02b9360 100644
--- a/gcc/ada/exp_ch5.adb
+++ b/gcc/ada/exp_ch5.adb
@@ -4092,8 +4092,9 @@ package body Exp_Ch5 is
end if;
-- First step is to worry about possible invalid argument. The RM
- -- requires (RM 5.4(13)) that if the result is invalid (e.g. it is
- -- outside the base range), then Constraint_Error must be raised.
+ -- requires (RM 4.5.7 (21/3) and 5.4 (13)) that if the result is
+ -- invalid (e.g. it is outside the base range), then Constraint_Error
+ -- must be raised.
-- Case of validity check required (validity checks are on, the
-- expression is not known to be valid, and the case statement
@@ -4274,7 +4275,7 @@ package body Exp_Ch5 is
-- If Predicates_Ignored is true the value does not satisfy the
-- predicate, and there is no Others choice, Constraint_Error
- -- must be raised (4.5.7 (21/3)).
+ -- must be raised (RM 4.5.7 (21/3) and 5.4 (13)).
if Predicates_Ignored (Etype (Expr)) then
declare
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