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| author | Piotr Trojanek <trojanek@adacore.com> | 2022-01-22 16:32:57 +0100 |
|---|---|---|
| committer | Pierre-Marie de Rodat <derodat@adacore.com> | 2022-05-10 08:19:25 +0000 |
| commit | 3a978538036cd43d629c7b003c5ee6c8b3bf2c98 (patch) | |
| tree | ce5147c2907ad86ff3f93324380cba0adb9e9560 /gcc | |
| parent | 469688bfee89002aa8e5a7812dcbf2b1ee9073dc (diff) | |
| download | gcc-3a978538036cd43d629c7b003c5ee6c8b3bf2c98.zip gcc-3a978538036cd43d629c7b003c5ee6c8b3bf2c98.tar.gz gcc-3a978538036cd43d629c7b003c5ee6c8b3bf2c98.tar.bz2 | |
[Ada] Check declare and qualified expressions for unset references
Detection of references to unset (uninitialized) objects requires calls
to Check_Unset_Reference on every subexpression of a composite statement
and expression. For declare and qualified expressions this was done only
when they occurred within another composite statement/expression.
gcc/ada/
* sem_res.adb (Resolve_Declare_Expression): Check expression for
references to unset objects.
(Resolve_Qualified_Expression): Likewise.
* sem_warn.adb (Check_Unset_Reference): Remove handling of
declare and qualified expressions; clarify comment for type
conversions.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ada/sem_res.adb | 2 | ||||
| -rw-r--r-- | gcc/ada/sem_warn.adb | 10 |
2 files changed, 6 insertions, 6 deletions
diff --git a/gcc/ada/sem_res.adb b/gcc/ada/sem_res.adb index 7d30f15..5a57d62 100644 --- a/gcc/ada/sem_res.adb +++ b/gcc/ada/sem_res.adb @@ -7673,6 +7673,7 @@ package body Sem_Res is end if; Resolve (Expr, Typ); + Check_Unset_Reference (Expr); end Resolve_Declare_Expression; ----------------------------------------- @@ -10586,6 +10587,7 @@ package body Sem_Res is begin Resolve (Expr, Target_Typ); + Check_Unset_Reference (Expr); -- A qualified expression requires an exact match of the type, class- -- wide matching is not allowed. However, if the qualifying type is diff --git a/gcc/ada/sem_warn.adb b/gcc/ada/sem_warn.adb index e02f6e0..8ca5c76 100644 --- a/gcc/ada/sem_warn.adb +++ b/gcc/ada/sem_warn.adb @@ -2244,13 +2244,11 @@ package body Sem_Warn is Check_Unset_Reference (Pref); end; - -- For type conversions, qualifications, or expressions with actions, - -- examine the expression. + -- Type conversions can appear in assignment statements both + -- as variable names and as expressions. We examine their own + -- expressions only when processing their parent node. - when N_Expression_With_Actions - | N_Qualified_Expression - | N_Type_Conversion - => + when N_Type_Conversion => Check_Unset_Reference (Expression (N)); -- For explicit dereference, always check prefix, which will generate |