* [Ada] Fix incorrect handling of Ghost aspect
@ 2022-07-13 10:02 Pierre-Marie de Rodat
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From: Pierre-Marie de Rodat @ 2022-07-13 10:02 UTC (permalink / raw)
To: gcc-patches; +Cc: Yannick Moy
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When a formal generic type is marked as Ghost, the instantiation of that
generic will contain a generic subtype for the actual with the Ghost
pragma. Recognize this case.
Tested on x86_64-pc-linux-gnu, committed on trunk
gcc/ada/
* sem_prag.adb (Analyze_Pragma): Recognize a generated subtype
with Ghost pragma for generic instantiations.
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diff --git a/gcc/ada/sem_prag.adb b/gcc/ada/sem_prag.adb
--- a/gcc/ada/sem_prag.adb
+++ b/gcc/ada/sem_prag.adb
@@ -16999,6 +16999,16 @@ package body Sem_Prag is
then
Id := Defining_Entity (Stmt);
exit;
+
+ -- When pragma Ghost applies to a generic formal type, the
+ -- type declaration in the instantiation is a generated
+ -- subtype declaration.
+
+ elsif Nkind (Stmt) = N_Subtype_Declaration
+ and then Present (Generic_Parent_Type (Stmt))
+ then
+ Id := Defining_Entity (Stmt);
+ exit;
end if;
-- The pragma applies to a legal construct, stop the traversal
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