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* [gcc r13-646] [Ada] Fix invalid expanded code for entry families
@ 2022-05-19 14:07 Pierre-Marie de Rodat
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From: Pierre-Marie de Rodat @ 2022-05-19 14:07 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:ca03325fb3a5fbf9c8af853d4c7f199e1adb08e3
commit r13-646-gca03325fb3a5fbf9c8af853d4c7f199e1adb08e3
Author: Piotr Trojanek <trojanek@adacore.com>
Date: Tue Apr 12 22:22:40 2022 +0200
[Ada] Fix invalid expanded code for entry families
Expansion of entry families created a slightly illegal AST with
Elsif_Parts being an empty list. Cleanup uncovered by the work on
detection of uninitialized scalars.
gcc/ada/
* exp_ch9.adb (Build_Find_Body_Index): Remove empty Elsif_Parts
from the constructed IF statement.
Diff:
---
gcc/ada/exp_ch9.adb | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/gcc/ada/exp_ch9.adb b/gcc/ada/exp_ch9.adb
index f9bdaf80c94..be791c3a338 100644
--- a/gcc/ada/exp_ch9.adb
+++ b/gcc/ada/exp_ch9.adb
@@ -2800,6 +2800,15 @@ package body Exp_Ch9 is
begin
Remove (Nod);
Set_Else_Statements (Ret, Then_Statements (Nod));
+
+ -- If Elsif_Parts becomes empty then remove it entirely, as
+ -- otherwise we would violate the invariant of If_Statement
+ -- node described in Sinfo.
+
+ if Is_Empty_List (Elsif_Parts (Ret)) then
+ pragma Assert (Elsif_Parts (Ret) /= No_List);
+ Set_Elsif_Parts (Ret, No_List);
+ end if;
end;
end if;
end if;
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2022-05-19 14:07 [gcc r13-646] [Ada] Fix invalid expanded code for entry families Pierre-Marie de Rodat
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