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* [gcc r12-5038] [Ada] Hang on compilation of unit with type extension in body
@ 2021-11-09 9:47 Pierre-Marie de Rodat
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From: Pierre-Marie de Rodat @ 2021-11-09 9:47 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:9f24d32cf6ae542f779a309e4b2f6c77fb6af4f7
commit r12-5038-g9f24d32cf6ae542f779a309e4b2f6c77fb6af4f7
Author: Justin Squirek <squirek@adacore.com>
Date: Fri Oct 29 23:43:38 2021 -0400
[Ada] Hang on compilation of unit with type extension in body
gcc/ada/
* exp_util.adb (Ancestor_Primitive): Prevent return of an
subprogram alias when the ancestor primitive of the alias is the
same as Subp.
Diff:
---
gcc/ada/exp_util.adb | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/gcc/ada/exp_util.adb b/gcc/ada/exp_util.adb
index b0ea44a7f7b..1bba0595741 100644
--- a/gcc/ada/exp_util.adb
+++ b/gcc/ada/exp_util.adb
@@ -10433,6 +10433,14 @@ package body Exp_Util is
-- inherited ancestor primitive.
elsif Present (Inher_Prim) then
+ -- It is possible that an internally generated alias could be
+ -- set to a subprogram which overrides the same aliased primitive,
+ -- so return Empty in this case.
+
+ if Ancestor_Primitive (Inher_Prim) = Subp then
+ return Empty;
+ end if;
+
return Inher_Prim;
-- Otherwise the current subprogram is the root of the inheritance or
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