* [COMMITTED] ada: Avoid crash in Find_Optional_Prim_Op
@ 2023-07-06 11:38 Marc Poulhiès
0 siblings, 0 replies; only message in thread
From: Marc Poulhiès @ 2023-07-06 11:38 UTC (permalink / raw)
To: gcc-patches; +Cc: Viljar Indus
From: Viljar Indus <indus@adacore.com>
Find_Optional_Prim_Op can crash when the Underlying_Type is Empty.
This can happen when you are dealing with a structure type with a
private part that does not have its Full_View set yet.
gcc/ada/
* exp_util.adb (Find_Optional_Prim_Op): Stop deriving primitive
operation if there is no underlying type to derive it from.
Tested on x86_64-pc-linux-gnu, committed on master.
---
gcc/ada/exp_util.adb | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/gcc/ada/exp_util.adb b/gcc/ada/exp_util.adb
index c74921e1772..66e1acbf65e 100644
--- a/gcc/ada/exp_util.adb
+++ b/gcc/ada/exp_util.adb
@@ -6291,6 +6291,11 @@ package body Exp_Util is
Typ := Underlying_Type (Typ);
+ -- We cannot find the operation if there is no full view available.
+ if Typ = Empty then
+ return Empty;
+ end if;
+
-- Loop through primitive operations
Prim := First_Elmt (Primitive_Operations (Typ));
--
2.40.0
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