This patch corrects an issue in the compiler whereby the expansion of a
tagged membership test when one of the types involved is a protected
type can cause a crash a compile-time.
Tested on x86_64-pc-linux-gnu, committed on trunk
gcc/ada/
* exp_ch4.adb (Tagged_Membership): Use corresponding record type
when expanding a tagged membership test on protected types.diff --git a/gcc/ada/exp_ch4.adb b/gcc/ada/exp_ch4.adb
--- a/gcc/ada/exp_ch4.adb
+++ b/gcc/ada/exp_ch4.adb
@@ -15346,6 +15346,17 @@ package body Exp_Ch4 is
begin
SCIL_Node := Empty;
+ -- We have to examine the corresponding record type when dealing with
+ -- protected types instead of the original, unexpanded, type.
+
+ if Ekind (Right_Type) = E_Protected_Type then
+ Right_Type := Corresponding_Record_Type (Right_Type);
+ end if;
+
+ if Ekind (Left_Type) = E_Protected_Type then
+ Left_Type := Corresponding_Record_Type (Left_Type);
+ end if;
+
-- In the case where the type is an access type, the test is applied
-- using the designated types (needed in Ada 2012 for implicit anonymous
-- access conversions, for AI05-0149).
