[COMMITTED] ada: Assertion failure on for-of loop iterating on selected component

[COMMITTED] ada: Assertion failure on for-of loop iterating on selected component

[Marc Poulhiès]

From: Javier Miranda <miranda@adacore.com>

gcc/ada/

	* sem_util.adb (Is_Dependent_Component_Of_Mutable_Object): Protect
	access to Entity attribute and add missing code to check function
	selector in a prefix form call.

Tested on x86_64-pc-linux-gnu, committed on master.

---
 gcc/ada/sem_util.adb | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/gcc/ada/sem_util.adb b/gcc/ada/sem_util.adb
index 35ec296ab93..3229f4e9dd2 100644
--- a/gcc/ada/sem_util.adb
+++ b/gcc/ada/sem_util.adb
@@ -16509,8 +16509,13 @@ package body Sem_Util is
             --  False (it could be a function selector in a prefix form call
             --  occurring in an iterator specification).
 
-            if Ekind (Entity (Selector_Name (Object))) not in
-                 E_Component | E_Discriminant
+            if (Present (Entity (Selector_Name (Object)))
+                  and then Ekind (Entity (Selector_Name (Object))) not in
+                             E_Component | E_Discriminant)
+              or else
+                (Inside_A_Generic
+                   and then Nkind (Parent (Selector_Name (Object)))
+                              = N_Function_Call)
             then
                return False;
             end if;
-- 
2.40.0