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-rw-r--r--gcc/ada/ChangeLog6
-rw-r--r--gcc/ada/gcc-interface/trans.c1
2 files changed, 7 insertions, 0 deletions
diff --git a/gcc/ada/ChangeLog b/gcc/ada/ChangeLog
index 27bb79d..e882e39 100644
--- a/gcc/ada/ChangeLog
+++ b/gcc/ada/ChangeLog
@@ -1,5 +1,11 @@
2018-08-21 Eric Botcazou <ebotcazou@adacore.com>
+ * gcc-interface/trans.c (Call_to_gnu): Always suppress an
+ unchecked conversion around the actual for an In parameter
+ passed by copy.
+
+2018-08-21 Eric Botcazou <ebotcazou@adacore.com>
+
* exp_util.adb (Is_Possibly_Unaligned_Object): For the case of a
selected component inherited in a record extension and subject
to a representation clause, retrieve the position and size from
diff --git a/gcc/ada/gcc-interface/trans.c b/gcc/ada/gcc-interface/trans.c
index 0371d00..940bf5f 100644
--- a/gcc/ada/gcc-interface/trans.c
+++ b/gcc/ada/gcc-interface/trans.c
@@ -4450,6 +4450,7 @@ Call_to_gnu (Node_Id gnat_node, tree *gnu_result_type_p, tree gnu_target,
const bool suppress_type_conversion
= ((Nkind (gnat_actual) == N_Unchecked_Type_Conversion
&& (!in_param
+ || !is_by_ref_formal_parm
|| (Is_Composite_Type (Underlying_Type (gnat_formal_type))
&& !Is_Constrained (Underlying_Type (gnat_formal_type)))))
|| (Nkind (gnat_actual) == N_Type_Conversion