It comes from an overzealous assertion.
Tested on x86_64-pc-linux-gnu, committed on trunk
gcc/ada/
* gcc-interface/utils2.cc (build_binary_op) <EQ_EXPR>: Also accept
pointer-to-function types that are not variant of each other.
diff --git a/gcc/ada/gcc-interface/utils2.cc b/gcc/ada/gcc-interface/utils2.cc
--- a/gcc/ada/gcc-interface/utils2.cc
+++ b/gcc/ada/gcc-interface/utils2.cc
@@ -1134,12 +1134,17 @@ build_binary_op (enum tree_code op_code, tree result_type,
else if (POINTER_TYPE_P (left_base_type)
&& POINTER_TYPE_P (right_base_type))
{
+ tree left_ref_type = TREE_TYPE (left_base_type);
+ tree right_ref_type = TREE_TYPE (right_base_type);
+
/* Anonymous access types in Ada 2005 can point to different
- members of a tagged type hierarchy. */
- gcc_assert (TYPE_MAIN_VARIANT (TREE_TYPE (left_base_type))
- == TYPE_MAIN_VARIANT (TREE_TYPE (right_base_type))
- || (TYPE_ALIGN_OK (TREE_TYPE (left_base_type))
- && TYPE_ALIGN_OK (TREE_TYPE (right_base_type))));
+ members of a tagged hierarchy or different function types. */
+ gcc_assert (TYPE_MAIN_VARIANT (left_ref_type)
+ == TYPE_MAIN_VARIANT (right_ref_type)
+ || (TYPE_ALIGN_OK (left_ref_type)
+ && TYPE_ALIGN_OK (right_ref_type))
+ || (TREE_CODE (left_ref_type) == FUNCTION_TYPE
+ && TREE_CODE (right_ref_type) == FUNCTION_TYPE));
best_type = left_base_type;
}