From 7bbdffa22bd3e0d3fcedb13447b33dd9bfef6f7f Mon Sep 17 00:00:00 2001
From: Ian Lance Taylor <ian@gcc.gnu.org>
Date: Mon, 5 Nov 2018 21:02:07 +0000
Subject: [PATCH] compiler: handle abstract type in builtin numeric const value

    Builtin_call_expression::do_numeric_constant_value can be called by
    Array_type::verify_length before the determine types pass, so accept
    an abstract type.

    Test case is https://golang.org/cl/147537.

    Fixes golang/go#28601

    Reviewed-on: https://go-review.googlesource.com/c/147442

From-SVN: r265820
---
 gcc/go/gofrontend/MERGE          | 2 +-
 gcc/go/gofrontend/expressions.cc | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/go/gofrontend/MERGE b/gcc/go/gofrontend/MERGE
index e455647f650a..1cdb8a923830 100644
--- a/gcc/go/gofrontend/MERGE
+++ b/gcc/go/gofrontend/MERGE
@@ -1,4 +1,4 @@
-df841cce9fd271a25269e3514c2e9b61deaf2c4c
+5fcfe352ad91945a4f4d0dcfb6309df9bd072c7d
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.
diff --git a/gcc/go/gofrontend/expressions.cc b/gcc/go/gofrontend/expressions.cc
index e1feb66f66a7..75fa19b78f98 100644
--- a/gcc/go/gofrontend/expressions.cc
+++ b/gcc/go/gofrontend/expressions.cc
@@ -8294,7 +8294,7 @@ Builtin_call_expression::do_numeric_constant_value(Numeric_constant* nc) const
       if (arg_type->is_error())
 	return false;
       if (arg_type->is_abstract())
-	return false;
+	arg_type = arg_type->make_non_abstract_type();
       if (this->seen_)
         return false;