From: Ian Lance Taylor <ian@gcc.gnu.org>
Date: Mon, 29 Aug 2011 22:02:01 +0000 (+0000)
Subject: Don't lower blocks twice.
X-Git-Tag: releases/gcc-4.7.0~4135
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=273113346e85423e88d1352c4acafe41e7dd90b5;p=thirdparty%2Fgcc.git

Don't lower blocks twice.

From-SVN: r178263
---

diff --git a/gcc/go/gofrontend/gogo.cc b/gcc/go/gofrontend/gogo.cc
index 4aafe412bc51..c544eba8d2f8 100644
--- a/gcc/go/gofrontend/gogo.cc
+++ b/gcc/go/gofrontend/gogo.cc
@@ -1268,6 +1268,12 @@ Lower_parse_tree::function(Named_object* no)
 int
 Lower_parse_tree::statement(Block* block, size_t* pindex, Statement* sorig)
 {
+  // Because we explicitly traverse the statement's contents
+  // ourselves, we want to skip block statements here.  There is
+  // nothing to lower in a block statement.
+  if (sorig->is_block_statement())
+    return TRAVERSE_CONTINUE;
+
   Statement_inserter hold_inserter(this->inserter_);
   this->inserter_ = Statement_inserter(block, pindex);