From patchwork Wed Sep  1 04:35:35 2010
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Subject: [gccgo] Better error message for missing statement after label
Date: Tue, 31 Aug 2010 18:35:35 -0000
From: Ian Taylor <iant@google.com>
X-Patchwork-Id: 63348
Message-Id: <mcrlj7maxns.fsf@google.com>
To: gcc-patches@gcc.gnu.org, gofrontend-dev@googlegroups.com

This patch improves gccgo's error message and subsequent processing when
a statement is missing after a label.  Committed to gccgo branch.

Ian


diff -r 5052eefabc12 go/parse.cc
--- a/go/parse.cc	Tue Aug 31 20:07:09 2010 -0700
+++ b/go/parse.cc	Tue Aug 31 21:34:26 2010 -0700
@@ -3072,6 +3072,14 @@
       return;
     }
 
+  if (!this->statement_may_start_here())
+    {
+      error_at(location, "missing statement after label");
+      this->unget_token(Token::make_operator_token(OPERATOR_SEMICOLON,
+						   location));
+      return;
+    }
+
   this->statement(label);
 }