From ee7ad272d668a50b7e4d8d510b60819517f034e7 Mon Sep 17 00:00:00 2001
From: Robert Reif <reif@earthlink.net>
Date: Wed, 16 Jun 2010 18:04:31 +0200
Subject: [PATCH] variable usage: fix false positives when __attribute__ is
 used. Ticket: #1792

---
 lib/token.cpp          |  1 +
 lib/tokenize.cpp       |  4 ++++
 test/testunusedvar.cpp | 12 ++++++++++++
 3 files changed, 17 insertions(+)

diff --git a/lib/token.cpp b/lib/token.cpp
index cffbc99bd..d8b39f83c 100644
--- a/lib/token.cpp
+++ b/lib/token.cpp
@@ -104,6 +104,7 @@ void Token::deleteThis()
         _isName = _next->_isName;
         _isNumber = _next->_isNumber;
         _isBoolean = _next->_isBoolean;
+        _isUnused = _next->_isUnused;
         _varId = _next->_varId;
         _fileIndex = _next->_fileIndex;
         _linenr = _next->_linenr;
diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index 19ac61473..e873082ea 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -7688,6 +7688,10 @@ void Tokenizer::simplifyAttribute()
                     if (Token::Match(tok->previous(), "%type%"))
                         tok->previous()->isUnused(true);
                 }
+
+                // check if before variable name
+                else if (Token::Match(tok->next()->link()->next(), "%type%"))
+                    tok->next()->link()->next()->isUnused(true);
             }
 
             Token::eraseTokens(tok, tok->next()->link()->next());
diff --git a/test/testunusedvar.cpp b/test/testunusedvar.cpp
index 0d76fead7..3d269e540 100644
--- a/test/testunusedvar.cpp
+++ b/test/testunusedvar.cpp
@@ -1935,6 +1935,18 @@ private:
                               "    bool test __attribute__((unused)) = true;\n"
                               "}\n");
         ASSERT_EQUALS(std::string(""), errout.str());
+
+        functionVariableUsage("int foo()\n"
+                              "{\n"
+                              "    bool __attribute__((unused)) test;\n"
+                              "}\n");
+        ASSERT_EQUALS(std::string(""), errout.str());
+
+        functionVariableUsage("int foo()\n"
+                              "{\n"
+                              "    bool __attribute__((unused)) test = true;\n"
+                              "}\n");
+        ASSERT_EQUALS(std::string(""), errout.str());
     }
 };