From 7975ffba21202c6ee53f14c416b2de64d0393d39 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Marjam=C3=A4ki?= <daniel.marjamaki@gmail.com>
Date: Sat, 25 Aug 2012 13:07:33 +0200
Subject: [PATCH] Fixed #3980 (Variable not assigned a value)

---
 lib/checkunusedvar.cpp |  9 ++++++++-
 test/testunusedvar.cpp | 10 ++++++++++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/lib/checkunusedvar.cpp b/lib/checkunusedvar.cpp
index 8eb43ee94..0aa02c377 100644
--- a/lib/checkunusedvar.cpp
+++ b/lib/checkunusedvar.cpp
@@ -836,7 +836,14 @@ void CheckUnusedVar::checkFunctionVariableUsage_iterateScopes(const Scope* const
         }
 
         // assignment
-        else if (Token::Match(tok, "%var% [") && Token::simpleMatch(skipBracketsAndMembers(tok->next()), "=")) {
+        else if ((Token::Match(tok, "%var% [") && Token::simpleMatch(skipBracketsAndMembers(tok->next()), "=")) ||
+                 (Token::simpleMatch(tok, "* (") && Token::simpleMatch(tok->next()->link(), ") ="))) {
+            if (tok->str() == "*") {
+                tok = tok->tokAt(2);
+                if (tok->str() == "(")
+                    tok = tok->link()->next();
+            }
+
             unsigned int varid = tok->varId();
             const Variables::VariableUsage *var = variables.find(varid);
 
diff --git a/test/testunusedvar.cpp b/test/testunusedvar.cpp
index 82408043e..668338fc9 100644
--- a/test/testunusedvar.cpp
+++ b/test/testunusedvar.cpp
@@ -109,6 +109,7 @@ private:
         TEST_CASE(localvardynamic3); // ticket #3467
         TEST_CASE(localvararray1);  // ticket #2780
         TEST_CASE(localvararray2);  // ticket #3438
+        TEST_CASE(localvararray3);  // ticket #3980
         TEST_CASE(localvarstring1);
         TEST_CASE(localvarstring2); // ticket #2929
         TEST_CASE(localvarconst1);
@@ -3090,6 +3091,15 @@ private:
         ASSERT_EQUALS("", errout.str());
     }
 
+    void localvararray3() {
+        functionVariableUsage("int foo() {\n"
+                              "    int p[5][5];\n"
+                              "    *((int*)p[0]) = 0;\n"
+                              "    return p[0][0];\n"
+                              "}\n");
+        ASSERT_EQUALS("", errout.str());
+    }
+
     void localvarstring1() { // ticket #1597
         functionVariableUsage("void foo() {\n"
                               "    std::string s;\n"