Fix #11355 FN: arrayIndexOutOfBounds (#4555)

* Fix  #11355 FN: arrayIndexOutOfBounds

* Fix

lib/tokenize.cpp

@@ -3159,6 +3159,26 @@ void Tokenizer::simplifyDoublePlusAndDoubleMinus()
 
 void Tokenizer::arraySize()
 {
+    auto getStrTok = [](Token* tok, bool addLength, Token** endStmt) -> Token* {
+        if (addLength) {
+            *endStmt = tok->tokAt(6);
+            return tok->tokAt(4);
+        }
+        if (Token::Match(tok, "%var% [ ] =")) {
+            tok = tok->tokAt(4);
+            int parCount = 0;
+            while (Token::simpleMatch(tok, "(")) {
+                ++parCount;
+                tok = tok->next();
+            }
+            if (Token::Match(tok, "%str%")) {
+                *endStmt = tok->tokAt(parCount + 1);
+                return tok;
+            }
+        }
+        return nullptr;
+    };
+
     for (Token *tok = list.front(); tok; tok = tok->next()) {
         if (!tok->isName() || !Token::Match(tok, "%var% [ ] ="))
             continue;
@@ -3170,11 +3190,11 @@ void Tokenizer::arraySize()
             addlength = true;
         }
 
-        if (addlength || Token::Match(tok, "%var% [ ] = %str% ;")) {
+        Token* endStmt{};
-            tok = tok->next();
+        if (const Token* strTok = getStrTok(tok, addlength, &endStmt)) {
-            const int sz = Token::getStrArraySize(tok->tokAt(3));
+            const int sz = Token::getStrArraySize(strTok);
-            tok->insertToken(MathLib::toString(sz));
+            tok->next()->insertToken(MathLib::toString(sz));
-            tok = tok->tokAt(5);
+            tok = endStmt;
         }
 
         else if (Token::Match(tok, "%var% [ ] = {")) {

test/testbufferoverrun.cpp

@@ -194,6 +194,7 @@ private:
         TEST_CASE(array_index_67); // #1596
         TEST_CASE(array_index_68); // #6655
         TEST_CASE(array_index_69); // #6370
+        TEST_CASE(array_index_70); // #11355
         TEST_CASE(array_index_multidim);
         TEST_CASE(array_index_switch_in_for);
         TEST_CASE(array_index_for_in_for);   // FP: #2634
@@ -1901,6 +1902,15 @@ private:
         ASSERT_EQUALS("[test.cpp:5]: (error) Array 'a[4]' accessed at index 30, which is out of bounds.\n", errout.str());
     }
 
+    // #11355
+    void array_index_70() {
+        check("void f() {\n"
+              "    static const char a[] = ((\"test\"));\n"
+              "    printf(\"%c\", a[5]);\n"
+              "}\n");
+        ASSERT_EQUALS("[test.cpp:3]: (error) Array 'a[5]' accessed at index 5, which is out of bounds.\n", errout.str());
+    }
+
     void array_index_multidim() {
         check("void f()\n"
               "{\n"