Fix #12088 FP constStatement with delete in loop increment (#5576)

Author: chrchr-github

lib/checkother.cpp

@@ -1910,8 +1910,12 @@ static bool isConstStatement(const Token *tok, bool cpp)
         return false;
     if (Token::Match(tok, "<<|>>") && !astIsIntegral(tok, false))
         return false;
-    if (tok->astTop() && Token::simpleMatch(tok->astTop()->astOperand1(), "delete"))
-        return false;
+    const Token* tok2 = tok;
+    while (tok2) {
+        if (Token::simpleMatch(tok2->astOperand1(), "delete"))
+            return false;
+        tok2 = tok2->astParent();
+    }
     if (Token::Match(tok, "&&|%oror%"))
         return isConstStatement(tok->astOperand1(), cpp) && isConstStatement(tok->astOperand2(), cpp);
     if (Token::Match(tok, "!|~|%cop%") && (tok->astOperand1() || tok->astOperand2()))

test/testother.cpp

@@ -5877,6 +5877,11 @@ class TestOther : public TestFixture {
               "    std::array<std::array<double,3>,3> array;\n"
               "}\n");
         ASSERT_EQUALS("", errout.str());
+
+        check("void f(const std::vector<int*>& v) {\n" // #12088
+              "    for (auto it = v.begin(); it != v.end(); delete *it++);\n"
+              "}\n");
+        ASSERT_EQUALS("", errout.str());
     }
 
     void duplicateBranch() {