Fix #11728 FP unreadVariable with brace-init (#5075)

Author: chrchr-github

lib/fwdanalysis.cpp

@@ -501,8 +501,6 @@ bool FwdAnalysis::possiblyAliased(const Token *expr, const Token *startToken) co
     const bool pure = false;
     const bool followVar = false;
     for (const Token *tok = startToken; tok; tok = tok->previous()) {
-        if (tok->str() == "{" && tok->scope()->type == Scope::eFunction && !(tok->astParent() && tok->astParent()->str() == ","))
-            break;
 
         if (Token::Match(tok, "%name% (") && !Token::Match(tok, "if|while|for")) {
             // Is argument passed by reference?

test/testunusedvar.cpp

@@ -161,6 +161,7 @@ class TestUnusedVar : public TestFixture {
         TEST_CASE(localvaralias18); // ticket #9234 - iterator
         TEST_CASE(localvaralias19); // ticket #9828
         TEST_CASE(localvaralias20); // ticket #10966
+        TEST_CASE(localvaralias21);
         TEST_CASE(localvarasm);
         TEST_CASE(localvarstatic);
         TEST_CASE(localvarextern);
@@ -4926,6 +4927,18 @@ class TestUnusedVar : public TestFixture {
                            errout.str());
     }
 
+    void localvaralias21() { // #11728
+        functionVariableUsage("void f(int i) {\n"
+                              "    bool b = true;\n"
+                              "    bool* p = &b;\n"
+                              "    int j{};\n"
+                              "    if (i)\n"
+                              "        b = false;\n"
+                              "    if (*p) {}\n"
+                              "}\n");
+        ASSERT_EQUALS("", errout.str());
+    }
+
     void localvarasm() {
 
         functionVariableUsage("void foo(int &b)\n"