Fix #13768 (Known value is not set properly for uint32_t{123}) (#7458)

Author: danmar

lib/vf_settokenvalue.cpp

@@ -706,6 +706,7 @@ namespace ValueFlow
         else if (Token::Match(parent, ":: %name%") && parent->astOperand2() == tok) {
             setTokenValue(parent, std::move(value), settings);
         }
+
         // Calling std::size or std::empty on an array
         else if (value.isTokValue() && Token::simpleMatch(value.tokvalue, "{") && tok->variable() &&
                  tok->variable()->isArray() && Token::Match(parent->previous(), "%name% (") && astIsRHS(tok)) {
@@ -724,5 +725,10 @@ namespace ValueFlow
                 }
             }
         }
+
+        // C++ constructor
+        else if (value.isIntValue() && parent->str() == "{" && parent->valueType() && (parent->valueType()->isIntegral() || parent->valueType()->pointer > 0)) {
+            setTokenValue(parent, std::move(value), settings);
+        }
     }
 }

test/testvalueflow.cpp

@@ -587,6 +587,8 @@ class TestValueFlow : public TestFixture {
                                 "void foo() { x = N::e1; }";
             ASSERT_EQUALS(1, valueOfTok(code, "::").intvalue);
         }
+
+        ASSERT_EQUALS(63, valueOfTok("x = 3 * uint32_t{21};", "*").intvalue);
     }
 
     void valueFlowString() {