Fix #12519 FP variableScope with variable in macro (#6131)

Author: chrchr-github

lib/checkother.cpp

@@ -944,6 +944,9 @@ void CheckOther::checkVariableScope()
         if (!var || !var->isLocal() || var->isConst())
             continue;
 
+        if (var->nameToken()->isExpandedMacro())
+            continue;
+
         const bool isPtrOrRef = var->isPointer() || var->isReference();
         const bool isSimpleType = var->typeStartToken()->isStandardType() || var->typeStartToken()->isEnumType() || (var->typeStartToken()->isC() && var->type() && var->type()->isStructType());
         if (!isPtrOrRef && !isSimpleType && !astIsContainer(var->nameToken()))

test/testother.cpp

@@ -100,6 +100,7 @@ class TestOther : public TestFixture {
         TEST_CASE(varScope35);
         TEST_CASE(varScope36);      // #12158
         TEST_CASE(varScope37);      // #12158
+        TEST_CASE(varScope38);
 
         TEST_CASE(oldStylePointerCast);
         TEST_CASE(invalidPointerCast);
@@ -1688,6 +1689,16 @@ class TestOther : public TestFixture {
         ASSERT_EQUALS("[test.cpp:2]: (style) The scope of the variable 'i' can be reduced.\n", errout_str());
     }
 
+    void varScope38() {
+        checkP("bool dostuff();\n" // #12519
+               "#define DOSTUFF(c) if (c < 5) { if (c) b = dostuff(); }\n"
+               "#define DOSTUFFEX(c) { bool b = false; DOSTUFF(c); }\n"
+               "void f(int a) {\n"
+               "    DOSTUFFEX(a);\n"
+               "}\n");
+        ASSERT_EQUALS("", errout_str());
+    }
+
 
 #define checkOldStylePointerCast(code) checkOldStylePointerCast_(code, __FILE__, __LINE__)
     void checkOldStylePointerCast_(const char code[], const char* file, int line) {