add tests

Author: ludviggunne

test/testtokenize.cpp

@@ -270,6 +270,10 @@ class TestTokenizer : public TestFixture {
         TEST_CASE(functionAttributeListBefore);
         TEST_CASE(functionAttributeListAfter);
 
+        TEST_CASE(cppMaybeUnusedBefore);
+        TEST_CASE(cppMaybeUnusedAfter);
+        TEST_CASE(cppMaybeUnusedStructuredBinding);
+
         TEST_CASE(splitTemplateRightAngleBrackets);
 
         TEST_CASE(cpp03template1);
@@ -4163,6 +4167,47 @@ class TestTokenizer : public TestFixture {
         ASSERT(func8 && func8->isAttributeNoreturn() && func8->isAttributePure() && func8->isAttributeNothrow() && func8->isAttributeConst());
     }
 
+    void cppMaybeUnusedBefore() {
+        const char code[] = "[[maybe_unused]] int var {};";
+        const char expected[] = "int var { } ;";
+
+        SimpleTokenizer tokenizer(settings0, *this);
+        ASSERT(tokenizer.tokenize(code));
+
+        ASSERT_EQUALS(expected, tokenizer.tokens()->stringifyList(nullptr, false));
+
+        const Token *var = Token::findsimplematch(tokenizer.tokens(), "var");
+        ASSERT(var && var->isAttributeMaybeUnused());
+    }
+
+    void cppMaybeUnusedAfter() {
+        const char code[] = "int var [[maybe_unused]] {};";
+        const char expected[] = "int var { } ;";
+
+        SimpleTokenizer tokenizer(settings0, *this);
+        ASSERT(tokenizer.tokenize(code));
+
+        ASSERT_EQUALS(expected, tokenizer.tokens()->stringifyList(nullptr, false));
+
+        const Token *var = Token::findsimplematch(tokenizer.tokens(), "var");
+        ASSERT(var && var->isAttributeMaybeUnused());
+    }
+
+    void cppMaybeUnusedStructuredBinding() {
+        const char code[] = "[[maybe_unused]] auto [var1, var2] = f();";
+        const char expected[] = "auto [ var1 , var2 ] = f ( ) ;";
+
+        SimpleTokenizer tokenizer(settings0, *this);
+        ASSERT(tokenizer.tokenize(code));
+
+        ASSERT_EQUALS(expected, tokenizer.tokens()->stringifyList(nullptr, false));
+
+        const Token *var1 = Token::findsimplematch(tokenizer.tokens(), "var1");
+        ASSERT(var1 && var1->isAttributeMaybeUnused());
+        const Token *var2 = Token::findsimplematch(tokenizer.tokens(), "var2");
+        ASSERT(var2 && var2->isAttributeMaybeUnused());
+    }
+
 
     void splitTemplateRightAngleBrackets() {
         {

test/testunusedvar.cpp

@@ -71,6 +71,7 @@ class TestUnusedVar : public TestFixture {
         TEST_CASE(structmember26); // #13345
         TEST_CASE(structmember27); // #13367
         TEST_CASE(structmember28);
+        TEST_CASE(structmember29); // #14130
         TEST_CASE(structmember_macro);
         TEST_CASE(structmember_template_argument); // #13887 - do not report that member used in template argument is unused
         TEST_CASE(classmember);
@@ -2010,6 +2011,15 @@ class TestUnusedVar : public TestFixture {
         ASSERT_EQUALS("[test.cpp:2:18]: (style) struct member 'S::a' is never used. [unusedStructMember]\n", errout_str());
     }
 
+    void structmember29() { // #14130
+        checkStructMemberUsage("struct S\n"
+                               "{\n"
+                               "    [[maybe_unused]] int i1{};\n"
+                               "    int i2 [[maybe_unused]] {};\n"
+                               "};\n");
+        ASSERT_EQUALS("", errout_str());
+    }
+
     void structmember_macro() {
         checkStructMemberUsageP("#define S(n) struct n { int a, b, c; };\n"
                                 "S(unused);\n");