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TestValueFlow: Remove redundant test configuration, make settings const #8776

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9d4d564
Remove redundant test configuration
chrchr-github Aug 5, 2026
ea723c2
Update testvalueflow.cpp
chrchr-github Aug 5, 2026
5443cd4
const
web-flow Aug 5, 2026
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45 changes: 17 additions & 28 deletions test/testvalueflow.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -43,16 +43,9 @@ class TestValueFlow : public TestFixture {
TestValueFlow() : TestFixture("TestValueFlow") {}

private:
/*const*/ Settings settings = settingsBuilder().library("std.cfg").build();
const Settings settings = settingsBuilder().library("std.cfg").build();

void run() override {
// strcpy, abort cfg
constexpr char cfg[] = "<?xml version=\"1.0\"?>\n"
"<def>\n"
" <function name=\"strcpy\"> <arg nr=\"1\"><not-null/></arg> </function>\n"
" <function name=\"abort\"> <noreturn>true</noreturn> </function>\n" // abort is a noreturn function
"</def>";
settings = settingsBuilder(settings).libraryxml(cfg).build();

mNewTemplate = true;
TEST_CASE(valueFlowNumber);
Expand Down Expand Up @@ -437,9 +430,10 @@ class TestValueFlow : public TestFixture {
return false;
}

bool testValueOfX_(const char* file, int line, const char code[], unsigned int linenr, int value, ValueFlow::Value::ValueType type) {
bool testValueOfX_(const char* file, int line, const char code[], unsigned int linenr, int value, ValueFlow::Value::ValueType type, const Settings* s = nullptr) {
const Settings& curSettings = s ? *s : settings;
// Tokenize..
SimpleTokenizer tokenizer(settings, *this);
SimpleTokenizer tokenizer(curSettings, *this);
ASSERT_LOC(tokenizer.tokenize(code), file, line);

for (const Token *tok = tokenizer.tokens(); tok; tok = tok->next()) {
Expand Down Expand Up @@ -5871,21 +5865,19 @@ class TestValueFlow : public TestFixture {
ASSERT_EQUALS(false, value.isKnown());

// #13959
const Settings settingsOld = settings;
settings.standards.c = Standards::C23;
const Settings settingsC23 = settingsBuilder(settings).c(Standards::C23).build();
code = "void f(int* p) {\n"
" if (p == nullptr)\n"
" return;\n"
" if (p) {}\n"
"}\n";
value = valueOfTok(code, "p ) { }", &settings, /*cpp*/ false);
value = valueOfTok(code, "p ) { }", &settingsC23, /*cpp*/ false);
ASSERT_EQUALS(1, value.intvalue);
ASSERT_EQUALS(true, value.isKnown());

settings.standards.c = Standards::C17;
value = valueOfTok(code, "p ) { }", &settings, /*cpp*/ false);
const Settings settingsC17 = settingsBuilder(settings).c(Standards::C17).build();
value = valueOfTok(code, "p ) { }", &settingsC17, /*cpp*/ false);
ASSERT(value == ValueFlow::Value());
settings = settingsOld;
}

void valueFlowSizeofForwardDeclaredEnum() {
Expand Down Expand Up @@ -7754,56 +7746,55 @@ class TestValueFlow : public TestFixture {
void valueFlowDynamicBufferSize() {
const char *code;

const Settings settingsOld = settings; // TODO: get rid of this
settings = settingsBuilder(settings).library("posix.cfg").library("bsd.cfg").build();
const Settings settingsCfg = settingsBuilder(settings).library("posix.cfg").library("bsd.cfg").build();

code = "void* f() {\n"
" void* x = malloc(10);\n"
" return x;\n"
"}";
ASSERT_EQUALS(true, testValueOfX(code, 3U, 10, ValueFlow::Value::ValueType::BUFFER_SIZE));
ASSERT_EQUALS(true, testValueOfX(code, 3U, 10, ValueFlow::Value::ValueType::BUFFER_SIZE, &settingsCfg));

code = "void* f() {\n"
" void* x = calloc(4, 5);\n"
" return x;\n"
"}";
ASSERT_EQUALS(true, testValueOfX(code, 3U, 20, ValueFlow::Value::ValueType::BUFFER_SIZE));
ASSERT_EQUALS(true, testValueOfX(code, 3U, 20, ValueFlow::Value::ValueType::BUFFER_SIZE, &settingsCfg));

code = "void* f() {\n"
" const char* y = \"abcd\";\n"
" const char* x = strdup(y);\n"
" return x;\n"
"}";
ASSERT_EQUALS(true, testValueOfX(code, 4U, 5, ValueFlow::Value::ValueType::BUFFER_SIZE));
ASSERT_EQUALS(true, testValueOfX(code, 4U, 5, ValueFlow::Value::ValueType::BUFFER_SIZE, &settingsCfg));

code = "void* f() {\n"
" void* y = malloc(10);\n"
" void* x = realloc(y, 20);\n"
" return x;\n"
"}";
ASSERT_EQUALS(true, testValueOfX(code, 4U, 20, ValueFlow::Value::ValueType::BUFFER_SIZE));
ASSERT_EQUALS(true, testValueOfX(code, 4U, 20, ValueFlow::Value::ValueType::BUFFER_SIZE, &settingsCfg));

code = "void* f() {\n"
" void* y = calloc(10, 4);\n"
" void* x = reallocarray(y, 20, 5);\n"
" return x;\n"
"}";
ASSERT_EQUALS(true, testValueOfX(code, 4U, 100, ValueFlow::Value::ValueType::BUFFER_SIZE));
ASSERT_EQUALS(true, testValueOfX(code, 4U, 100, ValueFlow::Value::ValueType::BUFFER_SIZE, &settingsCfg));

code = "struct A {};\n" // #14305
"void* f() {\n"
" A* x = new A();\n"
" return x;\n"
"}";
ASSERT_EQUALS(true, testValueOfX(code, 4U, 1, ValueFlow::Value::ValueType::BUFFER_SIZE));
ASSERT_EQUALS(true, testValueOfX(code, 4U, 1, ValueFlow::Value::ValueType::BUFFER_SIZE, &settingsCfg));

code = "struct A {};\n"
"void* f() {\n"
" void* x = new A;\n"
" return x;\n"
"}";
{
auto values = tokenValues(code, "x ; }");
auto values = tokenValues(code, "x ; }", &settingsCfg);
ASSERT_EQUALS(1, values.size());
ASSERT(values.front().isSymbolicValue());
// TODO: add BUFFER_SIZE value = 1
Expand All @@ -7814,9 +7805,7 @@ class TestValueFlow : public TestFixture {
" B* x = new B();\n"
" return x;\n"
"}";
ASSERT_EQUALS(true, testValueOfX(code, 4U, 4, ValueFlow::Value::ValueType::BUFFER_SIZE));

settings = settingsOld;
ASSERT_EQUALS(true, testValueOfX(code, 4U, 4, ValueFlow::Value::ValueType::BUFFER_SIZE, &settingsCfg));
}

void valueFlowSafeFunctionParameterValues() {
Expand Down
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