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// RUN: %check_clang_tidy %s cppcoreguidelines-init-variables -fix-errors %t -- -- -fno-delayed-template-parsing -fexceptions
// CHECK-FIXES: {{^}}#include <math.h>
// Ensure that function declarations are not changed.
void some_func(int x, double d, bool b, const char *p);
// Ensure that function arguments are not changed
int identity_function(int x) {
return x;
}
int do_not_modify_me;
static int should_not_be_initialized;
extern int should_not_be_initialized2;
typedef struct {
int unaltered1;
int unaltered2;
} UnusedStruct;
typedef int my_int_type;
#define MACRO_INT int
#define FULL_DECLARATION() int macrodecl;
template <typename T>
void template_test_function() {
T t;
int uninitialized;
// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'uninitialized' is not initialized [cppcoreguidelines-init-variables]
// CHECK-FIXES: {{^}} int uninitialized = 0;{{$}}
}
void init_unit_tests() {
int x;
// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'x' is not initialized [cppcoreguidelines-init-variables]
// CHECK-FIXES: {{^}} int x = 0;{{$}}
my_int_type myint;
// CHECK-MESSAGES: :[[@LINE-1]]:15: warning: variable 'myint' is not initialized [cppcoreguidelines-init-variables]
// CHECK-FIXES: {{^}} my_int_type myint = 0;{{$}}
MACRO_INT macroint;
// CHECK-MESSAGES: :[[@LINE-1]]:13: warning: variable 'macroint' is not initialized [cppcoreguidelines-init-variables]
// CHECK-FIXES: {{^}} MACRO_INT macroint = 0;{{$}}
FULL_DECLARATION();
int x0 = 1, x1, x2 = 2;
// CHECK-MESSAGES: :[[@LINE-1]]:15: warning: variable 'x1' is not initialized [cppcoreguidelines-init-variables]
// CHECK-FIXES: {{^}} int x0 = 1, x1 = 0, x2 = 2;{{$}}
int y0, y1 = 1, y2;
// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'y0' is not initialized [cppcoreguidelines-init-variables]
// CHECK-MESSAGES: :[[@LINE-2]]:19: warning: variable 'y2' is not initialized [cppcoreguidelines-init-variables]
// CHECK-FIXES: {{^}} int y0 = 0, y1 = 1, y2 = 0;{{$}}
int hasval = 42;
float f;
// CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'f' is not initialized [cppcoreguidelines-init-variables]
// CHECK-FIXES: {{^}} float f = NAN;{{$}}
float fval = 85.0;
double d;
// CHECK-MESSAGES: :[[@LINE-1]]:10: warning: variable 'd' is not initialized [cppcoreguidelines-init-variables]
// CHECK-FIXES: {{^}} double d = NAN;{{$}}
double dval = 99.0;
bool b;
// CHECK-MESSAGES: :[[@LINE-1]]:8: warning: variable 'b' is not initialized [cppcoreguidelines-init-variables]
// CHECK-FIXES: {{^}} bool b = false;{{$}}
bool bval = true;
const char *ptr;
// CHECK-MESSAGES: :[[@LINE-1]]:15: warning: variable 'ptr' is not initialized [cppcoreguidelines-init-variables]
// CHECK-FIXES: {{^}} const char *ptr = nullptr;{{$}}
const char *ptrval = "a string";
UnusedStruct u;
static int does_not_need_an_initializer;
extern int does_not_need_an_initializer2;
int parens(42);
int braces{42};
}
template <typename RANGE>
void f(RANGE r) {
for (char c : r) {
}
}
void catch_variable_decl() {
// Expect no warning given here.
try {
} catch (int X) {
}
}
enum Color { Red,
Green,
Blue };
enum Car { Benz,
BMW = 20,
Audi = BMW + 2 };
enum Gender : char { Male,
Female };
enum class Direction { Up,
Down,
Left,
Right };
enum class Fruit : int { Apple,
Orange };
void uninitialized_enum() {
Color color;
// CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'color' is not initialized [cppcoreguidelines-init-variables]
Car car;
// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'car' is not initialized [cppcoreguidelines-init-variables]
Gender gender;
// CHECK-MESSAGES: :[[@LINE-1]]:10: warning: variable 'gender' is not initialized [cppcoreguidelines-init-variables]
Direction direction;
// CHECK-MESSAGES: :[[@LINE-1]]:13: warning: variable 'direction' is not initialized [cppcoreguidelines-init-variables]
Fruit fruit;
// CHECK-MESSAGES: :[[@LINE-1]]:9: warning: variable 'fruit' is not initialized [cppcoreguidelines-init-variables]
}
void test_clang_diagnostic_error() {
int a;
// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: variable 'a' is not initialized [cppcoreguidelines-init-variables]
// CHECK-FIXES: {{^}} int a = 0;{{$}}
UnknownType b;
// CHECK-MESSAGES: :[[@LINE-1]]:3: error: unknown type name 'UnknownType' [clang-diagnostic-error]
// CHECK-FIXES-NOT: {{^}} UnknownType b = 0;{{$}}
}
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