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// RUN: %check_clang_tidy %s bugprone-casting-through-void %t
using V = void*;
using CV = const void*;
int i = 100;
double d = 100;
const int ci = 100;
const double cd = 100;
void normal_test() {
static_cast<int *>(static_cast<void *>(&d));
// CHECK-MESSAGES: :[[@LINE-1]]:22: warning: do not cast 'double *' to 'int *' through 'void *' [bugprone-casting-through-void]
static_cast<int *>(static_cast<V>(&d));
// CHECK-MESSAGES: :[[@LINE-1]]:22: warning: do not cast 'double *' to 'int *' through 'V' (aka 'void *') [bugprone-casting-through-void]
static_cast<int *>(static_cast<void *>(&i));
// CHECK-MESSAGES: :[[@LINE-1]]:22: warning: do not cast 'int *' to 'int *' through 'void *' [bugprone-casting-through-void]
static_cast<void *>(static_cast<void *>(&i));
}
void const_pointer_test() {
static_cast<int *const>(static_cast<void *>(&d));
// CHECK-MESSAGES: :[[@LINE-1]]:27: warning: do not cast 'double *' to 'int *const' through 'void *' [bugprone-casting-through-void]
static_cast<int *const>(static_cast<V>(&d));
// CHECK-MESSAGES: :[[@LINE-1]]:27: warning: do not cast 'double *' to 'int *const' through 'V' (aka 'void *') [bugprone-casting-through-void]
static_cast<int *const>(static_cast<void *>(&i));
// CHECK-MESSAGES: :[[@LINE-1]]:27: warning: do not cast 'int *' to 'int *const' through 'void *' [bugprone-casting-through-void]
static_cast<void *const>(static_cast<void *>(&i));
}
void const_test() {
static_cast<const int *>(static_cast<const void *>(&d));
// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: do not cast 'double *' to 'const int *' through 'const void *' [bugprone-casting-through-void]
static_cast<const int *>(static_cast<const V>(&d));
// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: do not cast 'double *' to 'const int *' through 'const V' (aka 'void *const') [bugprone-casting-through-void]
static_cast<const int *>(static_cast<const void *>(&i));
// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: do not cast 'int *' to 'const int *' through 'const void *' [bugprone-casting-through-void]
static_cast<const void *>(static_cast<const void *>(&i));
static_cast<const int *>(static_cast<const void *>(&cd));
// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: do not cast 'const double *' to 'const int *' through 'const void *' [bugprone-casting-through-void]
static_cast<const int *>(static_cast<const CV>(&cd));
// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: do not cast 'const double *' to 'const int *' through 'const CV' (aka 'const void *const') [bugprone-casting-through-void]
static_cast<const int *>(static_cast<const void *>(&ci));
// CHECK-MESSAGES: :[[@LINE-1]]:28: warning: do not cast 'const int *' to 'const int *' through 'const void *' [bugprone-casting-through-void]
static_cast<const void *>(static_cast<const void *>(&ci));
}
void reinterpret_cast_test() {
static_cast<int *>(reinterpret_cast<void *>(&d));
// CHECK-MESSAGES: :[[@LINE-1]]:22: warning: do not cast 'double *' to 'int *' through 'void *' [bugprone-casting-through-void]
reinterpret_cast<int *>(static_cast<void *>(&d));
// CHECK-MESSAGES: :[[@LINE-1]]:27: warning: do not cast 'double *' to 'int *' through 'void *' [bugprone-casting-through-void]
reinterpret_cast<int *>(reinterpret_cast<void *>(&d));
// CHECK-MESSAGES: :[[@LINE-1]]:27: warning: do not cast 'double *' to 'int *' through 'void *' [bugprone-casting-through-void]
static_cast<void *>(reinterpret_cast<void *>(&i));
reinterpret_cast<void *>(reinterpret_cast<void *>(&i));
reinterpret_cast<void *>(static_cast<void *>(&i));
}
void c_style_cast_test() {
static_cast<int *>((void *)&d);
// CHECK-MESSAGES: :[[@LINE-1]]:22: warning: do not cast 'double *' to 'int *' through 'void *' [bugprone-casting-through-void]
(int *)(void *)&d;
// CHECK-MESSAGES: :[[@LINE-1]]:10: warning: do not cast 'double *' to 'int *' through 'void *' [bugprone-casting-through-void]
static_cast<int *>((void *)&d);
// CHECK-MESSAGES: :[[@LINE-1]]:22: warning: do not cast 'double *' to 'int *' through 'void *' [bugprone-casting-through-void]
static_cast<void *>((void *)&i);
}
struct A {
A(void*);
};
using I = int *;
void cxx_functional_cast() {
A(static_cast<void*>(&d));
I(static_cast<void*>(&d));
// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: do not cast 'double *' to 'I' (aka 'int *') through 'void *' [bugprone-casting-through-void]
}
void bit_cast() {
__builtin_bit_cast(int *, static_cast<void *>(&d));
// CHECK-MESSAGES: :[[@LINE-1]]:29: warning: do not cast 'double *' to 'int *' through 'void *' [bugprone-casting-through-void]
}
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