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