forked from OSchip/llvm-project
65 lines
2.7 KiB
C++
65 lines
2.7 KiB
C++
// RUN: %check_clang_tidy %s bugprone-misplaced-pointer-arithmetic-in-alloc %t
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class C {
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int num;
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public:
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explicit C(int n) : num(n) {}
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};
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void bad_new(int n, int m) {
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C *p = new C(n) + 10;
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// CHECK-MESSAGES: :[[@LINE-1]]:10: warning: arithmetic operation is applied to the result of operator new() instead of its size-like argument
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// CHECK-FIXES: C *p = new C(n + 10);
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p = new C(n) - 10;
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: arithmetic operation is applied to the result of operator new() instead of its size-like argument
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// CHECK-FIXES: p = new C(n - 10);
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p = new C(n) + m;
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: arithmetic operation is applied to the result of operator new() instead of its size-like argument
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// CHECK-FIXES: p = new C(n + m);
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p = new C(n) - (m + 10);
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: arithmetic operation is applied to the result of operator new() instead of its size-like argument
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// CHECK-FIXES: p = new C(n - (m + 10));
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p = new C(n) - m + 10;
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: arithmetic operation is applied to the result of operator new() instead of its size-like argument
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// CHECK-FIXES: p = new C(n - m) + 10;
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// FIXME: Should be p = new C(n - m + 10);
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}
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void bad_new_array(int n, int m) {
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char *p = new char[n] + 10;
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// CHECK-MESSAGES: :[[@LINE-1]]:13: warning: arithmetic operation is applied to the result of operator new[]() instead of its size-like argument
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// CHECK-FIXES: char *p = new char[n + 10];
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p = new char[n] - 10;
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: arithmetic operation is applied to the result of operator new[]() instead of its size-like argument
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// CHECK-FIXES: p = new char[n - 10];
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p = new char[n] + m;
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: arithmetic operation is applied to the result of operator new[]() instead of its size-like argument
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// CHECK-FIXES: p = new char[n + m];
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p = new char[n] - (m + 10);
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: arithmetic operation is applied to the result of operator new[]() instead of its size-like argument
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// CHECK-FIXES: p = new char[n - (m + 10)];
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p = new char[n] - m + 10;
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// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: arithmetic operation is applied to the result of operator new[]() instead of its size-like argument
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// CHECK-FIXES: p = new char[n - m] + 10;
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// FIXME: should be p = new char[n - m + 10];
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}
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namespace std {
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typedef decltype(sizeof(void*)) size_t;
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}
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void* operator new(std::size_t, void*);
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void placement_new_ptr(void *buf, C *old) {
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C **p = new (buf) C*(old) + 1;
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// CHECK-MESSAGES-NOT: :[[@LINE-1]]:11: warning: arithmetic operation is applied to the result of operator new() instead of its size-like argument
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}
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