145 lines
3.6 KiB
145 lines
3.6 KiB
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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/* Test for passing function attributes to infer via annotate attribute */
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#define INFER_MODEL_AS_DEREF_FIRST_ARG \
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__attribute__((annotate("__infer_replace_with_deref_first_arg"))) {}
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namespace infer_traits {
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template <class T>
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class TranslateAsType {};
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} // namespace infer_traits
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// basic test of C function with __infer_replace_with_deref_first_arg attribute
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int derefFirstArg(int* a, int* b) INFER_MODEL_AS_DEREF_FIRST_ARG;
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// test directly with annotate attribute
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int derefFirstArg2(int* a, int* b)
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__attribute__((annotate("__infer_replace_with_deref_first_arg"))) {
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/* equivalent in real code:
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return *a; */
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return *b; // body is in conflict with the attribute, attribute semantics
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// should be used
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}
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// test with wrong annotate attribute
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int derefFirstArg3(int* a, int* b) __attribute__((annotate("__infer_typo"))) {
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/* equivalent in real code: */
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return *b; // there isn't any known attribute with this name, use semantics
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// from the body
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}
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int derefFirstArg_null_deref() {
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int a = 0;
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return derefFirstArg(nullptr, &a);
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}
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int derefFirstArg_ok_deref() {
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int a = 0;
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return derefFirstArg(&a, nullptr);
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}
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int derefFirstArg2_null_deref() {
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int a = 0;
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return derefFirstArg2(nullptr, &a);
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}
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int derefFirstArg2_ok_deref() {
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int a = 0;
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return derefFirstArg2(&a, nullptr);
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}
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int derefFirstArg3_ok_deref() {
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int a = 0;
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return derefFirstArg3(nullptr, &a);
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}
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int derefFirstArg3_null_deref() {
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int a = 0;
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return derefFirstArg3(&a, nullptr);
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}
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// more involving test of __infer_replace_with_deref_first_arg attribute in
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// context of C++
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// methods
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/* This class be translated as T* by infer frontend - same as shared_ptr
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This class has different API in order to better test __deprecated__ attribute
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handling by the frontend. */
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template <class T>
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struct TranslateAsPtr {
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friend class infer_traits::TranslateAsType<T*>;
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TranslateAsPtr(T* t = nullptr) { setPtr(t); }
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/* calls to those functions are supposed to be translated as `*this` */
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T* getPtr() INFER_MODEL_AS_DEREF_FIRST_ARG;
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T* getPtr(int a, int b) INFER_MODEL_AS_DEREF_FIRST_ARG;
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/* calls to those functions are supposed to be translated as `**this` */
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T& operator*() INFER_MODEL_AS_DEREF_FIRST_ARG;
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T& getRef() INFER_MODEL_AS_DEREF_FIRST_ARG;
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T& getRef(int a, int b) INFER_MODEL_AS_DEREF_FIRST_ARG;
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// same trick we do for setting value of shared_ptr, look there for details
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void setPtr(T* v) { *((void**)(this)) = v; }
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};
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int getPtr_null_deref1() {
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TranslateAsPtr<int> t;
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t.setPtr(nullptr);
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return *t.getPtr();
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}
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int getPtr_null_deref2() {
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TranslateAsPtr<int> t;
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t.setPtr(nullptr);
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return *t.getPtr(1, 2);
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}
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int getPtr_ok_deref() {
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int a = 0;
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TranslateAsPtr<int> t;
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t.setPtr(&a);
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return *t.getPtr();
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}
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int operator_star_null_deref1() {
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TranslateAsPtr<int> t;
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t.setPtr(nullptr);
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return *t; // call operator* via operator call
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}
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int operator_star_null_deref2() {
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TranslateAsPtr<int> t;
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t.setPtr(nullptr);
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return t.operator*(); // call operator* via regular method call
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}
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int operator_star_ok_deref() {
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int a;
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TranslateAsPtr<int> t;
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t.setPtr(&a);
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return t.operator*(); // call operator* via regular method call
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}
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int getRef_null_deref1() {
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TranslateAsPtr<int> t;
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t.setPtr(nullptr);
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return t.getRef();
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}
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int getRef_null_deref2() {
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TranslateAsPtr<int> t;
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t.setPtr(nullptr);
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return t.getRef(1, 2);
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}
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int getRef_ok_deref() {
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int a = 0;
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TranslateAsPtr<int> t;
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t.setPtr(&a);
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return t.getRef();
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}
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