ad7ac964e5
This patch adds the noderef attribute in clang and checks for dereferences of types that have this attribute. This attribute is currently used by sparse and would like to be ported to clang. Differential Revision: https://reviews.llvm.org/D49511 llvm-svn: 348442
103 lines
3.4 KiB
C++
103 lines
3.4 KiB
C++
// RUN: %clang_cc1 -fblocks -verify %s
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/**
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* Test 'noderef' attribute with c++ constructs.
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*/
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#define NODEREF __attribute__((noderef))
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void Normal() {
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int NODEREF i; // expected-warning{{'noderef' can only be used on an array or pointer type}}
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int NODEREF *i_ptr; // expected-note 2 {{i_ptr declared here}}
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int NODEREF **i_ptr2; // ok
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int *NODEREF i_ptr3; // expected-warning{{'noderef' can only be used on an array or pointer type}}
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int *NODEREF *i_ptr4; // ok
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auto NODEREF *auto_i_ptr = i_ptr;
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auto NODEREF auto_i = i; // expected-warning{{'noderef' can only be used on an array or pointer type}}
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struct {
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int x;
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int y;
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} NODEREF *s;
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int __attribute__((noderef(10))) * no_args; // expected-error{{'noderef' attribute takes no arguments}}
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int i2 = *i_ptr; // expected-warning{{dereferencing i_ptr; was declared with a 'noderef' type}}
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int &i3 = *i_ptr; // expected-warning{{dereferencing i_ptr; was declared with a 'noderef' type}}
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int *i_ptr5 = i_ptr; // expected-warning{{casting to dereferenceable pointer removes 'noderef' attribute}}
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int *i_ptr6(i_ptr); // expected-warning{{casting to dereferenceable pointer removes 'noderef' attribute}}
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}
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const int NODEREF *const_i_ptr;
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static int NODEREF *static_i_ptr;
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void ParenTypes() {
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int NODEREF(*i_ptr); // ok (same as `int NODEREF *`)
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int NODEREF *(*i_ptr2); // ok (same as `int NODEREF **`)
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}
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// Function declarations
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int NODEREF func(); // expected-warning{{'noderef' can only be used on an array or pointer type}}
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int NODEREF *func2(); // ok (returning pointer)
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typedef int NODEREF (*func3)(int); // expected-warning{{'noderef' can only be used on an array or pointer type}}
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typedef int NODEREF *(*func4)(int);
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void Arrays() {
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int NODEREF i_arr[10]; // ok
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int NODEREF i_arr2[10][10]; // ok
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int NODEREF *i_arr3[10]; // ok
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int NODEREF i_arr4[] = {1, 2};
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}
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void ParenArrays() {
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int NODEREF(i_ptr[10]);
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int NODEREF(i_ptr2[10])[10];
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}
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typedef int NODEREF *(*func5[10])(int);
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// Arguments
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void func6(int NODEREF x); // expected-warning{{'noderef' can only be used on an array or pointer type}}
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void func7(int NODEREF *x);
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void func8() NODEREF;
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void References() {
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int x = 2;
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int NODEREF &y = x; // expected-warning{{'noderef' can only be used on an array or pointer type}}
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int *xp = &x;
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int NODEREF *&a = xp; // ok (reference to a NODEREF *)
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int *NODEREF &b = xp; // expected-warning{{'noderef' can only be used on an array or pointer type}}
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}
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void BlockPointers() {
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typedef int NODEREF (^IntBlock)(); // expected-warning{{'noderef' can only be used on an array or pointer type}}
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}
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class A {
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public:
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int member;
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int NODEREF *member2;
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int NODEREF member3; // expected-warning{{'noderef' can only be used on an array or pointer type}}
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};
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void MemberPointer() {
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int NODEREF A::*var = &A::member; // expected-warning{{'noderef' can only be used on an array or pointer type}}
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}
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template <class Ty>
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class B {
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Ty NODEREF *member;
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Ty NODEREF member2; // expected-warning{{'noderef' can only be used on an array or pointer type}}
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};
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void test_lambdas() {
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auto l = [](int NODEREF *x){ // expected-note{{x declared here}}
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return *x; // expected-warning{{dereferencing x; was declared with a 'noderef' type}}
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};
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}
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int NODEREF *glob_ptr; // expected-note{{glob_ptr declared here}}
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int glob_int = *glob_ptr; // expected-warning{{dereferencing glob_ptr; was declared with a 'noderef' type}}
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