224 lines
10 KiB
C
224 lines
10 KiB
C
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// RUN: %clang_cc1 -Wno-unused-value -verify %s
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#define NODEREF __attribute__((noderef))
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struct S {
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int a;
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int b;
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};
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struct S2 {
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int a[2];
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int NODEREF a2[2];
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int *b;
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int NODEREF *b2;
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struct S *s;
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struct S NODEREF *s2;
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};
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int NODEREF *func(int NODEREF *arg) { // expected-note{{arg declared here}}
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int y = *arg; // expected-warning{{dereferencing arg; was declared with a 'noderef' type}}
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return arg;
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}
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void func2(int x) {}
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int test() {
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int NODEREF *p; // expected-note 34 {{p declared here}}
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int *p2;
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int x = *p; // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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x = *((int NODEREF *)p2); // expected-warning{{dereferencing expression marked as 'noderef'}}
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int NODEREF **q;
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int *NODEREF *q2; // expected-note 4 {{q2 declared here}}
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// Indirection
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x = **q; // expected-warning{{dereferencing expression marked as 'noderef'}}
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p2 = *q2; // expected-warning{{dereferencing q2; was declared with a 'noderef' type}}
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**q; // expected-warning{{dereferencing expression marked as 'noderef'}}
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p = *&*q;
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p = **&q;
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q = &**&q;
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p = &*p;
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p = *&p;
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p = &(*p);
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p = *(&p);
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x = **&p; // expected-warning{{dereferencing expression marked as 'noderef'}}
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*p = 2; // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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*q = p; // ok
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**q = 2; // expected-warning{{dereferencing expression marked as 'noderef'}}
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*q2 = p2; // expected-warning{{dereferencing q2; was declared with a 'noderef' type}}
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p = p + 1;
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p = &*(p + 1);
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// Struct member access
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struct S NODEREF *s; // expected-note 3 {{s declared here}}
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x = s->a; // expected-warning{{dereferencing s; was declared with a 'noderef' type}}
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x = (*s).b; // expected-warning{{dereferencing s; was declared with a 'noderef' type}}
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p = &s->a;
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p = &(*s).b;
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// Most things in sizeof() can't actually access memory
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x = sizeof(s->a); // ok
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x = sizeof(*s); // ok
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x = sizeof(s[0]); // ok
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x = sizeof(s->a + (s->b)); // ok
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x = sizeof(int[++s->a]); // expected-warning{{dereferencing s; was declared with a 'noderef' type}}
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// Struct member access should carry NoDeref type information through to an
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// enclosing AddrOf.
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p2 = &s->a; // expected-warning{{casting to dereferenceable pointer removes 'noderef' attribute}}
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p2 = &(*s).a; // expected-warning{{casting to dereferenceable pointer removes 'noderef' attribute}}
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x = *&s->a; // expected-warning{{dereferencing expression marked as 'noderef'}}
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// Nested struct access
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struct S2 NODEREF *s2_noderef; // expected-note 5 {{s2_noderef declared here}}
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p = s2_noderef->a; // ok since result is an array in a struct
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p = (*s2_noderef).a; // ok since result is an array in a struct
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p = s2_noderef->a2; // ok
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p = s2_noderef->b; // expected-warning{{dereferencing s2_noderef; was declared with a 'noderef' type}}
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p = s2_noderef->b2; // expected-warning{{dereferencing s2_noderef; was declared with a 'noderef' type}}
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s = s2_noderef->s; // expected-warning{{dereferencing s2_noderef; was declared with a 'noderef' type}}
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s = s2_noderef->s2; // expected-warning{{dereferencing s2_noderef; was declared with a 'noderef' type}}
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p = s2_noderef->a + 1;
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struct S2 *s2;
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p = s2->a;
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p = s2->a2;
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p = s2->b;
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p = s2->b2;
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s = s2->s;
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s = s2->s2;
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&(*(*s2).s2).b;
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// Subscript access
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x = p[1]; // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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x = q[0][0]; // expected-warning{{dereferencing expression marked as 'noderef'}}
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p2 = q2[0]; // expected-warning{{dereferencing q2; was declared with a 'noderef' type}}
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p = q[*p]; // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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x = p[*p]; // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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// expected-warning@-1{{dereferencing p; was declared with a 'noderef' type}}
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int NODEREF arr[10]; // expected-note 1 {{arr declared here}}
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x = arr[1]; // expected-warning{{dereferencing arr; was declared with a 'noderef' type}}
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int NODEREF *(arr2[10]);
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int NODEREF *elem = *arr2;
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int NODEREF(*arr3)[10];
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elem = *arr3;
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// Combinations between indirection, subscript, and member access
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struct S2 NODEREF *s2_arr[10];
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struct S2 NODEREF *s2_arr2[10][10];
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p = s2_arr[1]->a;
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p = s2_arr[1]->b; // expected-warning{{dereferencing expression marked as 'noderef'}}
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int *NODEREF *bptr = &s2_arr[1]->b;
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x = s2->s2->a; // expected-warning{{dereferencing expression marked as 'noderef'}}
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x = s2_noderef->a[1]; // expected-warning{{dereferencing s2_noderef; was declared with a 'noderef' type}}
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p = &s2_noderef->a[1];
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// Casting to dereferenceable pointer
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p2 = p; // expected-warning{{casting to dereferenceable pointer removes 'noderef' attribute}}
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p2 = *q; // expected-warning{{casting to dereferenceable pointer removes 'noderef' attribute}}
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p2 = q[0]; // expected-warning{{casting to dereferenceable pointer removes 'noderef' attribute}}
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s2 = s2_arr[1]; // expected-warning{{casting to dereferenceable pointer removes 'noderef' attribute}}
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s2 = s2_arr2[1][1]; // expected-warning{{casting to dereferenceable pointer removes 'noderef' attribute}}
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p2 = p, p2 = *q; // expected-warning 2 {{casting to dereferenceable pointer removes 'noderef' attribute}}
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// typedefs
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typedef int NODEREF *ptr_t;
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ptr_t ptr; // expected-note 2 {{ptr declared here}}
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ptr_t *ptr2;
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*ptr; // expected-warning{{dereferencing ptr; was declared with a 'noderef' type}}
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*ptr2;
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**ptr2; // expected-warning{{dereferencing expression marked as 'noderef'}}
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typedef struct S2 NODEREF *s2_ptr_t;
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s2_ptr_t s2_ptr; // expected-note 4 {{s2_ptr declared here}}
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s2_ptr->a; // ok since result is an array in a struct
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s2_ptr->a2; // ok
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s2_ptr->b; // expected-warning{{dereferencing s2_ptr; was declared with a 'noderef' type}}
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s2_ptr->b2; // expected-warning{{dereferencing s2_ptr; was declared with a 'noderef' type}}
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s2_ptr->s; // expected-warning{{dereferencing s2_ptr; was declared with a 'noderef' type}}
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s2_ptr->s2; // expected-warning{{dereferencing s2_ptr; was declared with a 'noderef' type}}
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s2_ptr->a + 1;
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typedef int(int_t);
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typedef int_t NODEREF *(noderef_int_t);
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typedef noderef_int_t *noderef_int_nested_t;
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noderef_int_nested_t noderef_int_nested_ptr;
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*noderef_int_nested_ptr;
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**noderef_int_nested_ptr; // expected-warning{{dereferencing expression marked as 'noderef'}}
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typedef int_t *(NODEREF noderef_int2_t);
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typedef noderef_int2_t *noderef_int2_nested_t;
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noderef_int2_nested_t noderef_int2_nested_ptr; // expected-note{{noderef_int2_nested_ptr declared here}}
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*noderef_int2_nested_ptr; // expected-warning{{dereferencing noderef_int2_nested_ptr; was declared with a 'noderef' type}}
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typedef int_t *(noderef_int3_t);
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typedef noderef_int3_t(NODEREF(*(noderef_int3_nested_t)));
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noderef_int3_nested_t noderef_int3_nested_ptr; // expected-note{{noderef_int3_nested_ptr declared here}}
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*noderef_int3_nested_ptr; // expected-warning{{dereferencing noderef_int3_nested_ptr; was declared with a 'noderef' type}}
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// Parentheses
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(((*((p))))); // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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(*(*(&(p)))); // expected-warning{{dereferencing expression marked as 'noderef'}}
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(p[1]); // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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(q[0]); // ok
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(q[0][0]); // expected-warning{{dereferencing expression marked as 'noderef'}}
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(q2[0]); // expected-warning{{dereferencing q2; was declared with a 'noderef' type}}
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(q[(*(p))]); // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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(p[(*(p))]); // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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// expected-warning@-1{{dereferencing p; was declared with a 'noderef' type}}
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(*(ptr)); // expected-warning{{dereferencing ptr; was declared with a 'noderef' type}}
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(*(ptr2));
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(*(*(ptr2))); // expected-warning{{dereferencing expression marked as 'noderef'}}
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// Functions
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x = *(func(p)); // expected-warning{{dereferencing expression marked as 'noderef'}}
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// Casting is ok
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q = (int NODEREF **)&p;
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q = (int NODEREF **)&p2;
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q = &p;
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q = &p2;
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x = s2->s2->a; // expected-warning{{dereferencing expression marked as 'noderef'}}
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// Other expressions
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func2(*p); // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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func2(*p + 1); // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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func2(!*p); // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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func2((x = *p)); // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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func2((char)(*p)); // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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// Other statements
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if (*p) {} // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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else if (*p) {} // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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switch (*p){} // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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for (*p; *p; *p){} // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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// expected-warning@-1{{dereferencing p; was declared with a 'noderef' type}}
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// expected-warning@-2{{dereferencing p; was declared with a 'noderef' type}}
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for (*p; *p;){} // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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// expected-warning@-1{{dereferencing p; was declared with a 'noderef' type}}
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for (*p;; *p){} // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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// expected-warning@-1{{dereferencing p; was declared with a 'noderef' type}}
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for (; *p; *p){} // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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// expected-warning@-1{{dereferencing p; was declared with a 'noderef' type}}
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for (*p;;){} // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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for (;*p;){} // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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for (;;*p){} // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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while (*p){} // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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do {} while (*p); // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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return *p; // expected-warning{{dereferencing p; was declared with a 'noderef' type}}
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}
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