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typedef int int_array [10] ;
void instr(){
//@ ghost int x ;
//@ ghost int \ghost* p ;
//@ ghost int arr[10] ;
//@ ghost x = 1 ;
//@ ghost *p = 1 ;
//@ ghost arr[0] = 1 ;
}
void named(void){
//@ ghost int_array a ;
//@ ghost a[0] = 42 ;
}
struct Type {
int field ;
} ;
void field_access(){
struct Type ng_var ;
//@ ghost struct Type g_var ;
ng_var.field = 42 ;
//@ ghost g_var.field = 42 ;
}
void nested(void){
/*@ ghost
int * * ptrp ;
int * \ghost * ptrpg ;
int \ghost * \ghost * ptrpgg ;
int arra[10][10] ;
int * arrp[10] ;
int \ghost * arrpg[10] ;
int (* ptra)[10] ;
int \ghost (* ptrag) [10] ;
*/
// ALLOWED
/*@ ghost
ptrp = 0 ;
ptrpg = 0 ;
*ptrpg = 0 ;
ptrpgg = 0 ;
*ptrpgg = 0 ;
**ptrpgg = 1 ;
arra[0][0] = 1 ;
arrp[0] = 0 ;
arrpg[0] = 0 ;
*arrpg[0] = 1 ;
ptra = 0 ;
ptrag = 0 ;
(*ptrag)[0] = 1 ;
*/
}
void assigns_clause(void){
//@ ghost int *p ;
/*@ loop assigns p, i ; */
for(int i = 0; i < 10; i++);
/*@ ghost
/@ loop assigns p, i ; @/
for(int i = 0; i < 10; i++);
*/
}
/*@ ghost
/@ assigns *p ; @/
void g_decl_star(int \ghost *p);
/@ assigns *p ; @/
void g_def_star(int \ghost *p){
}
*/
// Note: this should be accepted as the pointer might point to a
// memory location which is indeed assigned by the actual code.
/*@ assigns *p ; */
void ng_decl_star(void) /*@ ghost (int \ghost *p) */ ;
/*@ assigns *p ; */
void ng_def_star(void) /*@ ghost (int \ghost *p) */ {
}
/*@ assigns *p ; */
void ng_decl_star_ng(void) /*@ ghost (int *p) */ ;
/*@ assigns *p ; */
void ng_def_star_ng(void) /*@ ghost (int *p) */ {
}
void assigns_loop_star(){
//@ ghost int \ghost *p ;
/*@ loop assigns *p, i ; */
for(int i = 0; i < 10; i++);
/*@ ghost
/@ loop assigns *p, i ; @/
for(int i = 0; i < 10; i++);
*/
}
/*@ ghost
/@ assigns p[ 0 .. max ] ; @/
void g_decl_set(int \ghost *p, int max);
/@ assigns p[ 0 .. max ] ; @/
void g_def_set(int \ghost *p, int max){
}
*/
/*@ assigns p[ 0 .. max ] ; */
void ng_decl_set(int max) /*@ ghost (int \ghost *p) */ ;
/*@ assigns p[ 0 .. max ] ; */
void ng_def_set(int max) /*@ghost (int \ghost *p) */ {
}
/*@ assigns p[ 0 .. max ] ; */
void ng_decl_set_ng(int max) /*@ ghost (int \ghost *p) */ ;
/*@ assigns p[ 0 .. max ] ; */
void ng_def_set_ng(int max) /*@ghost (int \ghost *p) */ {
}
void assigns_loop_set(){
//@ ghost int \ghost *p ;
int max = 42 ;
/*@ loop assigns p[ 0 .. max ], i ; */
for(int i = 0; i < 10; i++);
/*@ ghost
/@ loop assigns p[ 0 .. max ], i ; @/
for(int i = 0; i < 10; i++);
*/
}
/*@ ghost
/@ assigns \nothing ; @/
void ghost_decl_nothing(int * a) ;
/@ assigns *a ; @/
void ghost_decl_valid_a(int \ghost * a) ;
void ghost_def_nothing(int * a){
int x = *a ;
}
void ghost_def_valid_a(int \ghost * a){
*a = 42 ;
}
*/
void assigns_nothing_or_correct(void){
int ng ;
//@ ghost ghost_decl_nothing(&ng);
//@ ghost ghost_def_nothing(&ng);
//@ ghost int g ;
//@ ghost ghost_decl_valid_a(&g);
//@ ghost ghost_def_valid_a(&g);
}
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