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/* run.config*
STDOPT: #"-big-ints-hex 257 -inout-callwise -val-warn-copy-indeterminate=-g6"
*/
#include "__fc_builtin.h"
extern int b1, b2, b3, b4, b5, b6;
//@ ensures \initialized(&t[1..n-2]);
void f(int m, int* t, int n) {
if (m)
for (int i=1;i<n-1;i++)
t[i]=i;
}
volatile rand;
void g1 (){
int t1[20], t2[20], t3[20], t4[20], t5[20], t6[20], i, j;
for (int i=0; i<20; i++)
if (rand) { t1[i]=1; t2[i]=2; t3[i]=3; t4[i]=4; t5[i]=5; t6[i]=6; }
//@ assert \initialized(&t1[..]);
//@ assert \initialized(&t2[4..]);
i=Frama_C_interval(3,6);
j=Frama_C_interval(12,15);
//@ assert \initialized(&t3[i..j]); // under: t3[6..12]; over t3[3..15]
i=Frama_C_interval(3,7);
j=Frama_C_interval(7,15);
//@ assert \initialized(&t4[i..j]); // under t4[7]; over t4[3..15]
i=Frama_C_interval(7,9);
j=Frama_C_interval(4,6);
//@ assert \initialized(&t5[i..j]); // Empty range
i=Frama_C_interval(7,9);
j=Frama_C_interval(4,7);
//@ assert \initialized(&t6[i..j]); // t6[7] or empty
}
void g2() {
int t[14];
if (b4) {
t[0]=0x11223344;
t[1]=t[0];
t[2]=0x55667788;
t[3]=t[2];
if (b5) t[4]=0x12345678; else t[4] = 0x23456789;
t[5]=t[4];
t[6]=(int)&b4+(int)&b4;
t[7]=t[6];
t[8] = b5 ? 1 : 2;
t[9] = t[8];
t[10] = 0;
t[11] = 0;
int *p = (char*)(&t[10])+3;
*p = 0x11111111;
t[12] = 0;
t[13] = 0;
p+=2;
*p = b5 ? 0x11111111: 0x22222222;
}
Frama_C_dump_each();
int *p = ((char*)t)+7;
//@ assert \initialized(p);
Frama_C_dump_each();
Frama_C_show_each(*p); // assert *p == 0x66778811;
//@ assert \initialized(p+2);
//@ assert \initialized(p+4);
//@ assert \initialized(&t[9]);
//@ assert \initialized(&t[11]);
//@ assert \initialized(&t[13]);
}
void g3() {
int r1, x1, x2, r2, x3, r3;
int t1[5];
int t2[250];
if (b1) x1 = 1;
//@ assert \initialized(&x1);
r1 = x1+1;
if (b2)
x2 = r2 + 1;
if (b3) x3 = 1;
r3 = x3 + 1;
f(b6, &t1, 4);
f(b6, &t2, 250); // above plevel. Works because the location is contiguous
}
void g4() {
int x, y, z;
x = y + z; // Do not continue evaluating z after y (or the converse)
// without checking for bottom.
}
struct s {
char a;
int b;
};
/*@ assigns p->a, p->b \from \nothing;
ensures \initialized(p); */ // Wrong because of padding
void wrong_assigns(struct s *p);
struct v {
char a;
char b;
};
struct v v1;
void g5() {
struct s v;
if (rand)
wrong_assigns(&v);
struct v v2;
//@ assert \initialized(&v1);
//@ assert !\initialized(&v2);
struct v *p = rand ? &v1 : &v2;
//@ assert \initialized(p);
}
extern int i6;
void g6() {
int i;
if (rand)
i6 = i; // warn-copy-indeterminate is not set
//@ assert !\initialized(&i6) || i6 >= 3; // Does not work
//@ assert !\initialized(&i6) || i6 >= 3;
//@ assert !\initialized(&i6) || (\initialized(&i6) && i6 >= 3);
//@ assert !\initialized(&i6) || (\initialized(&i6) && i6 >= 3);
//@ assert !\initialized(&i6);
//@ assert !\initialized(&i6);
}
int main () {
g1();
g2();
g3();
if (rand) g4();
g5();
g6();
return 0;
}
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