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/* run.config*
STDOPT: #"-unspecified-access"
STDOPT: #"-no-unspecified-access"
*/
/* detection of undefined behavior for read/write accesses
in unspecified order
*/
int G[10]; volatile int c;
int f (int x) { return x+1;}
int g (int x) { return x+2;}
int r, H;
int h(int i)
{
if (c) r = r++; //UB
i = r++; //Not UB
H = i;
return i;
}
int func(int x, int y) { return x + y; }
//volatile int c;
int ub_ret(void) {
int d = 5;
return d + (d=0); // UB
}
int main (int a) {
int x, *y, i,j;
x = 0;
y = &x;
if (c) i=(x=0)+(*y=1); // UB
for (i=0; i < 10; i++) G[i] = i;
i=j=0;
while (j<10 && i<10) G[j++] = G[i++];
i=j=0;
while (j<10 && i<10) G[j++] += G[i++];
i=j=0;
if (c) {
while(j<9 && i<9) {
if (c) G[j] = G[j++]; // UB
if (c) G[i++] = G[i]; // UB
}}
i=j=0;
if (c) {
while(j<9 && i<9) {
if (c) G[j] += G[j++]; // UB
if (c) G[i++] += G[i]; // UB
}}
if (c) i = f(g(3)+x) + x++; //UB
*y = f(g(3)+x); // no UB: x is read to write to x (through an alias)
if (a)
r = h(1) + h(2); // missing alarm!
y = &G[2];
*y = (G[2] < (func((0U ||
(((G[2] ^ G[2]) <= G[2]) < ((*y) || G[2]))), 5)));
int (*my_f) (int) = f;
if (c) G[9] = ub_ret();
return (c ? (my_f=g, f(1)) + my_f(2) : 0);
}
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