Merge branch 'feature/kernel/cast-pointer-to-integer' into 'master'

[Kernel] Warns when converting a pointer into an integer without an explicit cast.

Closes #548

See merge request frama-c/frama-c!2172

tests/value/reading_null.i

@@ -51,6 +51,6 @@ void main1(int c){
 
   int X1;
   int* X2;
-  X1 = X2;
+  X1 = (int) X2;
 
 }

tests/value/struct3.i

@@ -43,5 +43,5 @@ void main () {
 
   s2 = s1; // Creates a garbled mix internally; make sure not to log it
 
-  s2.a = s2.c + (int) s2.c; // creates a garbled mix in the struct
+  s2.a = (int) (s2.c + (int) s2.c); // creates a garbled mix in the struct
 }

tests/value/struct_array.i

@@ -12,7 +12,7 @@ struct st1 {
 };
 int *outp;
 int x,y,z1,z2,z3,z4;
-struct st1 T[22] = { {1,2,0,&x}, {&z1,&z2,&z3,&y},{&z4,2,0,&x},{1,2,0,&x} };
+struct st1 T[22] = { {1,2,0,&x}, {(int)&z1,(int)&z2,&z3,&y},{(int)&z4,2,0,&x},{1,2,0,&x} };
 
 struct S {
   int a;

tests/value/struct_incl.i

@@ -25,9 +25,9 @@ struct st1 s8,s7;
 long x,y,z,t; volatile int v;
 
 void main () {
-  x = &s1.d[9];
-  y = &s1.d[10];
-  z = &s1.b;
+  x = (long) &s1.d[9];
+  y = (long) &s1.d[10];
+  z = (long) &s1.b;
 
 
   

tests/value/symbolic_locs.i

@@ -51,7 +51,7 @@ void main4_scope_right() {
   unsigned int i = v;  //@ assert i <= 8;
   {
     int x;
-    t[i] = &x;
+    t[i] = (int) &x;
     Frama_C_dump_each();
   }
   Frama_C_dump_each(); // Should be empty, x out-of-scope

tests/value/volatile.c

@@ -80,7 +80,7 @@ int * volatile main2() {
   int * volatile p1, * volatile p2, * volatile p3;
   p1 = G ? 0 : &X;
   p2 = &X;
-  k = G ? 0 : &X;
+  k = G ? 0 : (int) &X;
   p3 = k;
   return k;
 }

tests/value/volatilestruct.c

@@ -28,7 +28,7 @@ void main() {
   char *q1 = p->f4.f1;
   int *q2 = p->f4.f2;
   int i = p->f5;
-  int j = p->f4.f2;
+  int j = (int) p->f4.f2;
 
   int r = (&x - p->f4.f1)+1;
   int s = (&y - p->f4.f2)+3;