18 lines
513 B
C
18 lines
513 B
C
|
// RUN: %clang_cc1 -analyze -analyzer-checker=core -analyzer-store=region -analyzer-constraints=range -verify -Wno-unreachable-code -ffreestanding %s
|
||
|
|
|
||
|
|
#include <stdint.h>
|
||
|
|
|
||
|
|
void f1(int * p) {
|
||
|
|
|
||
|
|
// This branch should be infeasible
|
||
|
|
// because __imag__ p is 0.
|
||
|
|
if (!p && __imag__ (intptr_t) p)
|
||
|
|
*p = 1; // no-warning
|
||
|
|
|
||
|
|
// If p != 0 then this branch is feasible; otherwise it is not.
|
||
|
|
if (__real__ (intptr_t) p)
|
||
|
|
*p = 1; // no-warning
|
||
|
|
|
||
|
|
*p = 2; // expected-warning{{Dereference of null pointer}}
|
||
|
|
}
|