llvm-project/clang/test/Analysis/complex.c

21 lines
929 B
C

// RUN: clang-cc -analyze -analyzer-experimental-internal-checks -checker-cfref -analyzer-store=basic -analyzer-constraints=basic -verify %s
// RUN: clang-cc -analyze -analyzer-experimental-internal-checks -checker-cfref -analyzer-store=basic -analyzer-constraints=range -verify %s
// RUN: clang-cc -analyze -analyzer-experimental-internal-checks -checker-cfref -analyzer-store=region -analyzer-constraints=basic -verify %s
// RUN: clang-cc -analyze -analyzer-experimental-internal-checks -checker-cfref -analyzer-store=region -analyzer-constraints=range -verify %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}}
}