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// RUN: %clang_cc1 -analyze -analyzer-check-objc-mem -analyzer-store=region -verify %s
struct s {
int data;
};
struct s global;
void g(int);
void f4() {
int a;
if (global.data == 0)
a = 3;
if (global.data == 0) // When the true branch is feasible 'a = 3'.
g(a); // no-warning
}
// Test uninitialized value due to part of the structure being uninitialized.
struct TestUninit { int x; int y; };
struct TestUninit test_uninit_aux();
void test_unit_aux2(int);
void test_uninit_pos() {
struct TestUninit v1 = { 0, 0 };
struct TestUninit v2 = test_uninit_aux();
int z;
v1.y = z; // expected-warning{{Assigned value is garbage or undefined}}
test_unit_aux2(v2.x + v1.y);
}
void test_uninit_pos_2() {
struct TestUninit v1 = { 0, 0 };
struct TestUninit v2;
test_unit_aux2(v2.x + v1.y); // expected-warning{{The left operand of '+' is a garbage value}}
}
void test_uninit_pos_3() {
struct TestUninit v1 = { 0, 0 };
struct TestUninit v2;
test_unit_aux2(v1.y + v2.x); // expected-warning{{The right operand of '+' is a garbage value}}
}
void test_uninit_neg() {
struct TestUninit v1 = { 0, 0 };
struct TestUninit v2 = test_uninit_aux();
test_unit_aux2(v2.x + v1.y); // no-warning
}
extern void test_uninit_struct_arg_aux(struct TestUninit arg);
void test_uninit_struct_arg() {
struct TestUninit x;
test_uninit_struct_arg_aux(x); // expected-warning{{Passed-by-value struct argument contains uninitialized data (e.g., field: 'x')}}
}
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