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// RUN: %clang_analyze_cc1 -analyzer-checker=core,debug.ExprInspection -std=c++17 -verify %s
void clang_analyzer_eval(bool);
struct s {
int a;
int b;
};
void a(void) {
s tst;
auto [i, j] = tst;
int x = i; // expected-warning{{Assigned value is garbage or undefined}}
}
void b(void) {
s tst;
tst.a = 1;
auto [i, j] = tst;
clang_analyzer_eval(i == 1); // expected-warning{{TRUE}}
int y = j; // expected-warning{{Assigned value is garbage or undefined}}
}
void c(void) {
s tst;
auto &[i, j] = tst;
int x = i; // expected-warning{{Assigned value is garbage or undefined}}
}
void d(void) {
s tst;
tst.a = 1;
auto &[i, j] = tst;
clang_analyzer_eval(i == 1); // expected-warning{{TRUE}}
i = 2;
clang_analyzer_eval(tst.a == 2); // expected-warning{{TRUE}}
int y = j; // expected-warning{{Assigned value is garbage or undefined}}
}
void e(void) {
s tst;
tst.a = 1;
auto &[i, j] = tst;
clang_analyzer_eval(i == 1); // expected-warning{{TRUE}}
tst.b = 2;
clang_analyzer_eval(j == 2); // expected-warning{{TRUE}}
}
void f(void) {
s tst;
auto &&[i, j] = tst;
int x = i; // expected-warning{{Assigned value is garbage or undefined}}
}
void g(void) {
s tst;
tst.a = 1;
auto &&[i, j] = tst;
clang_analyzer_eval(i == 1); // expected-warning{{TRUE}}
int y = j; // expected-warning{{Assigned value is garbage or undefined}}
}
struct s2 {
int a = 1;
int b = 2;
};
struct s3 {
s x;
s2 y;
};
void h(void) {
s3 tst;
clang_analyzer_eval(tst.y.a == 1); // expected-warning{{TRUE}}
auto [i, j] = tst;
// FIXME: These should be undefined, but we have to fix
// reading undefined from lazy compound values first.
clang_analyzer_eval(i.a); // expected-warning{{UNKNOWN}}
clang_analyzer_eval(i.b); // expected-warning{{UNKNOWN}}
clang_analyzer_eval(j.a == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(j.b == 2); // expected-warning{{TRUE}}
}
void i(void) {
s3 tst;
clang_analyzer_eval(tst.y.a == 1); // expected-warning{{TRUE}}
auto &[i, j] = tst;
j.a = 3;
clang_analyzer_eval(tst.y.a == 3); // expected-warning{{TRUE}}
clang_analyzer_eval(tst.y.b == 2); // expected-warning{{TRUE}}
clang_analyzer_eval(j.b == 2); // expected-warning{{TRUE}}
}
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