forked from OSchip/llvm-project
62 lines
1.4 KiB
Objective-C
62 lines
1.4 KiB
Objective-C
// RUN: %clang_analyze_cc1 -analyzer-checker=core,debug.ExprInspection -verify %s
|
|
|
|
typedef int __attribute__((ext_vector_type(2))) V;
|
|
|
|
void clang_analyzer_warnIfReached();
|
|
void clang_analyzer_numTimesReached();
|
|
void clang_analyzer_eval(int);
|
|
|
|
int flag;
|
|
|
|
V pass_through_and_set_flag(V v) {
|
|
flag = 1;
|
|
return v;
|
|
}
|
|
|
|
V dont_crash_and_dont_split_state(V x, V y) {
|
|
flag = 0;
|
|
V z = x && pass_through_and_set_flag(y);
|
|
clang_analyzer_eval(flag); // expected-warning{{TRUE}}
|
|
// FIXME: For now we treat vector operator && as short-circuit,
|
|
// but in fact it is not. It should always evaluate
|
|
// pass_through_and_set_flag(). It should not split state.
|
|
// Now we also get FALSE on the other path.
|
|
// expected-warning@-5{{FALSE}}
|
|
|
|
// FIXME: Should be 1 since we should not split state.
|
|
clang_analyzer_numTimesReached(); // expected-warning{{2}}
|
|
return z;
|
|
}
|
|
|
|
void test_read() {
|
|
V x;
|
|
x[0] = 0;
|
|
x[1] = 1;
|
|
|
|
clang_analyzer_eval(x[0] == 0); // expected-warning{{TRUE}}
|
|
}
|
|
|
|
V return_vector() {
|
|
V z;
|
|
z[0] = 0;
|
|
z[1] = 0;
|
|
return z;
|
|
}
|
|
|
|
int test_vector_access() {
|
|
return return_vector()[0]; // no-crash no-warning
|
|
}
|
|
|
|
@interface I
|
|
@property V v;
|
|
@end
|
|
|
|
// Do not crash on subscript operations into ObjC properties.
|
|
int myfunc(I *i2) {
|
|
int out = i2.v[0]; // no-crash no-warning
|
|
|
|
// Check that the analysis continues.
|
|
clang_analyzer_warnIfReached(); // expected-warning{{REACHABLE}}
|
|
return out;
|
|
}
|