1 // RUN: %clang_cc1 -analyze -analyzer-checker=core,debug.ExprInspection -verify %s
2 
3 void clang_analyzer_eval(int);
4 #define CHECK(expr) if (!(expr)) return; clang_analyzer_eval(expr)
5 
6 void testPersistentConstraints(int x, int y) {
7   // Sanity check
8   CHECK(x); // expected-warning{{TRUE}}
9   CHECK(x & 1); // expected-warning{{TRUE}}
10 
11   // False positives due to SValBuilder giving up on certain kinds of exprs.
12   CHECK(1 - x); // expected-warning{{UNKNOWN}}
13   CHECK(x & y); // expected-warning{{UNKNOWN}}
14 }