clang/test/Analysis/main.c

   1 // RUN: %clang_analyze_cc1 -analyzer-checker=core,debug.ExprInspection -verify %s
   2
   3 int x = 1;
   4
   5 struct {
   6   int a, b;
   7 } s = {2, 3};
   8
   9 int arr[] = {4, 5, 6};
  10
  11 void clang_analyzer_eval(int);
  12
  13 int main(void) {
  14   // In main() we know that the initial values are still valid.
  15   clang_analyzer_eval(x == 1); // expected-warning{{TRUE}}
  16   clang_analyzer_eval(s.a == 2); // expected-warning{{TRUE}}
  17   clang_analyzer_eval(s.b == 3); // expected-warning{{TRUE}}
  18   clang_analyzer_eval(arr[0] == 4); // expected-warning{{TRUE}}
  19   clang_analyzer_eval(arr[1] == 5); // expected-warning{{TRUE}}
  20   clang_analyzer_eval(arr[2] == 6); // expected-warning{{TRUE}}
  21   return 0;
  22 }
  23
  24 void foo(void) {
  25   // In other functions these values may already be overwritten.
  26   clang_analyzer_eval(x == 1); // expected-warning{{TRUE}} // expected-warning{{FALSE}}
  27   clang_analyzer_eval(s.a == 2); // expected-warning{{TRUE}} // expected-warning{{FALSE}}
  28   clang_analyzer_eval(s.b == 3); // expected-warning{{TRUE}} // expected-warning{{FALSE}}
  29   clang_analyzer_eval(arr[0] == 4); // expected-warning{{TRUE}} // expected-warning{{FALSE}}
  30   clang_analyzer_eval(arr[1] == 5); // expected-warning{{TRUE}} // expected-warning{{FALSE}}
  31   clang_analyzer_eval(arr[2] == 6); // expected-warning{{TRUE}} // expected-warning{{FALSE}}
  32 }