clang/test/Analysis/expr-inspection.cpp

   1 // RUN: %clang_analyze_cc1 -x c++ -analyzer-checker=debug.ExprInspection \
   2 // RUN:    -analyzer-config support-symbolic-integer-casts=false \
   3 // RUN:    -verify %s
   4
   5 // RUN: %clang_analyze_cc1 -x c++ -analyzer-checker=debug.ExprInspection \
   6 // RUN:    -analyzer-config support-symbolic-integer-casts=true \
   7 // RUN:    -verify %s
   8
   9 // Self-tests for the debug.ExprInspection checker.
  10
  11 template <typename T>
  12 void clang_analyzer_denote(T x, const char *str);
  13 template <typename T>
  14 void clang_analyzer_express(T x);
  15
  16 // Invalid declarations to test basic correctness checks.
  17 void clang_analyzer_denote();
  18 void clang_analyzer_denote(int x);
  19 void clang_analyzer_express();
  20
  21 void foo(int x, unsigned y) {
  22   clang_analyzer_denote(); // expected-warning{{clang_analyzer_denote() requires a symbol and a string literal}}
  23   clang_analyzer_express(); // expected-warning{{Missing argument}}
  24
  25   clang_analyzer_denote(x); // expected-warning{{clang_analyzer_denote() requires a symbol and a string literal}}
  26   clang_analyzer_express(x); // expected-warning{{Unable to express}}
  27
  28   clang_analyzer_denote(x, "$x");
  29   clang_analyzer_express(-x); // expected-warning{{-$x}}
  30
  31   clang_analyzer_denote(y, "$y");
  32   clang_analyzer_express(x + y); // expected-warning{{$x + $y}}
  33
  34   clang_analyzer_denote(1, "$z");     // expected-warning{{Not a symbol}}
  35   clang_analyzer_express(1);     // expected-warning{{Not a symbol}}
  36
  37   clang_analyzer_denote(x + 1, "$w");
  38   clang_analyzer_express(x + 1); // expected-warning{{$w}}
  39   clang_analyzer_express(y + 1); // expected-warning{{$y + 1U}}
  40 }