reference, declarationdefinition
definition → references, declarations, derived classes, virtual overrides
reference to multiple definitions → definitions
unreferenced
    1
    2
    3
    4
    5
    6
    7
    8
    9
   10
   11
   12
   13
   14
   15
   16
   17
   18
   19
   20
   21
   22
   23
   24
   25
   26
   27
   28
   29
   30
   31
   32
   33
   34
   35
   36
   37
   38
   39
   40
   41
   42
   43
   44
   45
   46
   47
   48
   49
   50
// RUN: %clang_analyze_cc1 -std=c++14 -analyzer-checker=core,deadcode,debug.ExprInspection -verify %s

int clang_analyzer_eval(int);

void generalizedCapture() {
  int v = 7;
  auto lambda = [x=v]() {
    return x;
  };

  int result = lambda();
  clang_analyzer_eval(result == 7); // expected-warning {{TRUE}}
}

void sideEffectsInGeneralizedCapture() {
  int v = 7;
  auto lambda = [x=v++]() {
    return x;
  };
  clang_analyzer_eval(v == 8); // expected-warning {{TRUE}}

  int r1 = lambda();
  int r2 = lambda();
  clang_analyzer_eval(r1 == 7); // expected-warning {{TRUE}}
  clang_analyzer_eval(r2 == 7); // expected-warning {{TRUE}}
  clang_analyzer_eval(v == 8); // expected-warning {{TRUE}}
}

int addOne(int p) {
 return p + 1;
}

void inliningInGeneralizedCapture() {
  int v = 7;
  auto lambda = [x=addOne(v)]() {
    return x;
  };

  int result = lambda();
  clang_analyzer_eval(result == 8); // expected-warning {{TRUE}}
}

void caseSplitInGeneralizedCapture(bool p) {
  auto lambda = [x=(p ? 1 : 2)]() {
    return x;
  };

  int result = lambda();
  clang_analyzer_eval(result == 1); // expected-warning {{FALSE}} expected-warning {{TRUE}}
}