Jelly Bean MR1  |  4.2.2_r1
C++程序  |  452行  |  17.04 KB 

// RUN: %clang_cc1 -analyze -analyzer-checker=core -analyzer-output=text -verify %s
// RUN: %clang_cc1 -analyze -analyzer-checker=core -analyzer-output=plist-multi-file %s -o - | FileCheck %s

void foo_irrelevant(int c) {
    if (c)
        return;
    c++;
    return;
}
void foo(int c, int *x) {
    if (c)
           //expected-note@-1{{Assuming 'c' is not equal to 0}}
           //expected-note@-2{{Taking true branch}}
        return;
    *x = 5;
}

int use(int c) {
    int xx; //expected-note{{Variable 'xx' declared without an initial value}}
    int *y = &xx;
    foo (c, y);
                //expected-note@-1{{Calling 'foo'}}
                //expected-note@-2{{Returning from 'foo'}}
    foo_irrelevant(c);
    return xx+3; //expected-warning{{The left operand of '+' is a garbage value}}
                 //expected-note@-1{{The left operand of '+' is a garbage value}}
}

//CHECK:  <dict>
//CHECK:   <key>files</key>
//CHECK:   <array>
//CHECK:   </array>
//CHECK:   <key>diagnostics</key>
//CHECK:   <array>
//CHECK:    <dict>
//CHECK:     <key>path</key>
//CHECK:     <array>
//CHECK:      <dict>
//CHECK:       <key>kind</key><string>event</string>
//CHECK:       <key>location</key>
//CHECK:       <dict>
//CHECK:        <key>line</key><integer>19</integer>
//CHECK:        <key>col</key><integer>5</integer>
//CHECK:        <key>file</key><integer>0</integer>
//CHECK:       </dict>
//CHECK:       <key>ranges</key>
//CHECK:       <array>
//CHECK:         <array>
//CHECK:          <dict>
//CHECK:           <key>line</key><integer>19</integer>
//CHECK:           <key>col</key><integer>5</integer>
//CHECK:           <key>file</key><integer>0</integer>
//CHECK:          </dict>
//CHECK:          <dict>
//CHECK:           <key>line</key><integer>19</integer>
//CHECK:           <key>col</key><integer>10</integer>
//CHECK:           <key>file</key><integer>0</integer>
//CHECK:          </dict>
//CHECK:         </array>
//CHECK:       </array>
//CHECK:       <key>depth</key><integer>0</integer>
//CHECK:       <key>extended_message</key>
//CHECK:       <string>Variable &apos;xx&apos; declared without an initial value</string>
//CHECK:       <key>message</key>
//CHECK:  <string>Variable &apos;xx&apos; declared without an initial value</string>
//CHECK:      </dict>
//CHECK:      <dict>
//CHECK:       <key>kind</key><string>control</string>
//CHECK:       <key>edges</key>
//CHECK:        <array>
//CHECK:         <dict>
//CHECK:          <key>start</key>
//CHECK:           <array>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>19</integer>
//CHECK:             <key>col</key><integer>5</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>19</integer>
//CHECK:             <key>col</key><integer>7</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:           </array>
//CHECK:          <key>end</key>
//CHECK:           <array>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>21</integer>
//CHECK:             <key>col</key><integer>5</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>21</integer>
//CHECK:             <key>col</key><integer>7</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:           </array>
//CHECK:         </dict>
//CHECK:        </array>
//CHECK:      </dict>
//CHECK:      <dict>
//CHECK:       <key>kind</key><string>event</string>
//CHECK:       <key>location</key>
//CHECK:       <dict>
//CHECK:        <key>line</key><integer>21</integer>
//CHECK:        <key>col</key><integer>5</integer>
//CHECK:        <key>file</key><integer>0</integer>
//CHECK:       </dict>
//CHECK:       <key>ranges</key>
//CHECK:       <array>
//CHECK:         <array>
//CHECK:          <dict>
//CHECK:           <key>line</key><integer>21</integer>
//CHECK:           <key>col</key><integer>5</integer>
//CHECK:           <key>file</key><integer>0</integer>
//CHECK:          </dict>
//CHECK:          <dict>
//CHECK:           <key>line</key><integer>21</integer>
//CHECK:           <key>col</key><integer>14</integer>
//CHECK:           <key>file</key><integer>0</integer>
//CHECK:          </dict>
//CHECK:         </array>
//CHECK:       </array>
//CHECK:       <key>depth</key><integer>0</integer>
//CHECK:       <key>extended_message</key>
//CHECK:       <string>Calling &apos;foo&apos;</string>
//CHECK:       <key>message</key>
//CHECK:  <string>Calling &apos;foo&apos;</string>
//CHECK:      </dict>
//CHECK:      <dict>
//CHECK:       <key>kind</key><string>event</string>
//CHECK:       <key>location</key>
//CHECK:       <dict>
//CHECK:        <key>line</key><integer>10</integer>
//CHECK:        <key>col</key><integer>1</integer>
//CHECK:        <key>file</key><integer>0</integer>
//CHECK:       </dict>
//CHECK:       <key>depth</key><integer>1</integer>
//CHECK:       <key>extended_message</key>
//CHECK:       <string>Entered call from &apos;use&apos;</string>
//CHECK:       <key>message</key>
//CHECK:  <string>Entered call from &apos;use&apos;</string>
//CHECK:      </dict>
//CHECK:      <dict>
//CHECK:       <key>kind</key><string>control</string>
//CHECK:       <key>edges</key>
//CHECK:        <array>
//CHECK:         <dict>
//CHECK:          <key>start</key>
//CHECK:           <array>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>10</integer>
//CHECK:             <key>col</key><integer>1</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>10</integer>
//CHECK:             <key>col</key><integer>4</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:           </array>
//CHECK:          <key>end</key>
//CHECK:           <array>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>11</integer>
//CHECK:             <key>col</key><integer>5</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>11</integer>
//CHECK:             <key>col</key><integer>6</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:           </array>
//CHECK:         </dict>
//CHECK:        </array>
//CHECK:      </dict>
//CHECK:      <dict>
//CHECK:       <key>kind</key><string>control</string>
//CHECK:       <key>edges</key>
//CHECK:        <array>
//CHECK:         <dict>
//CHECK:          <key>start</key>
//CHECK:           <array>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>11</integer>
//CHECK:             <key>col</key><integer>5</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>11</integer>
//CHECK:             <key>col</key><integer>6</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:           </array>
//CHECK:          <key>end</key>
//CHECK:           <array>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>11</integer>
//CHECK:             <key>col</key><integer>9</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>11</integer>
//CHECK:             <key>col</key><integer>9</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:           </array>
//CHECK:         </dict>
//CHECK:        </array>
//CHECK:      </dict>
//CHECK:      <dict>
//CHECK:       <key>kind</key><string>event</string>
//CHECK:       <key>location</key>
//CHECK:       <dict>
//CHECK:        <key>line</key><integer>11</integer>
//CHECK:        <key>col</key><integer>9</integer>
//CHECK:        <key>file</key><integer>0</integer>
//CHECK:       </dict>
//CHECK:       <key>ranges</key>
//CHECK:       <array>
//CHECK:         <array>
//CHECK:          <dict>
//CHECK:           <key>line</key><integer>11</integer>
//CHECK:           <key>col</key><integer>9</integer>
//CHECK:           <key>file</key><integer>0</integer>
//CHECK:          </dict>
//CHECK:          <dict>
//CHECK:           <key>line</key><integer>11</integer>
//CHECK:           <key>col</key><integer>9</integer>
//CHECK:           <key>file</key><integer>0</integer>
//CHECK:          </dict>
//CHECK:         </array>
//CHECK:       </array>
//CHECK:       <key>depth</key><integer>1</integer>
//CHECK:       <key>extended_message</key>
//CHECK:       <string>Assuming &apos;c&apos; is not equal to 0</string>
//CHECK:       <key>message</key>
//CHECK:  <string>Assuming &apos;c&apos; is not equal to 0</string>
//CHECK:      </dict>
//CHECK:      <dict>
//CHECK:       <key>kind</key><string>control</string>
//CHECK:       <key>edges</key>
//CHECK:        <array>
//CHECK:         <dict>
//CHECK:          <key>start</key>
//CHECK:           <array>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>11</integer>
//CHECK:             <key>col</key><integer>9</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>11</integer>
//CHECK:             <key>col</key><integer>9</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:           </array>
//CHECK:          <key>end</key>
//CHECK:           <array>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>14</integer>
//CHECK:             <key>col</key><integer>9</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>14</integer>
//CHECK:             <key>col</key><integer>14</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:           </array>
//CHECK:         </dict>
//CHECK:        </array>
//CHECK:      </dict>
//CHECK:      <dict>
//CHECK:       <key>kind</key><string>event</string>
//CHECK:       <key>location</key>
//CHECK:       <dict>
//CHECK:        <key>line</key><integer>21</integer>
//CHECK:        <key>col</key><integer>5</integer>
//CHECK:        <key>file</key><integer>0</integer>
//CHECK:       </dict>
//CHECK:       <key>ranges</key>
//CHECK:       <array>
//CHECK:         <array>
//CHECK:          <dict>
//CHECK:           <key>line</key><integer>21</integer>
//CHECK:           <key>col</key><integer>5</integer>
//CHECK:           <key>file</key><integer>0</integer>
//CHECK:          </dict>
//CHECK:          <dict>
//CHECK:           <key>line</key><integer>21</integer>
//CHECK:           <key>col</key><integer>14</integer>
//CHECK:           <key>file</key><integer>0</integer>
//CHECK:          </dict>
//CHECK:         </array>
//CHECK:       </array>
//CHECK:       <key>depth</key><integer>1</integer>
//CHECK:       <key>extended_message</key>
//CHECK:       <string>Returning from &apos;foo&apos;</string>
//CHECK:       <key>message</key>
//CHECK:  <string>Returning from &apos;foo&apos;</string>
//CHECK:      </dict>
//CHECK:      <dict>
//CHECK:       <key>kind</key><string>control</string>
//CHECK:       <key>edges</key>
//CHECK:        <array>
//CHECK:         <dict>
//CHECK:          <key>start</key>
//CHECK:           <array>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>21</integer>
//CHECK:             <key>col</key><integer>5</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>21</integer>
//CHECK:             <key>col</key><integer>7</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:           </array>
//CHECK:          <key>end</key>
//CHECK:           <array>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>24</integer>
//CHECK:             <key>col</key><integer>5</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>24</integer>
//CHECK:             <key>col</key><integer>18</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:           </array>
//CHECK:         </dict>
//CHECK:        </array>
//CHECK:      </dict>
//CHECK:      <dict>
//CHECK:       <key>kind</key><string>control</string>
//CHECK:       <key>edges</key>
//CHECK:        <array>
//CHECK:         <dict>
//CHECK:          <key>start</key>
//CHECK:           <array>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>24</integer>
//CHECK:             <key>col</key><integer>5</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>24</integer>
//CHECK:             <key>col</key><integer>18</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:           </array>
//CHECK:          <key>end</key>
//CHECK:           <array>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>25</integer>
//CHECK:             <key>col</key><integer>5</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>25</integer>
//CHECK:             <key>col</key><integer>10</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:           </array>
//CHECK:         </dict>
//CHECK:        </array>
//CHECK:      </dict>
//CHECK:      <dict>
//CHECK:       <key>kind</key><string>control</string>
//CHECK:       <key>edges</key>
//CHECK:        <array>
//CHECK:         <dict>
//CHECK:          <key>start</key>
//CHECK:           <array>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>25</integer>
//CHECK:             <key>col</key><integer>5</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>25</integer>
//CHECK:             <key>col</key><integer>10</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:           </array>
//CHECK:          <key>end</key>
//CHECK:           <array>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>25</integer>
//CHECK:             <key>col</key><integer>12</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:            <dict>
//CHECK:             <key>line</key><integer>25</integer>
//CHECK:             <key>col</key><integer>13</integer>
//CHECK:             <key>file</key><integer>0</integer>
//CHECK:            </dict>
//CHECK:           </array>
//CHECK:         </dict>
//CHECK:        </array>
//CHECK:      </dict>
//CHECK:      <dict>
//CHECK:       <key>kind</key><string>event</string>
//CHECK:       <key>location</key>
//CHECK:       <dict>
//CHECK:        <key>line</key><integer>25</integer>
//CHECK:        <key>col</key><integer>12</integer>
//CHECK:        <key>file</key><integer>0</integer>
//CHECK:       </dict>
//CHECK:       <key>ranges</key>
//CHECK:       <array>
//CHECK:         <array>
//CHECK:          <dict>
//CHECK:           <key>line</key><integer>25</integer>
//CHECK:           <key>col</key><integer>12</integer>
//CHECK:           <key>file</key><integer>0</integer>
//CHECK:          </dict>
//CHECK:          <dict>
//CHECK:           <key>line</key><integer>25</integer>
//CHECK:           <key>col</key><integer>13</integer>
//CHECK:           <key>file</key><integer>0</integer>
//CHECK:          </dict>
//CHECK:         </array>
//CHECK:       </array>
//CHECK:       <key>depth</key><integer>0</integer>
//CHECK:       <key>extended_message</key>
//CHECK:       <string>The left operand of &apos;+&apos; is a garbage value</string>
//CHECK:       <key>message</key>
//CHECK:  <string>The left operand of &apos;+&apos; is a garbage value</string>
//CHECK:      </dict>
//CHECK:     </array>
//CHECK:     <key>description</key><string>The left operand of &apos;+&apos; is a garbage value</string>
//CHECK:     <key>category</key><string>Logic error</string>
//CHECK:     <key>type</key><string>Result of operation is garbage or undefined</string>
//CHECK:    <key>issue_context_kind</key><string>function</string>
//CHECK:    <key>issue_context</key><string>use</string>
//CHECK:    <key>issue_hash</key><integer>7</integer>
//CHECK:    <key>location</key>
//CHECK:    <dict>
//CHECK:     <key>line</key><integer>25</integer>
//CHECK:     <key>col</key><integer>12</integer>
//CHECK:     <key>file</key><integer>0</integer>
//CHECK:    </dict>
//CHECK:    </dict>
//CHECK:   </array>
//CHECK:  </dict>
//CHECK:  </plist>