NewDelete-path-notes.cpp revision 3d11708c491a96198ebfee49079ae458ed90eaf8 
1// RUN: %clang_cc1 -analyze -analyzer-checker=alpha.cplusplus.NewDelete,unix.Malloc -analyzer-output=text -verify %s
2// RUN: %clang_cc1 -analyze -analyzer-checker=alpha.cplusplus.NewDelete,unix.Malloc -analyzer-output=plist %s -o %t.plist
3// RUN: FileCheck --input-file=%t.plist %s
4
5void test() {
6  int *p = new int;
7  // expected-note@-1 {{Memory is allocated}}
8  if (p)
9    // expected-note@-1 {{Assuming 'p' is non-null}}
10    // expected-note@-2 {{Taking true branch}}
11    delete p;
12    // expected-note@-1 {{Memory is released}}
13
14  delete p; // expected-warning {{Attempt to free released memory}}
15  // expected-note@-1 {{Attempt to free released memory}}
16}
17
18// CHECK:  <key>diagnostics</key>
19// CHECK-NEXT:<array>
20// CHECK-NEXT: <dict>
21// CHECK-NEXT:  <key>path</key>
22// CHECK-NEXT:  <array>
23// CHECK-NEXT:   <dict>
24// CHECK-NEXT:    <key>kind</key><string>control</string>
25// CHECK-NEXT:    <key>edges</key>
26// CHECK-NEXT:     <array>
27// CHECK-NEXT:      <dict>
28// CHECK-NEXT:       <key>start</key>
29// CHECK-NEXT:        <array>
30// CHECK-NEXT:         <dict>
31// CHECK-NEXT:          <key>line</key><integer>6</integer>
32// CHECK-NEXT:          <key>col</key><integer>3</integer>
33// CHECK-NEXT:          <key>file</key><integer>0</integer>
34// CHECK-NEXT:         </dict>
35// CHECK-NEXT:         <dict>
36// CHECK-NEXT:          <key>line</key><integer>6</integer>
37// CHECK-NEXT:          <key>col</key><integer>5</integer>
38// CHECK-NEXT:          <key>file</key><integer>0</integer>
39// CHECK-NEXT:         </dict>
40// CHECK-NEXT:        </array>
41// CHECK-NEXT:       <key>end</key>
42// CHECK-NEXT:        <array>
43// CHECK-NEXT:         <dict>
44// CHECK-NEXT:          <key>line</key><integer>6</integer>
45// CHECK-NEXT:          <key>col</key><integer>12</integer>
46// CHECK-NEXT:          <key>file</key><integer>0</integer>
47// CHECK-NEXT:         </dict>
48// CHECK-NEXT:         <dict>
49// CHECK-NEXT:          <key>line</key><integer>6</integer>
50// CHECK-NEXT:          <key>col</key><integer>14</integer>
51// CHECK-NEXT:          <key>file</key><integer>0</integer>
52// CHECK-NEXT:         </dict>
53// CHECK-NEXT:        </array>
54// CHECK-NEXT:      </dict>
55// CHECK-NEXT:     </array>
56// CHECK-NEXT:   </dict>
57// CHECK-NEXT:   <dict>
58// CHECK-NEXT:    <key>kind</key><string>event</string>
59// CHECK-NEXT:    <key>location</key>
60// CHECK-NEXT:    <dict>
61// CHECK-NEXT:     <key>line</key><integer>6</integer>
62// CHECK-NEXT:     <key>col</key><integer>12</integer>
63// CHECK-NEXT:     <key>file</key><integer>0</integer>
64// CHECK-NEXT:    </dict>
65// CHECK-NEXT:    <key>ranges</key>
66// CHECK-NEXT:    <array>
67// CHECK-NEXT:      <array>
68// CHECK-NEXT:       <dict>
69// CHECK-NEXT:        <key>line</key><integer>6</integer>
70// CHECK-NEXT:        <key>col</key><integer>12</integer>
71// CHECK-NEXT:        <key>file</key><integer>0</integer>
72// CHECK-NEXT:       </dict>
73// CHECK-NEXT:       <dict>
74// CHECK-NEXT:        <key>line</key><integer>6</integer>
75// CHECK-NEXT:        <key>col</key><integer>18</integer>
76// CHECK-NEXT:        <key>file</key><integer>0</integer>
77// CHECK-NEXT:       </dict>
78// CHECK-NEXT:      </array>
79// CHECK-NEXT:    </array>
80// CHECK-NEXT:    <key>depth</key><integer>0</integer>
81// CHECK-NEXT:    <key>extended_message</key>
82// CHECK-NEXT:    <string>Memory is allocated</string>
83// CHECK-NEXT:    <key>message</key>
84// CHECK-NEXT:    <string>Memory is allocated</string>
85// CHECK-NEXT:   </dict>
86// CHECK-NEXT:   <dict>
87// CHECK-NEXT:    <key>kind</key><string>control</string>
88// CHECK-NEXT:    <key>edges</key>
89// CHECK-NEXT:     <array>
90// CHECK-NEXT:      <dict>
91// CHECK-NEXT:       <key>start</key>
92// CHECK-NEXT:        <array>
93// CHECK-NEXT:         <dict>
94// CHECK-NEXT:          <key>line</key><integer>6</integer>
95// CHECK-NEXT:          <key>col</key><integer>12</integer>
96// CHECK-NEXT:          <key>file</key><integer>0</integer>
97// CHECK-NEXT:         </dict>
98// CHECK-NEXT:         <dict>
99// CHECK-NEXT:          <key>line</key><integer>6</integer>
100// CHECK-NEXT:          <key>col</key><integer>14</integer>
101// CHECK-NEXT:          <key>file</key><integer>0</integer>
102// CHECK-NEXT:         </dict>
103// CHECK-NEXT:        </array>
104// CHECK-NEXT:       <key>end</key>
105// CHECK-NEXT:        <array>
106// CHECK-NEXT:         <dict>
107// CHECK-NEXT:          <key>line</key><integer>8</integer>
108// CHECK-NEXT:          <key>col</key><integer>3</integer>
109// CHECK-NEXT:          <key>file</key><integer>0</integer>
110// CHECK-NEXT:         </dict>
111// CHECK-NEXT:         <dict>
112// CHECK-NEXT:          <key>line</key><integer>8</integer>
113// CHECK-NEXT:          <key>col</key><integer>4</integer>
114// CHECK-NEXT:          <key>file</key><integer>0</integer>
115// CHECK-NEXT:         </dict>
116// CHECK-NEXT:        </array>
117// CHECK-NEXT:      </dict>
118// CHECK-NEXT:     </array>
119// CHECK-NEXT:   </dict>
120// CHECK-NEXT:   <dict>
121// CHECK-NEXT:    <key>kind</key><string>control</string>
122// CHECK-NEXT:    <key>edges</key>
123// CHECK-NEXT:     <array>
124// CHECK-NEXT:      <dict>
125// CHECK-NEXT:       <key>start</key>
126// CHECK-NEXT:        <array>
127// CHECK-NEXT:         <dict>
128// CHECK-NEXT:          <key>line</key><integer>8</integer>
129// CHECK-NEXT:          <key>col</key><integer>3</integer>
130// CHECK-NEXT:          <key>file</key><integer>0</integer>
131// CHECK-NEXT:         </dict>
132// CHECK-NEXT:         <dict>
133// CHECK-NEXT:          <key>line</key><integer>8</integer>
134// CHECK-NEXT:          <key>col</key><integer>4</integer>
135// CHECK-NEXT:          <key>file</key><integer>0</integer>
136// CHECK-NEXT:         </dict>
137// CHECK-NEXT:        </array>
138// CHECK-NEXT:       <key>end</key>
139// CHECK-NEXT:        <array>
140// CHECK-NEXT:         <dict>
141// CHECK-NEXT:          <key>line</key><integer>8</integer>
142// CHECK-NEXT:          <key>col</key><integer>7</integer>
143// CHECK-NEXT:          <key>file</key><integer>0</integer>
144// CHECK-NEXT:         </dict>
145// CHECK-NEXT:         <dict>
146// CHECK-NEXT:          <key>line</key><integer>8</integer>
147// CHECK-NEXT:          <key>col</key><integer>7</integer>
148// CHECK-NEXT:          <key>file</key><integer>0</integer>
149// CHECK-NEXT:         </dict>
150// CHECK-NEXT:        </array>
151// CHECK-NEXT:      </dict>
152// CHECK-NEXT:     </array>
153// CHECK-NEXT:   </dict>
154// CHECK-NEXT:   <dict>
155// CHECK-NEXT:    <key>kind</key><string>event</string>
156// CHECK-NEXT:    <key>location</key>
157// CHECK-NEXT:    <dict>
158// CHECK-NEXT:     <key>line</key><integer>8</integer>
159// CHECK-NEXT:     <key>col</key><integer>7</integer>
160// CHECK-NEXT:     <key>file</key><integer>0</integer>
161// CHECK-NEXT:    </dict>
162// CHECK-NEXT:    <key>ranges</key>
163// CHECK-NEXT:    <array>
164// CHECK-NEXT:      <array>
165// CHECK-NEXT:       <dict>
166// CHECK-NEXT:        <key>line</key><integer>8</integer>
167// CHECK-NEXT:        <key>col</key><integer>7</integer>
168// CHECK-NEXT:        <key>file</key><integer>0</integer>
169// CHECK-NEXT:       </dict>
170// CHECK-NEXT:       <dict>
171// CHECK-NEXT:        <key>line</key><integer>8</integer>
172// CHECK-NEXT:        <key>col</key><integer>7</integer>
173// CHECK-NEXT:        <key>file</key><integer>0</integer>
174// CHECK-NEXT:       </dict>
175// CHECK-NEXT:      </array>
176// CHECK-NEXT:    </array>
177// CHECK-NEXT:    <key>depth</key><integer>0</integer>
178// CHECK-NEXT:    <key>extended_message</key>
179// CHECK-NEXT:    <string>Assuming &apos;p&apos; is non-null</string>
180// CHECK-NEXT:    <key>message</key>
181// CHECK-NEXT:    <string>Assuming &apos;p&apos; is non-null</string>
182// CHECK-NEXT:   </dict>
183// CHECK-NEXT:   <dict>
184// CHECK-NEXT:    <key>kind</key><string>control</string>
185// CHECK-NEXT:    <key>edges</key>
186// CHECK-NEXT:     <array>
187// CHECK-NEXT:      <dict>
188// CHECK-NEXT:       <key>start</key>
189// CHECK-NEXT:        <array>
190// CHECK-NEXT:         <dict>
191// CHECK-NEXT:          <key>line</key><integer>8</integer>
192// CHECK-NEXT:          <key>col</key><integer>7</integer>
193// CHECK-NEXT:          <key>file</key><integer>0</integer>
194// CHECK-NEXT:         </dict>
195// CHECK-NEXT:         <dict>
196// CHECK-NEXT:          <key>line</key><integer>8</integer>
197// CHECK-NEXT:          <key>col</key><integer>7</integer>
198// CHECK-NEXT:          <key>file</key><integer>0</integer>
199// CHECK-NEXT:         </dict>
200// CHECK-NEXT:        </array>
201// CHECK-NEXT:       <key>end</key>
202// CHECK-NEXT:        <array>
203// CHECK-NEXT:         <dict>
204// CHECK-NEXT:          <key>line</key><integer>11</integer>
205// CHECK-NEXT:          <key>col</key><integer>5</integer>
206// CHECK-NEXT:          <key>file</key><integer>0</integer>
207// CHECK-NEXT:         </dict>
208// CHECK-NEXT:         <dict>
209// CHECK-NEXT:          <key>line</key><integer>11</integer>
210// CHECK-NEXT:          <key>col</key><integer>10</integer>
211// CHECK-NEXT:          <key>file</key><integer>0</integer>
212// CHECK-NEXT:         </dict>
213// CHECK-NEXT:        </array>
214// CHECK-NEXT:      </dict>
215// CHECK-NEXT:     </array>
216// CHECK-NEXT:   </dict>
217// CHECK-NEXT:   <dict>
218// CHECK-NEXT:    <key>kind</key><string>event</string>
219// CHECK-NEXT:    <key>location</key>
220// CHECK-NEXT:    <dict>
221// CHECK-NEXT:     <key>line</key><integer>11</integer>
222// CHECK-NEXT:     <key>col</key><integer>5</integer>
223// CHECK-NEXT:     <key>file</key><integer>0</integer>
224// CHECK-NEXT:    </dict>
225// CHECK-NEXT:    <key>ranges</key>
226// CHECK-NEXT:    <array>
227// CHECK-NEXT:      <array>
228// CHECK-NEXT:       <dict>
229// CHECK-NEXT:        <key>line</key><integer>11</integer>
230// CHECK-NEXT:        <key>col</key><integer>5</integer>
231// CHECK-NEXT:        <key>file</key><integer>0</integer>
232// CHECK-NEXT:       </dict>
233// CHECK-NEXT:       <dict>
234// CHECK-NEXT:        <key>line</key><integer>11</integer>
235// CHECK-NEXT:        <key>col</key><integer>12</integer>
236// CHECK-NEXT:        <key>file</key><integer>0</integer>
237// CHECK-NEXT:       </dict>
238// CHECK-NEXT:      </array>
239// CHECK-NEXT:    </array>
240// CHECK-NEXT:    <key>depth</key><integer>0</integer>
241// CHECK-NEXT:    <key>extended_message</key>
242// CHECK-NEXT:    <string>Memory is released</string>
243// CHECK-NEXT:    <key>message</key>
244// CHECK-NEXT:    <string>Memory is released</string>
245// CHECK-NEXT:   </dict>
246// CHECK-NEXT:   <dict>
247// CHECK-NEXT:    <key>kind</key><string>control</string>
248// CHECK-NEXT:    <key>edges</key>
249// CHECK-NEXT:     <array>
250// CHECK-NEXT:      <dict>
251// CHECK-NEXT:       <key>start</key>
252// CHECK-NEXT:        <array>
253// CHECK-NEXT:         <dict>
254// CHECK-NEXT:          <key>line</key><integer>11</integer>
255// CHECK-NEXT:          <key>col</key><integer>5</integer>
256// CHECK-NEXT:          <key>file</key><integer>0</integer>
257// CHECK-NEXT:         </dict>
258// CHECK-NEXT:         <dict>
259// CHECK-NEXT:          <key>line</key><integer>11</integer>
260// CHECK-NEXT:          <key>col</key><integer>10</integer>
261// CHECK-NEXT:          <key>file</key><integer>0</integer>
262// CHECK-NEXT:         </dict>
263// CHECK-NEXT:        </array>
264// CHECK-NEXT:       <key>end</key>
265// CHECK-NEXT:        <array>
266// CHECK-NEXT:         <dict>
267// CHECK-NEXT:          <key>line</key><integer>14</integer>
268// CHECK-NEXT:          <key>col</key><integer>3</integer>
269// CHECK-NEXT:          <key>file</key><integer>0</integer>
270// CHECK-NEXT:         </dict>
271// CHECK-NEXT:         <dict>
272// CHECK-NEXT:          <key>line</key><integer>14</integer>
273// CHECK-NEXT:          <key>col</key><integer>8</integer>
274// CHECK-NEXT:          <key>file</key><integer>0</integer>
275// CHECK-NEXT:         </dict>
276// CHECK-NEXT:        </array>
277// CHECK-NEXT:      </dict>
278// CHECK-NEXT:     </array>
279// CHECK-NEXT:   </dict>
280// CHECK-NEXT:   <dict>
281// CHECK-NEXT:    <key>kind</key><string>event</string>
282// CHECK-NEXT:    <key>location</key>
283// CHECK-NEXT:    <dict>
284// CHECK-NEXT:     <key>line</key><integer>14</integer>
285// CHECK-NEXT:     <key>col</key><integer>3</integer>
286// CHECK-NEXT:     <key>file</key><integer>0</integer>
287// CHECK-NEXT:    </dict>
288// CHECK-NEXT:    <key>ranges</key>
289// CHECK-NEXT:    <array>
290// CHECK-NEXT:      <array>
291// CHECK-NEXT:       <dict>
292// CHECK-NEXT:        <key>line</key><integer>14</integer>
293// CHECK-NEXT:        <key>col</key><integer>3</integer>
294// CHECK-NEXT:        <key>file</key><integer>0</integer>
295// CHECK-NEXT:       </dict>
296// CHECK-NEXT:       <dict>
297// CHECK-NEXT:        <key>line</key><integer>14</integer>
298// CHECK-NEXT:        <key>col</key><integer>10</integer>
299// CHECK-NEXT:        <key>file</key><integer>0</integer>
300// CHECK-NEXT:       </dict>
301// CHECK-NEXT:      </array>
302// CHECK-NEXT:    </array>
303// CHECK-NEXT:    <key>depth</key><integer>0</integer>
304// CHECK-NEXT:    <key>extended_message</key>
305// CHECK-NEXT:    <string>Attempt to free released memory</string>
306// CHECK-NEXT:    <key>message</key>
307// CHECK-NEXT:    <string>Attempt to free released memory</string>
308// CHECK-NEXT:   </dict>
309// CHECK-NEXT:  </array>
310// CHECK-NEXT:  <key>description</key><string>Attempt to free released memory</string>
311// CHECK-NEXT:  <key>category</key><string>Memory Error</string>
312// CHECK-NEXT:  <key>type</key><string>Double free</string>
313// CHECK-NEXT: <key>issue_context_kind</key><string>function</string>
314// CHECK-NEXT: <key>issue_context</key><string>test</string>
315// CHECK-NEXT: <key>issue_hash</key><string>9</string>
316// CHECK-NEXT: <key>location</key>
317// CHECK-NEXT: <dict>
318// CHECK-NEXT:  <key>line</key><integer>14</integer>
319// CHECK-NEXT:  <key>col</key><integer>3</integer>
320// CHECK-NEXT:  <key>file</key><integer>0</integer>
321// CHECK-NEXT: </dict>
322// CHECK-NEXT: </dict>
323// CHECK-NEXT:</array>
324