f4a2713ac8
Change-Id: Ia40e9ffdf29b5dab2f122f673ff6802a58bc690f
385 lines
17 KiB
C++
385 lines
17 KiB
C++
// RUN: %clang_cc1 -analyze -analyzer-checker=core -analyzer-output=text -analyzer-config graph-trim-interval=5 -analyzer-config suppress-null-return-paths=false -verify %s
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// RUN: %clang_cc1 -analyze -analyzer-checker=core -analyzer-output=plist-multi-file -analyzer-config graph-trim-interval=5 -analyzer-config suppress-null-return-paths=false -analyzer-config path-diagnostics-alternate=false %s -o %t.plist
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// RUN: FileCheck --input-file=%t.plist %s
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typedef struct {
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int getValue();
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} IntWrapper;
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IntWrapper *getNullWrapper() {
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return 0;
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// expected-note@-1 {{Returning null pointer}}
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}
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int memberCallBaseDisappears() {
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// In this case, we need the lvalue-to-rvalue cast for 'ptr' to disappear,
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// which means we need to trigger reclamation between that and the ->
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// operator.
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//
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// Note that this test is EXTREMELY brittle because it's a negative test:
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// we want to show that even if the node for the rvalue of 'ptr' disappears,
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// we get the same results as if it doesn't. The test should never fail even
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// if our node reclamation policy changes, but it could easily not be testing
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// anything at that point.
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IntWrapper *ptr = getNullWrapper();
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// expected-note@-1 {{Calling 'getNullWrapper'}}
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// expected-note@-2 {{Returning from 'getNullWrapper'}}
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// expected-note@-3 {{'ptr' initialized to a null pointer value}}
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// Burn some nodes to trigger reclamation.
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int unused = 1;
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(void)unused;
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return ptr->getValue(); // expected-warning {{Called C++ object pointer is null}}
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// expected-note@-1 {{Called C++ object pointer is null}}
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}
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// CHECK: <key>diagnostics</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>path</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>kind</key><string>control</string>
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// CHECK-NEXT: <key>edges</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>start</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>24</integer>
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// CHECK-NEXT: <key>col</key><integer>3</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>24</integer>
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// CHECK-NEXT: <key>col</key><integer>12</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: <key>end</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>24</integer>
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// CHECK-NEXT: <key>col</key><integer>21</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>24</integer>
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// CHECK-NEXT: <key>col</key><integer>34</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>kind</key><string>event</string>
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// CHECK-NEXT: <key>location</key>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>24</integer>
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// CHECK-NEXT: <key>col</key><integer>21</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <key>ranges</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>24</integer>
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// CHECK-NEXT: <key>col</key><integer>21</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>24</integer>
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// CHECK-NEXT: <key>col</key><integer>36</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: <key>depth</key><integer>0</integer>
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// CHECK-NEXT: <key>extended_message</key>
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// CHECK-NEXT: <string>Calling 'getNullWrapper'</string>
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// CHECK-NEXT: <key>message</key>
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// CHECK-NEXT: <string>Calling 'getNullWrapper'</string>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>kind</key><string>event</string>
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// CHECK-NEXT: <key>location</key>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>9</integer>
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// CHECK-NEXT: <key>col</key><integer>1</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <key>depth</key><integer>1</integer>
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// CHECK-NEXT: <key>extended_message</key>
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// CHECK-NEXT: <string>Entered call from 'memberCallBaseDisappears'</string>
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// CHECK-NEXT: <key>message</key>
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// CHECK-NEXT: <string>Entered call from 'memberCallBaseDisappears'</string>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>kind</key><string>control</string>
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// CHECK-NEXT: <key>edges</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>start</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>9</integer>
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// CHECK-NEXT: <key>col</key><integer>1</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>9</integer>
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// CHECK-NEXT: <key>col</key><integer>10</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: <key>end</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>10</integer>
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// CHECK-NEXT: <key>col</key><integer>3</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>10</integer>
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// CHECK-NEXT: <key>col</key><integer>8</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>kind</key><string>event</string>
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// CHECK-NEXT: <key>location</key>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>10</integer>
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// CHECK-NEXT: <key>col</key><integer>3</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <key>ranges</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>10</integer>
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// CHECK-NEXT: <key>col</key><integer>3</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>10</integer>
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// CHECK-NEXT: <key>col</key><integer>10</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: <key>depth</key><integer>1</integer>
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// CHECK-NEXT: <key>extended_message</key>
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// CHECK-NEXT: <string>Returning null pointer</string>
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// CHECK-NEXT: <key>message</key>
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// CHECK-NEXT: <string>Returning null pointer</string>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>kind</key><string>event</string>
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// CHECK-NEXT: <key>location</key>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>24</integer>
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// CHECK-NEXT: <key>col</key><integer>21</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <key>ranges</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>24</integer>
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// CHECK-NEXT: <key>col</key><integer>21</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>24</integer>
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// CHECK-NEXT: <key>col</key><integer>36</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: <key>depth</key><integer>0</integer>
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// CHECK-NEXT: <key>extended_message</key>
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// CHECK-NEXT: <string>Returning from 'getNullWrapper'</string>
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// CHECK-NEXT: <key>message</key>
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// CHECK-NEXT: <string>Returning from 'getNullWrapper'</string>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>kind</key><string>control</string>
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// CHECK-NEXT: <key>edges</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>start</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>24</integer>
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// CHECK-NEXT: <key>col</key><integer>21</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>24</integer>
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// CHECK-NEXT: <key>col</key><integer>34</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: <key>end</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>24</integer>
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// CHECK-NEXT: <key>col</key><integer>3</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>24</integer>
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// CHECK-NEXT: <key>col</key><integer>12</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>kind</key><string>event</string>
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// CHECK-NEXT: <key>location</key>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>24</integer>
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// CHECK-NEXT: <key>col</key><integer>3</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <key>ranges</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>24</integer>
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// CHECK-NEXT: <key>col</key><integer>3</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>24</integer>
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// CHECK-NEXT: <key>col</key><integer>17</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: <key>depth</key><integer>0</integer>
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// CHECK-NEXT: <key>extended_message</key>
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// CHECK-NEXT: <string>'ptr' initialized to a null pointer value</string>
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// CHECK-NEXT: <key>message</key>
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// CHECK-NEXT: <string>'ptr' initialized to a null pointer value</string>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>kind</key><string>control</string>
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// CHECK-NEXT: <key>edges</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>start</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>24</integer>
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// CHECK-NEXT: <key>col</key><integer>3</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>24</integer>
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// CHECK-NEXT: <key>col</key><integer>12</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: <key>end</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>33</integer>
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// CHECK-NEXT: <key>col</key><integer>3</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>33</integer>
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// CHECK-NEXT: <key>col</key><integer>8</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>kind</key><string>control</string>
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// CHECK-NEXT: <key>edges</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>start</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>33</integer>
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// CHECK-NEXT: <key>col</key><integer>3</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>33</integer>
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// CHECK-NEXT: <key>col</key><integer>8</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: <key>end</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>33</integer>
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// CHECK-NEXT: <key>col</key><integer>10</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>33</integer>
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// CHECK-NEXT: <key>col</key><integer>12</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>kind</key><string>event</string>
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// CHECK-NEXT: <key>location</key>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>33</integer>
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// CHECK-NEXT: <key>col</key><integer>10</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <key>ranges</key>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <array>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>33</integer>
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// CHECK-NEXT: <key>col</key><integer>10</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>33</integer>
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// CHECK-NEXT: <key>col</key><integer>12</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: <key>depth</key><integer>0</integer>
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// CHECK-NEXT: <key>extended_message</key>
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// CHECK-NEXT: <string>Called C++ object pointer is null</string>
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// CHECK-NEXT: <key>message</key>
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// CHECK-NEXT: <string>Called C++ object pointer is null</string>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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// CHECK-NEXT: <key>description</key><string>Called C++ object pointer is null</string>
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// CHECK-NEXT: <key>category</key><string>Logic error</string>
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// CHECK-NEXT: <key>type</key><string>Called C++ object pointer is null</string>
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// CHECK-NEXT: <key>issue_context_kind</key><string>function</string>
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// CHECK-NEXT: <key>issue_context</key><string>memberCallBaseDisappears</string>
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// CHECK-NEXT: <key>issue_hash</key><string>19</string>
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// CHECK-NEXT: <key>location</key>
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// CHECK-NEXT: <dict>
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// CHECK-NEXT: <key>line</key><integer>33</integer>
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// CHECK-NEXT: <key>col</key><integer>10</integer>
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// CHECK-NEXT: <key>file</key><integer>0</integer>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </dict>
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// CHECK-NEXT: </array>
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