| // RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-output=text -analyzer-config graph-trim-interval=5 -verify %s |
| // RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-output=plist-multi-file -analyzer-config graph-trim-interval=5 %s -o %t.plist |
| // RUN: %normalize_plist <%t.plist | diff -ub %S/Inputs/expected-plists/eager-reclamation-path-notes.c.plist - |
| |
| void use(int *ptr, int val) { |
| *ptr = val; // expected-warning {{Dereference of null pointer (loaded from variable 'ptr')}} |
| // expected-note@-1 {{Dereference of null pointer (loaded from variable 'ptr')}} |
| } |
| |
| int compute() { |
| // Do something that will take enough processing to trigger trimming. |
| // FIXME: This is actually really sensitive. If the interval timing is just |
| // wrong, the node for the actual dereference may also be collected, and all |
| // the path notes will disappear. <rdar://problem/12511814> |
| return 2 + 3 + 4 + 5 + 6; |
| } |
| |
| void testSimple() { |
| int *p = 0; |
| // expected-note@-1 {{'p' initialized to a null pointer value}} |
| use(p, compute()); |
| // expected-note@-1 {{Passing null pointer value via 1st parameter 'ptr'}} |
| // expected-note@-2 {{Calling 'use'}} |
| } |
| |
| |
| void use2(int *ptr, int val) { |
| *ptr = val; // expected-warning {{Dereference of null pointer (loaded from variable 'ptr')}} |
| // expected-note@-1 {{Dereference of null pointer (loaded from variable 'ptr')}} |
| } |
| |
| void passThrough(int *p) { |
| use2(p, compute()); |
| // expected-note@-1 {{Passing null pointer value via 1st parameter 'ptr'}} |
| // expected-note@-2 {{Calling 'use2'}} |
| } |
| |
| void testChainedCalls() { |
| int *ptr = 0; |
| // expected-note@-1 {{'ptr' initialized to a null pointer value}} |
| passThrough(ptr); |
| // expected-note@-1 {{Passing null pointer value via 1st parameter 'p'}} |
| // expected-note@-2 {{Calling 'passThrough'}} |
| } |
| |