| 1 | // RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-output=text -verify %s |
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| 2 | // RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-output=plist-multi-file %s -o %t.plist |
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| 3 | // RUN: cat %t.plist | %diff_plist %S/Inputs/expected-plists/deref-track-symbolic-region.c.plist - |
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| 4 | |
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| 5 | struct S { |
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| 6 | int *x; |
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| 7 | int y; |
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| 8 | }; |
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| 9 | |
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| 10 | int *foo(); |
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| 11 | |
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| 12 | void test(struct S syz, int *pp) { |
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| 13 | int m = 0; |
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| 14 | syz.x = foo(); // expected-note{{Value assigned to 'syz.x'}} |
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| 15 | |
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| 16 | struct S *ps = &syz; |
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| 17 | if (ps->x) |
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| 18 | //expected-note@-1{{Taking false branch}} |
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| 19 | //expected-note@-2{{Assuming pointer value is null}} |
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| 20 | |
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| 21 | m++; |
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| 22 | |
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| 23 | m += *syz.x; // expected-warning{{Dereference of null pointer (loaded from field 'x')}} |
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| 24 | // expected-note@-1{{Dereference of null pointer (loaded from field 'x')}} |
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| 25 | } |
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| 26 | |
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| 27 | void testTrackConstraintBRVisitorIsTrackingTurnedOn(struct S syz, int *pp) { |
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| 28 | int m = 0; |
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| 29 | syz.x = foo(); // expected-note{{Value assigned to 'syz.x'}} |
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| 30 | |
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| 31 | struct S *ps = &syz; |
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| 32 | if (ps->x) |
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| 33 | //expected-note@-1{{Taking false branch}} |
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| 34 | //expected-note@-2{{Assuming pointer value is null}} |
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| 35 | |
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| 36 | m++; |
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| 37 | int *p = syz.x; //expected-note {{'p' initialized to a null pointer value}} |
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| 38 | m = *p; // expected-warning {{Dereference of null pointer (loaded from variable 'p')}} |
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| 39 | // expected-note@-1 {{Dereference of null pointer (loaded from variable 'p')}} |
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| 40 | } |
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| 41 | |
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| 42 | |
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