derek.holloway
7502bf64a4
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42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
// RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-output=text -verify %s
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// RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-output=plist-multi-file %s -o %t.plist
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// RUN: %normalize_plist <%t.plist | diff -ub %S/Inputs/expected-plists/deref-track-symbolic-region.c.plist -
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struct S {
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int *x;
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int y;
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};
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int *foo(void);
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void test(struct S syz, int *pp) {
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int m = 0;
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syz.x = foo(); // expected-note{{Value assigned to 'syz.x'}}
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struct S *ps = &syz;
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if (ps->x)
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//expected-note@-1{{Assuming field 'x' is null}}
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//expected-note@-2{{Taking false branch}}
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m++;
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m += *syz.x; // expected-warning{{Dereference of null pointer (loaded from field 'x')}}
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// expected-note@-1{{Dereference of null pointer (loaded from field 'x')}}
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}
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void testTrackConstraintBRVisitorIsTrackingTurnedOn(struct S syz, int *pp) {
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int m = 0;
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syz.x = foo(); // expected-note{{Value assigned to 'syz.x'}}
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struct S *ps = &syz;
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if (ps->x)
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//expected-note@-1{{Assuming field 'x' is null}}
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//expected-note@-2{{Taking false branch}}
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m++;
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int *p = syz.x; //expected-note {{'p' initialized to a null pointer value}}
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m = *p; // expected-warning {{Dereference of null pointer (loaded from variable 'p')}}
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// expected-note@-1 {{Dereference of null pointer (loaded from variable 'p')}}
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}
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