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