46 lines · c
1// RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-output=text -analyzer-config graph-trim-interval=5 -verify %s2// RUN: %clang_analyze_cc1 -analyzer-checker=core -analyzer-output=plist-multi-file -analyzer-config graph-trim-interval=5 %s -o %t.plist3// RUN: %normalize_plist <%t.plist | diff -ub %S/Inputs/expected-plists/eager-reclamation-path-notes.c.plist -4 5void use(int *ptr, int val) {6 *ptr = val; // expected-warning {{Dereference of null pointer (loaded from variable 'ptr')}}7 // expected-note@-1 {{Dereference of null pointer (loaded from variable 'ptr')}}8}9 10int compute(void) {11 // Do something that will take enough processing to trigger trimming.12 // FIXME: This is actually really sensitive. If the interval timing is just13 // wrong, the node for the actual dereference may also be collected, and all14 // the path notes will disappear.15 return 2 + 3 + 4 + 5 + 6;16}17 18void testSimple(void) {19 int *p = 0;20 // expected-note@-1 {{'p' initialized to a null pointer value}}21 use(p, compute());22 // expected-note@-1 {{Passing null pointer value via 1st parameter 'ptr'}}23 // expected-note@-2 {{Calling 'use'}}24}25 26 27void use2(int *ptr, int val) {28 *ptr = val; // expected-warning {{Dereference of null pointer (loaded from variable 'ptr')}}29 // expected-note@-1 {{Dereference of null pointer (loaded from variable 'ptr')}}30}31 32void passThrough(int *p) {33 use2(p, compute());34 // expected-note@-1 {{Passing null pointer value via 1st parameter 'ptr'}}35 // expected-note@-2 {{Calling 'use2'}}36}37 38void testChainedCalls(void) {39 int *ptr = 0;40 // expected-note@-1 {{'ptr' initialized to a null pointer value}}41 passThrough(ptr);42 // expected-note@-1 {{Passing null pointer value via 1st parameter 'p'}}43 // expected-note@-2 {{Calling 'passThrough'}}44}45 46