// RUN: %clang_analyze_cc1 -w -x c -analyzer-checker=core,unix -analyzer-output=text -verify %s // Avoid the crash when finding the expression for tracking the origins // of the null pointer for path notes. void pr34373() { int *a = 0; // expected-note{{'a' initialized to a null pointer value}} (a + 0)[0]; // expected-warning{{Array access results in a null pointer dereference}} // expected-note@-1{{Array access results in a null pointer dereference}} } typedef __typeof(sizeof(int)) size_t; void *memcpy(void *dest, const void *src, unsigned long count); void f1(char *source) { char *destination = 0; // expected-note{{'destination' initialized to a null pointer value}} memcpy(destination + 0, source, 10); // expected-warning{{Null pointer argument in call to memory copy function}} // expected-note@-1{{Null pointer argument in call to memory copy function}} } void f2(char *source) { char *destination = 0; // expected-note{{'destination' initialized to a null pointer value}} memcpy(destination - 0, source, 10); // expected-warning{{Null pointer argument in call to memory copy function}} // expected-note@-1{{Null pointer argument in call to memory copy function}} } void f3(char *source) { char *destination = 0; // expected-note{{'destination' initialized to a null pointer value}} destination = destination + 0; // expected-note{{Null pointer value stored to 'destination'}} memcpy(destination, source, 10); // expected-warning{{Null pointer argument in call to memory copy function}} // expected-note@-1{{Null pointer argument in call to memory copy function}} } void f4(char *source) { char *destination = 0; // expected-note{{'destination' initialized to a null pointer value}} destination = destination - 0; // expected-note{{Null pointer value stored to 'destination'}} memcpy(destination, source, 10); // expected-warning{{Null pointer argument in call to memory copy function}} // expected-note@-1{{Null pointer argument in call to memory copy function}} } void f5(char *source) { char *destination1 = 0; // expected-note{{'destination1' initialized to a null pointer value}} char *destination2 = destination1 + 0; // expected-note{{'destination2' initialized to a null pointer value}} memcpy(destination2, source, 10); // expected-warning{{Null pointer argument in call to memory copy function}} // expected-note@-1{{Null pointer argument in call to memory copy function}} } void f6(char *source) { char *destination1 = 0; // expected-note{{'destination1' initialized to a null pointer value}} char *destination2 = destination1 - 0; // expected-note{{'destination2' initialized to a null pointer value}} memcpy(destination2, source, 10); // expected-warning{{Null pointer argument in call to memory copy function}} // expected-note@-1{{Null pointer argument in call to memory copy function}} } |