| // 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(void) { |
| 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 passed as 1st argument to memory copy function}} |
| // expected-note@-1{{Null pointer passed as 1st argument 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 passed as 1st argument to memory copy function}} |
| // expected-note@-1{{Null pointer passed as 1st argument 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 passed as 1st argument to memory copy function}} |
| // expected-note@-1{{Null pointer passed as 1st argument 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 passed as 1st argument to memory copy function}} |
| // expected-note@-1{{Null pointer passed as 1st argument 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 passed as 1st argument to memory copy function}} |
| // expected-note@-1{{Null pointer passed as 1st argument 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 passed as 1st argument to memory copy function}} |
| // expected-note@-1{{Null pointer passed as 1st argument to memory copy function}} |
| } |
