75 lines · cpp
1// RUN: %clang_analyze_cc1 -std=c++11 -analyzer-checker=core,osx -analyzer-output=text -verify %s2 3#include "../Inputs/system-header-simulator.h"4#include "../Inputs/system-header-simulator-cxx.h"5 6void testUnsignedIntMacro(unsigned int i) {7 if (i == UINT32_MAX) { // expected-note {{Assuming 'i' is equal to UINT32_MAX}}8 // expected-note@-1 {{Taking true branch}}9 char *p = NULL; // expected-note {{'p' initialized to a null pointer value}}10 *p = 7; // expected-warning {{Dereference of null pointer (loaded from variable 'p')}}11 // expected-note@-1 {{Dereference of null pointer (loaded from variable 'p')}}12 }13}14 15 16// FIXME: 'i' can never be equal to UINT32_MAX - it doesn't even fit into its17// type ('int'). This should say "Assuming 'i' is equal to -1".18void testIntMacro(int i) {19 if (i == UINT32_MAX) { // expected-note {{Assuming 'i' is equal to UINT32_MAX}}20 // expected-note@-1 {{Taking true branch}}21 char *p = NULL; // expected-note {{'p' initialized to a null pointer value}}22 *p = 7; // expected-warning {{Dereference of null pointer (loaded from variable 'p')}}23 // expected-note@-1 {{Dereference of null pointer (loaded from variable 'p')}}24 }25}26 27 28 29void testNULLMacro(int *p) {30 if (p == NULL) { // expected-note {{Assuming 'p' is equal to NULL}}31 // expected-note@-1 {{Taking true branch}}32 *p = 7; // expected-warning {{Dereference of null pointer (loaded from variable 'p')}}33 // expected-note@-1 {{Dereference of null pointer (loaded from variable 'p')}}34 }35}36 37void testnullptrMacro(int *p) {38 if (p == nullptr) { // expected-note {{Assuming pointer value is null}}39 // expected-note@-1 {{Taking true branch}}40 *p = 7; // expected-warning {{Dereference of null pointer (loaded from variable 'p')}}41 // expected-note@-1 {{Dereference of null pointer (loaded from variable 'p')}}42 }43}44 45// There are no path notes on the comparison to float types.46void testDoubleMacro(double d) {47 if (d == DBL_MAX) { // expected-note {{Assuming 'd' is equal to DBL_MAX}}48 // expected-note@-1 {{Taking true branch}}49 50 char *p = NULL; // expected-note {{'p' initialized to a null pointer value}}51 *p = 7; // expected-warning {{Dereference of null pointer (loaded from variable 'p')}}52 // expected-note@-1 {{Dereference of null pointer (loaded from variable 'p')}}53 }54}55 56void testboolMacro(bool b, int *p) {57 p = nullptr; // expected-note {{Null pointer value stored to 'p'}}58 if (b == false) { // expected-note {{Assuming the condition is true}}59 // expected-note@-1 {{Taking true branch}}60 *p = 7; // expected-warning {{Dereference of null pointer (loaded from variable 'p')}}61 // expected-note@-1 {{Dereference of null pointer (loaded from variable 'p')}}62 }63}64 65#define nested_null_split(x) if ((x) != UINT32_MAX) {}66 67void testNestedNullSplitMacro(int i, int *p) {68 nested_null_split(i); // expected-note {{Assuming 'i' is equal to -1}}69 // expected-note@-1 {{Taking false branch}}70 if (!p) // expected-note {{Assuming 'p' is null}}71 // expected-note@-1 {{Taking true branch}}72 *p = 1; // expected-warning {{Dereference of null pointer (loaded from variable 'p')}}73 // expected-note@-1 {{Dereference of null pointer (loaded from variable 'p')}}74}75