49 lines
2.2 KiB
C++
49 lines
2.2 KiB
C++
// RUN: %clang_analyze_cc1 -std=c++11 -analyzer-checker=core,osx -analyzer-output=text -verify %s
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#include "../Inputs/system-header-simulator.h"
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#include "../Inputs/system-header-simulator-cxx.h"
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void testIntMacro(unsigned int i) {
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if (i == UINT32_MAX) { // expected-note {{Assuming 'i' is equal to UINT32_MAX}}
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// expected-note@-1 {{Taking true branch}}
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char *p = NULL; // expected-note {{'p' initialized to a null pointer value}}
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*p = 7; // expected-warning {{Dereference of null pointer (loaded from variable 'p')}}
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// expected-note@-1 {{Dereference of null pointer (loaded from variable 'p')}}
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}
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}
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void testNULLMacro(int *p) {
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if (p == NULL) { // expected-note {{Assuming 'p' is equal to NULL}}
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// expected-note@-1 {{Taking true branch}}
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*p = 7; // expected-warning {{Dereference of null pointer (loaded from variable 'p')}}
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// expected-note@-1 {{Dereference of null pointer (loaded from variable 'p')}}
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}
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}
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void testnullptrMacro(int *p) {
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if (p == nullptr) { // expected-note {{Assuming pointer value is null}}
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// expected-note@-1 {{Taking true branch}}
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*p = 7; // expected-warning {{Dereference of null pointer (loaded from variable 'p')}}
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// expected-note@-1 {{Dereference of null pointer (loaded from variable 'p')}}
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}
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}
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// There are no path notes on the comparison to float types.
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void testDoubleMacro(double d) {
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if (d == DBL_MAX) { // expected-note {{Taking true branch}}
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char *p = NULL; // expected-note {{'p' initialized to a null pointer value}}
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*p = 7; // expected-warning {{Dereference of null pointer (loaded from variable 'p')}}
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// expected-note@-1 {{Dereference of null pointer (loaded from variable 'p')}}
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}
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}
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void testboolMacro(bool b, int *p) {
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p = nullptr; // expected-note {{Null pointer value stored to 'p'}}
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if (b == false) { // expected-note {{Assuming the condition is true}}
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// expected-note@-1 {{Taking true branch}}
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*p = 7; // expected-warning {{Dereference of null pointer (loaded from variable 'p')}}
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// expected-note@-1 {{Dereference of null pointer (loaded from variable 'p')}}
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}
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}
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