75 lines
3.4 KiB
C++
75 lines
3.4 KiB
C++
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// 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 testUnsignedIntMacro(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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// FIXME: 'i' can never be equal to UINT32_MAX - it doesn't even fit into its
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// type ('int'). This should say "Assuming 'i' is equal to -1".
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void testIntMacro(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 {{Assuming 'd' is equal to DBL_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 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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#define nested_null_split(x) if ((x) != UINT32_MAX) {}
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void testNestedNullSplitMacro(int i, int *p) {
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nested_null_split(i); // expected-note {{Assuming 'i' is equal to -1}}
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// expected-note@-1 {{Taking false branch}}
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if (!p) // expected-note {{Assuming 'p' is null}}
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// expected-note@-1 {{Taking true branch}}
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*p = 1; // 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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