number-object-conversion.c
2.69 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
// RUN: %clang_analyze_cc1 -triple i386-apple-darwin10 -w -analyzer-checker=osx.NumberObjectConversion %s -verify
// RUN: %clang_analyze_cc1 -triple i386-apple-darwin10 -w -analyzer-checker=osx.NumberObjectConversion -analyzer-config osx.NumberObjectConversion:Pedantic=true -DPEDANTIC %s -verify
#define NULL ((void *)0)
typedef const struct __CFNumber *CFNumberRef;
void takes_int(int);
void bad(CFNumberRef p) {
#ifdef PEDANTIC
if (p) {} // expected-warning{{Converting a pointer value of type 'CFNumberRef' to a primitive boolean value; instead, either compare the pointer to NULL or call CFNumberGetValue()}}
if (!p) {} // expected-warning{{Converting a pointer value of type 'CFNumberRef' to a primitive boolean value; instead, either compare the pointer to NULL or call CFNumberGetValue()}}
p ? 1 : 2; // expected-warning{{Converting a pointer value of type 'CFNumberRef' to a primitive boolean value; instead, either compare the pointer to NULL or call CFNumberGetValue()}}
if (p == 0) {} // expected-warning{{Comparing a pointer value of type 'CFNumberRef' to a primitive integer value; instead, either compare the pointer to NULL or compare the result of calling CFNumberGetValue()}}
#else
if (p) {} // no-warning
if (!p) {} // no-warning
p ? 1 : 2; // no-warning
if (p == 0) {} // no-warning
#endif
if (p > 0) {} // expected-warning{{Comparing a pointer value of type 'CFNumberRef' to a primitive integer value; did you mean to compare the result of calling CFNumberGetValue()?}}
int x = p; // expected-warning{{Converting a pointer value of type 'CFNumberRef' to a primitive integer value; did you mean to call CFNumberGetValue()?}}
x = p; // expected-warning{{Converting a pointer value of type 'CFNumberRef' to a primitive integer value; did you mean to call CFNumberGetValue()?}}
takes_int(p); // expected-warning{{Converting a pointer value of type 'CFNumberRef' to a primitive integer value; did you mean to call CFNumberGetValue()?}}
takes_int(x); // no-warning
}
// Conversion of a pointer to an intptr_t is fine.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long fintptr_t; // Fake, for testing the regex.
void test_intptr_t(CFNumberRef p) {
(long)p; // expected-warning{{Converting a pointer value of type 'CFNumberRef' to a primitive integer value; did you mean to call CFNumberGetValue()?}}
(intptr_t)p; // no-warning
(unsigned long)p; // expected-warning{{Converting a pointer value of type 'CFNumberRef' to a primitive integer value; did you mean to call CFNumberGetValue()?}}
(uintptr_t)p; // no-warning
(fintptr_t)p; // expected-warning{{Converting a pointer value of type 'CFNumberRef' to a primitive integer value; did you mean to call CFNumberGetValue()?}}
}