File: number-object-conversion.c

package info (click to toggle)
llvm-toolchain-14 1%3A14.0.6-20
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 1,496,436 kB
  • sloc: cpp: 5,593,990; ansic: 986,873; asm: 585,869; python: 184,223; objc: 72,530; lisp: 31,119; f90: 27,793; javascript: 9,780; pascal: 9,762; sh: 9,482; perl: 7,468; ml: 5,432; awk: 3,523; makefile: 2,547; xml: 953; cs: 573; fortran: 567
file content (40 lines) | stat: -rw-r--r-- 2,750 bytes parent folder | download | duplicates (15)
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()?}}
}