File: errno-options.c

package info (click to toggle)
llvm-toolchain-17 1%3A17.0.6-22
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,799,624 kB
  • sloc: cpp: 6,428,607; ansic: 1,383,196; asm: 793,408; python: 223,504; objc: 75,364; f90: 60,502; lisp: 33,869; pascal: 15,282; sh: 9,684; perl: 7,453; ml: 4,937; awk: 3,523; makefile: 2,889; javascript: 2,149; xml: 888; fortran: 619; cs: 573
file content (55 lines) | stat: -rw-r--r-- 1,703 bytes parent folder | download | duplicates (5)
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
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
// RUN: %clang_analyze_cc1 -verify %s \
// RUN:   -analyzer-checker=core \
// RUN:   -analyzer-checker=apiModeling.Errno \
// RUN:   -analyzer-checker=debug.ErrnoTest \
// RUN:   -analyzer-checker=alpha.unix.Errno \
// RUN:   -analyzer-config alpha.unix.Errno:AllowErrnoReadOutsideConditionExpressions=false \
// RUN:   -DERRNO_VAR

// RUN: %clang_analyze_cc1 -verify %s \
// RUN:   -analyzer-checker=core \
// RUN:   -analyzer-checker=apiModeling.Errno \
// RUN:   -analyzer-checker=debug.ErrnoTest \
// RUN:   -analyzer-checker=alpha.unix.Errno \
// RUN:   -analyzer-config alpha.unix.Errno:AllowErrnoReadOutsideConditionExpressions=false \
// RUN:   -DERRNO_FUNC

#include "Inputs/system-header-simulator.h"
#ifdef ERRNO_VAR
#include "Inputs/errno_var.h"
#endif
#ifdef ERRNO_FUNC
#include "Inputs/errno_func.h"
#endif

int ErrnoTesterChecker_setErrnoIfError();

void test_cond() {
  ErrnoTesterChecker_setErrnoIfError();
  int A = errno ? 1 : 2;
  // expected-warning@-1{{An undefined value may be read from 'errno'}}
}

void test_errno_store_into_variable() {
  ErrnoTesterChecker_setErrnoIfError();
  int a = errno;
  // expected-warning@-1{{An undefined value may be read from 'errno'}}
}

void test_errno_store_into_variable_in_expr() {
  ErrnoTesterChecker_setErrnoIfError();
  int a = 4 + errno;
  // expected-warning@-1{{An undefined value may be read from 'errno'}}
}

int test_errno_return() {
  ErrnoTesterChecker_setErrnoIfError();
  return errno;
  // expected-warning@-1{{An undefined value may be read from 'errno'}}
}

int test_errno_return_expr() {
  ErrnoTesterChecker_setErrnoIfError();
  return errno > 10;
  // expected-warning@-1{{An undefined value may be read from 'errno'}}
}