File: ptr-iter.cpp

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 (28 lines) | stat: -rw-r--r-- 958 bytes parent folder | download | duplicates (17) 
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
 
// RUN: %clang_analyze_cc1 %s -std=c++14 -analyzer-output=text -verify \
// RUN: -analyzer-checker=core,alpha.nondeterminism.PointerIteration

#include "Inputs/system-header-simulator-cxx.h"

template<class T>
void f(T x);

void PointerIteration() {
  int a = 1, b = 2;
  std::set<int> OrderedIntSet = {a, b};
  std::set<int *> OrderedPtrSet = {&a, &b};
  std::unordered_set<int> UnorderedIntSet = {a, b};
  std::unordered_set<int *> UnorderedPtrSet = {&a, &b};

  for (auto i : OrderedIntSet) // no-warning
    f(i);

  for (auto i : OrderedPtrSet) // no-warning
    f(i);

  for (auto i : UnorderedIntSet) // no-warning
    f(i);

  for (auto i : UnorderedPtrSet) // expected-warning {{Iteration of pointer-like elements can result in non-deterministic ordering}} [alpha.nondeterminism.PointerIteration]
// expected-note@-1 {{Iteration of pointer-like elements can result in non-deterministic ordering}} [alpha.nondeterminism.PointerIteration]
    f(i);
}