File: warn-array-comparion.cpp

package info (click to toggle)
llvm-toolchain-snapshot 1%3A21~%2B%2B20250612091244%2B3f0cf742ac4e-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,204,364 kB
  • sloc: cpp: 7,565,811; ansic: 1,415,365; asm: 1,031,257; python: 250,248; f90: 93,670; objc: 70,556; lisp: 41,926; pascal: 17,847; sh: 10,009; ml: 5,111; perl: 4,720; awk: 3,523; makefile: 3,423; javascript: 2,272; xml: 892; fortran: 763
file content (23 lines) | stat: -rw-r--r-- 1,375 bytes parent folder | download | duplicates (7) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
 
// RUN: %clang_cc1 -std=c++17 -fsyntax-only -verify %s -verify=expected,not-cxx20
// RUN: %clang_cc1 -std=c++20 -fsyntax-only -Wno-deprecated-array-compare -verify %s -verify=expected,not-cxx20
// RUN: %clang_cc1 -std=c++20 -fsyntax-only -Wdeprecated -verify %s -verify=expected,cxx20
// RUN: %clang_cc1 -std=c++26 -fsyntax-only -Wdeprecated -verify %s -verify=expected,cxx26

typedef struct {
  char str[16];
  int id[16];
} Object;

bool object_equal(const Object &obj1, const Object &obj2) {
  if (obj1.str != obj2.str) // not-cxx20-warning {{comparison between two arrays compare their addresses}} cxx20-warning {{comparison between two arrays is deprecated}}
    return false;           // cxx26-error@-1 {{comparison between two arrays is ill-formed in C++26}}
  if (obj1.id != obj2.id) // not-cxx20-warning {{comparison between two arrays compare their addresses}} cxx20-warning {{comparison between two arrays is deprecated}}
    return false;         // cxx26-error@-1 {{comparison between two arrays is ill-formed in C++26}}
  return true;
}


void foo(int (&array1)[2], int (&array2)[2]) {
  if (array1 == array2) { } // not-cxx20-warning {{comparison between two arrays compare their addresses}} cxx20-warning {{comparison between two arrays is deprecated}}
                            // cxx26-error@-1 {{comparison between two arrays is ill-formed in C++26}}
}