compilerplugins/clang/test/cstylecast.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #include <sal/config.h>
  11
  12 #include <sal/types.h>
  13
  14 namespace N
  15 {
  16 enum E
  17 {
  18     E1
  19 };
  20
  21 using T = unsigned int;
  22 }
  23
  24 void FunctionalCast(void* p)
  25 {
  26     // expected-error-re@+1 {{Function-style cast from 'void *' to 'sal_IntPtr' (aka '{{.+}}') (performs: reinterpret_cast) (PointerToIntegral) [loplugin:cstylecast]}}
  27     auto n = sal_IntPtr(p);
  28     (void(n)); // no warning expected (outer parens to disambiguate expr vs. decl)
  29 }
  30
  31 static const int C
  32     = (int)0; // expected-error {{C-style cast from 'int' to 'int' (performs: functional cast) (NoOp) [loplugin:cstylecast]}}
  33
  34 int main()
  35 {
  36     constexpr int c1 = 0;
  37     int const c2 = 0;
  38     int n
  39         = (int)0; // expected-error {{C-style cast from 'int' to 'int' (performs: functional cast) (NoOp) [loplugin:cstylecast]}}
  40     n = (signed int)0; // expected-error {{C-style cast from 'int' to 'int' (performs: static_cast) (NoOp) [loplugin:cstylecast]}}
  41     n = (int)~0; // expected-error {{C-style cast from 'int' to 'int' (performs: functional cast) (NoOp) [loplugin:cstylecast]}}
  42     n = (int)-0; // expected-error {{C-style cast from 'int' to 'int' (performs: functional cast) (NoOp) [loplugin:cstylecast]}}
  43     n = (int)+0; // expected-error {{C-style cast from 'int' to 'int' (performs: functional cast) (NoOp) [loplugin:cstylecast]}}
  44     n = (int)!0; // expected-error {{C-style cast from 'bool' to 'int' (performs: functional cast) (NoOp) [loplugin:cstylecast]}}
  45     n = (int) // expected-error {{C-style cast from 'int' to 'int' (performs: functional cast) (NoOp) [loplugin:cstylecast]}}
  46         (0 << 0);
  47     n = (int) // expected-error {{C-style cast from 'const int' to 'int' (performs: functional cast) (NoOp) [loplugin:cstylecast]}}
  48         c1;
  49     n = (int) // expected-error {{C-style cast from 'const int' to 'int' (performs: functional cast) (NoOp) [loplugin:cstylecast]}}
  50         c2;
  51     n = (int) // expected-error {{C-style cast from 'const int' to 'int' (performs: functional cast) (NoOp) [loplugin:cstylecast]}}
  52         C;
  53     n = (int) // expected-error {{C-style cast from 'N::E' to 'int' (performs: functional cast) (NoOp) [loplugin:cstylecast]}}
  54         N::E1;
  55     n = (N::E) // expected-error {{C-style cast from 'N::E' to 'N::E' (performs: functional cast) (NoOp) [loplugin:cstylecast]}}
  56         N::E1;
  57     n = (enum // expected-error {{C-style cast from 'N::E' to 'enum N::E' (performs: static_cast) (NoOp) [loplugin:cstylecast]}}
  58          N::E)N::E1;
  59     n = (N::T)0; // expected-error {{C-style cast from 'int' to 'N::T' (aka 'unsigned int') (performs: functional cast) (NoOp) [loplugin:cstylecast]}}
  60     n = (int) // expected-error-re {{C-style cast from {{.*}} to 'int' (performs: functional cast) (NoOp) [loplugin:cstylecast]}}
  61         sizeof(int);
  62     n = (int) // expected-error {{C-style cast from 'int' to 'int' (performs: static_cast) (NoOp) [loplugin:cstylecast]}}
  63         n;
  64     n = (int)~n; // expected-error {{C-style cast from 'int' to 'int' (performs: static_cast) (NoOp) [loplugin:cstylecast]}}
  65     n = (int)-n; // expected-error {{C-style cast from 'int' to 'int' (performs: static_cast) (NoOp) [loplugin:cstylecast]}}
  66     n = (int)+n; // expected-error {{C-style cast from 'int' to 'int' (performs: static_cast) (NoOp) [loplugin:cstylecast]}}
  67     n = (int)!n; // expected-error {{C-style cast from 'bool' to 'int' (performs: static_cast) (NoOp) [loplugin:cstylecast]}}
  68     n = (int) // expected-error {{C-style cast from 'int' to 'int' (performs: static_cast) (NoOp) [loplugin:cstylecast]}}
  69         (0 << n);
  70     n = (double)0; // expected-error {{C-style cast from 'int' to 'double' (performs: functional cast) (NoOp) [loplugin:cstylecast]}}
  71     (void)n;
  72 }
  73
  74 /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */