clang/test/Preprocessor/ext-pp-directive.c

   1 // For C
   2 // RUN: %clang_cc1 -std=c99 -fsyntax-only -verify=pre-c2x-pedantic -pedantic %s
   3 // RUN: %clang_cc1 -std=c2x -fsyntax-only -verify=pre-c2x-compat -Wpre-c2x-compat %s
   4 // RUN: not %clang_cc1 -std=c99 -fsyntax-only -verify %s
   5 // RUN: not %clang_cc1 -std=c2x -fsyntax-only -verify -pedantic %s
   6 // RUN: not %clang_cc1 -std=c2x -fsyntax-only -verify %s
   7
   8 // For C++
   9 // RUN: %clang_cc1 -x c++ -fsyntax-only -verify=pre-cpp23-pedantic -pedantic %s
  10 // RUN: %clang_cc1 -x c++ -std=c++23 -fsyntax-only -verify=pre-cpp23-compat -Wpre-c++23-compat %s
  11 // RUN: not %clang_cc1 -x c++ -fsyntax-only -verify %s
  12 // RUN: not %clang_cc1 -x c++ -std=c++23 -fsyntax-only -verify -pedantic %s
  13 // RUN: not %clang_cc1 -x c++ -std=c++23 -fsyntax-only -verify %s
  14
  15 int x;
  16
  17 #if 1
  18 #elifdef A // #1
  19 #endif
  20 // For C
  21 // pre-c2x-pedantic-warning@#1 {{use of a '#elifdef' directive is a C23 extension}}
  22 // pre-c2x-compat-warning@#1 {{use of a '#elifdef' directive is incompatible with C standards before C23}}
  23
  24 // For C++
  25 // pre-cpp23-pedantic-warning@#1 {{use of a '#elifdef' directive is a C++23 extension}}
  26 // pre-cpp23-compat-warning@#1 {{use of a '#elifdef' directive is incompatible with C++ standards before C++23}}
  27
  28 #if 1
  29 #elifndef B // #2
  30 #endif
  31 // For C
  32 // pre-c2x-pedantic-warning@#2 {{use of a '#elifndef' directive is a C23 extension}}
  33 // pre-c2x-compat-warning@#2 {{use of a '#elifndef' directive is incompatible with C standards before C23}}
  34
  35 // For C++
  36 // pre-cpp23-pedantic-warning@#2 {{use of a '#elifndef' directive is a C++23 extension}}
  37 // pre-cpp23-compat-warning@#2 {{use of a '#elifndef' directive is incompatible with C++ standards before C++23}}
  38
  39 #if 0
  40 #elifdef C
  41 #endif
  42 // For C
  43 // pre-c2x-pedantic-warning@-3 {{use of a '#elifdef' directive is a C23 extension}}
  44 // pre-c2x-compat-warning@-4 {{use of a '#elifdef' directive is incompatible with C standards before C23}}
  45
  46 // For C++
  47 // pre-cpp23-pedantic-warning@-7 {{use of a '#elifdef' directive is a C++23 extension}}
  48 // pre-cpp23-compat-warning@-8 {{use of a '#elifdef' directive is incompatible with C++ standards before C++23}}
  49
  50 #if 0
  51 #elifndef D
  52 #endif
  53 // For C
  54 // pre-c2x-pedantic-warning@-3 {{use of a '#elifndef' directive is a C23 extension}}
  55 // pre-c2x-compat-warning@-4 {{use of a '#elifndef' directive is incompatible with C standards before C23}}
  56
  57 // For C++
  58 // pre-cpp23-pedantic-warning@-7 {{use of a '#elifndef' directive is a C++23 extension}}
  59 // pre-cpp23-compat-warning@-8 {{use of a '#elifndef' directive is incompatible with C++ standards before C++23}}
  60
  61 #warning foo
  62 // For C
  63 // pre-c2x-pedantic-warning@-2 {{#warning is a C23 extension}}
  64 // pre-c2x-pedantic-warning@-3 {{foo}}
  65 // pre-c2x-compat-warning@-4 {{#warning is incompatible with C standards before C23}}
  66 // pre-c2x-compat-warning@-5 {{foo}}
  67
  68 // For C++
  69 // pre-cpp23-pedantic-warning@-8 {{#warning is a C++23 extension}}
  70 // pre-cpp23-pedantic-warning@-9 {{foo}}
  71 // pre-cpp23-compat-warning@-10 {{#warning is incompatible with C++ standards before C++23}}
  72 // pre-cpp23-compat-warning@-11 {{foo}}