clang/test/Frontend/plugin-attribute.cpp

   1 // RUN: split-file %s %t
   2 // RUN: %clang_cc1 -load %llvmshlibdir/Attribute%pluginext -fsyntax-only -ast-dump -verify %t/good_attr.cpp | FileCheck %s
   3 // RUN: %clang -fplugin=%llvmshlibdir/Attribute%pluginext -fsyntax-only -Xclang -verify %t/bad_attr.cpp
   4 // REQUIRES: plugins, examples
   5 //--- good_attr.cpp
   6 // expected-no-diagnostics
   7 void fn1a() __attribute__((example)) {}
   8 [[example]] void fn1b() {}
   9 [[plugin::example]] void fn1c() {}
  10 void fn2() __attribute__((example("somestring", 1, 2.0))) {}
  11 // CHECK-COUNT-4: -AnnotateAttr 0x{{[0-9a-z]+}} {{<col:[0-9]+(, col:[0-9]+)?>}} "example"
  12 // CHECK: -StringLiteral 0x{{[0-9a-z]+}} {{<col:[0-9]+(, col:[0-9]+)?>}} 'const char[{{[0-9]+}}]' lvalue "somestring"
  13 // CHECK: -IntegerLiteral 0x{{[0-9a-z]+}} {{<col:[0-9]+(, col:[0-9]+)?>}} 'int' 1
  14 // CHECK: -FloatingLiteral 0x{{[0-9a-z]+}} {{<col:[0-9]+(, col:[0-9]+)?>}} 'double' 2.000000e+00
  15
  16 //--- bad_attr.cpp
  17 int var1 __attribute__((example("otherstring"))) = 1; // expected-warning {{'example' attribute only applies to functions}}
  18 class Example {
  19   void __attribute__((example)) fn3(); // expected-error {{'example' attribute only allowed at file scope}}
  20 };
  21 void fn4() __attribute__((example(123))) { } // expected-error {{first argument to the 'example' attribute must be a string literal}}
  22 void fn5() __attribute__((example("a","b", 3, 4.0))) { } // expected-error {{'example' attribute only accepts at most three arguments}}