clang/test/Sema/internal_linkage.c

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2
   3 int var __attribute__((internal_linkage));
   4 int var2 __attribute__((internal_linkage,common)); // expected-error{{'common' and 'internal_linkage' attributes are not compatible}} \
   5                                                    // expected-note{{conflicting attribute is here}}
   6 int var3 __attribute__((common,internal_linkage)); // expected-error{{'internal_linkage' and 'common' attributes are not compatible}} \
   7                                                    // expected-note{{conflicting attribute is here}}
   8
   9 int var4 __attribute__((common)); // expected-note{{previous declaration is here}} expected-note{{conflicting attribute is here}}
  10 int var4 __attribute__((internal_linkage)); // expected-error{{'internal_linkage' and 'common' attributes are not compatible}} \
  11                                             // expected-error{{'internal_linkage' attribute does not appear on the first declaration}}
  12
  13 int var5 __attribute__((internal_linkage)); // expected-note{{conflicting attribute is here}}
  14 int var5 __attribute__((common)); // expected-error{{'common' and 'internal_linkage' attributes are not compatible}}
  15
  16 __attribute__((internal_linkage)) int f(void) {}
  17 struct __attribute__((internal_linkage)) S { // expected-warning{{'internal_linkage' attribute only applies to variables, functions, and classes}}
  18 };
  19
  20 __attribute__((internal_linkage("foo"))) int g(void) {} // expected-error{{'internal_linkage' attribute takes no arguments}}
  21
  22 int var6 [[clang::internal_linkage]];
  23 int var7 [[clang::internal_linkage]] __attribute__((common)); // expected-error{{'internal_linkage' and 'common' attributes are not compatible}} \
  24                                                    // expected-note{{conflicting attribute is here}}
  25 __attribute__((common)) int var8 [[clang::internal_linkage]]; // expected-error{{'internal_linkage' and 'common' attributes are not compatible}} \
  26                                                    // expected-note{{conflicting attribute is here}}