clang/test/Sema/attr-decl-after-definition.c

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2
   3 void foo(void);
   4 void foo(void) __attribute__((unused));
   5 void foo(void) __attribute__((unused));
   6 void foo(void){} // expected-note {{previous definition is here}}
   7 void foo(void) __attribute__((constructor)); // expected-warning {{must precede definition}}
   8 void foo(void);
   9
  10 int bar;
  11 extern int bar;
  12 int bar;
  13 int bar __attribute__((weak));
  14 int bar __attribute__((used));
  15 extern int bar __attribute__((weak));
  16 int bar = 0; // expected-note {{previous definition is here}}
  17 int bar __attribute__((weak)); // no warning as it matches the existing
  18                                // attribute.
  19 int bar __attribute__((used,
  20                        visibility("hidden"))); // expected-warning {{must precede definition}}
  21 int bar;
  22
  23 struct zed {  // expected-note {{previous definition is here}}
  24 };
  25 struct __attribute__((visibility("hidden"))) zed; // expected-warning {{must precede definition}}
  26
  27 struct __attribute__((visibility("hidden"))) zed2 {
  28 };
  29 struct __attribute__((visibility("hidden"))) zed2;
  30
  31 struct __attribute__((visibility("hidden"))) zed3 {  // expected-note {{previous definition is here}}
  32 };
  33 struct __attribute__((visibility("hidden"),
  34                      packed  // expected-warning {{must precede definition}}
  35                      )) zed3;
  36
  37 struct __attribute__((visibility("hidden"))) zed4 {  // expected-note {{previous attribute is here}}
  38 };
  39 struct __attribute__((visibility("default"))) zed4; // expected-error {{visibility does not match previous declaration}}