clang/test/Sema/alias-redefinition.c

   1 // RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -Wno-strict-prototypes -fsyntax-only -verify %s
   2
   3 void f0() {}
   4 void fun0(void) __attribute((alias("f0")));
   5
   6 void f1() {}
   7 void fun1() {} // expected-note {{previous definition}}
   8 void fun1(void) __attribute((alias("f1"))); // expected-error {{redefinition of 'fun1'}}
   9
  10 void f2() {}
  11 void fun2(void) __attribute((alias("f2"))); // expected-note {{previous definition}}
  12 void fun2() {} // expected-error {{redefinition of 'fun2'}}
  13
  14 void f3() {}
  15 void fun3(void) __attribute((alias("f3"))); // expected-note {{previous definition}}
  16 void fun3(void) __attribute((alias("f3"))); // expected-error {{redefinition of 'fun3'}}
  17
  18 void f4() {}
  19 void fun4(void) __attribute((alias("f4")));
  20 void fun4(void);
  21
  22 void f5() {}
  23 void __attribute((alias("f5"))) fun5(void) {} // expected-error {{definition 'fun5' cannot also be an alias}}
  24
  25 int var1 __attribute((alias("v1"))); // expected-error {{definition 'var1' cannot also be an alias}}
  26 static int var2 __attribute((alias("v2"))) = 2; // expected-error {{definition 'var2' cannot also be an alias}}
  27
  28 extern int var3 __attribute__((alias("C"))); // expected-note{{previous definition is here}}
  29 int var3 = 3; // expected-error{{redefinition of 'var3'}}
  30
  31 int var4; // expected-note{{previous definition is here}}
  32 extern int var4 __attribute__((alias("v4"))); // expected-error{{alias definition of 'var4' after tentative definition}}