teak-llvm/clang/test/Sema/alias-redefinition.c
Serge Pavlov 947719bed1 Process attributes 'ifunc' and 'alias' when checking for redefinition
These attributes effectively turn a non-defining declaration into a
definition, so the case when the declaration already has a body must
be diagnosed properly.

Differential Revision: https://reviews.llvm.org/D30032

llvm-svn: 295541
2017-02-18 06:04:15 +00:00

33 lines
1.3 KiB
C

// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -fsyntax-only -verify %s
void f0() {}
void fun0(void) __attribute((alias("f0")));
void f1() {}
void fun1() {} // expected-note {{previous definition}}
void fun1(void) __attribute((alias("f1"))); // expected-error {{redefinition of 'fun1'}}
void f2() {}
void fun2(void) __attribute((alias("f2"))); // expected-note {{previous definition}}
void fun2() {} // expected-error {{redefinition of 'fun2'}}
void f3() {}
void fun3(void) __attribute((alias("f3"))); // expected-note {{previous definition}}
void fun3(void) __attribute((alias("f3"))); // expected-error {{redefinition of 'fun3'}}
void f4() {}
void fun4(void) __attribute((alias("f4")));
void fun4(void);
void f5() {}
void __attribute((alias("f5"))) fun5(void) {} // expected-error {{definition 'fun5' cannot also be an alias}}
int var1 __attribute((alias("v1"))); // expected-error {{definition 'var1' cannot also be an alias}}
static int var2 __attribute((alias("v2"))) = 2; // expected-error {{definition 'var2' cannot also be an alias}}
extern int var3 __attribute__((alias("C"))); // expected-note{{previous definition is here}}
int var3 = 3; // expected-error{{redefinition of 'var3'}}
int var4; // expected-note{{previous definition is here}}
extern int var4 __attribute__((alias("v4"))); // expected-error{{alias definition of 'var4' after tentative definition}}