// RUN: %clang_cc1 -verify -fsyntax-only %s

extern int g0 __attribute__((weak));
extern int g1 __attribute__((weak_import));
int g2 __attribute__((weak));
int g3 __attribute__((weak_import)); // expected-warning {{'weak_import' attribute cannot be specified on a definition}}
int __attribute__((weak_import)) g4(void);
void __attribute__((weak_import)) g5(void) {
}

struct __attribute__((weak)) s0 {}; // expected-warning {{'weak' attribute only applies to variables, functions, and classes}}
struct __attribute__((weak_import)) s1 {}; // expected-warning {{'weak_import' attribute only applies to variables and functions}}

static int x __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}

// rdar://9538608
int C; // expected-note {{previous definition is here}}
extern int C __attribute__((weak_import)); // expected-warning {{an already-declared variable is made a weak_import declaration}}

static int pr14946_x;
extern int pr14946_x  __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}

static void pr14946_f();
void pr14946_f() __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}

// RUN: %clang_cc1 -verify -fsyntax-only %s

extern int f0() __attribute__((weak));
extern int g0 __attribute__((weak));
extern int g1 __attribute__((weak_import));
int f2() __attribute__((weak));
int g2 __attribute__((weak));
int g3 __attribute__((weak_import)); // expected-warning {{'weak_import' attribute cannot be specified on a definition}}
int __attribute__((weak_import)) g4(void);
void __attribute__((weak_import)) g5(void) {
}

struct __attribute__((weak)) s0 {}; // expected-warning {{'weak' attribute only applies to variables, functions, and classes}}
struct __attribute__((weak_import)) s1 {}; // expected-warning {{'weak_import' attribute only applies to variables and functions}}

static int f() __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
static int x __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}

// rdar://9538608
int C; // expected-note {{previous definition is here}}
extern int C __attribute__((weak_import)); // expected-warning {{an already-declared variable is made a weak_import declaration}}

static int pr14946_x;
extern int pr14946_x  __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}

static void pr14946_f();
void pr14946_f() __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}

Add tests for weak functions
[Sema] Add tests for weak functions

I found these checks to be missing, just add some simple cases.

Differential Revision: https://reviews.llvm.org/D47200

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@333283 91177308-0d34-0410-b5e6-96231b3b80d8
