llvm-project/clang/test/Sema/attr-decl-after-definition.c
Aaron Ballman e765e0bc8e Use functions with prototypes when appropriate; NFC
A significant number of our tests in C accidentally use functions
without prototypes. This patch converts the function signatures to have
a prototype for the situations where the test is not specific to K&R C
declarations. e.g.,

  void func();

becomes

  void func(void);

This is the first batch of tests being updated (there are a significant
number of other tests left to be updated).
2022-02-03 16:42:27 -05:00

40 lines
1.5 KiB
C

// RUN: %clang_cc1 -fsyntax-only -verify %s
void foo(void);
void foo(void) __attribute__((unused));
void foo(void) __attribute__((unused));
void foo(void){} // expected-note {{previous definition is here}}
void foo(void) __attribute__((constructor)); // expected-warning {{must precede definition}}
void foo(void);
int bar;
extern int bar;
int bar;
int bar __attribute__((weak));
int bar __attribute__((used));
extern int bar __attribute__((weak));
int bar = 0; // expected-note {{previous definition is here}}
int bar __attribute__((weak)); // no warning as it matches the existing
// attribute.
int bar __attribute__((used,
visibility("hidden"))); // expected-warning {{must precede definition}}
int bar;
struct zed { // expected-note {{previous definition is here}}
};
struct __attribute__((visibility("hidden"))) zed; // expected-warning {{must precede definition}}
struct __attribute__((visibility("hidden"))) zed2 {
};
struct __attribute__((visibility("hidden"))) zed2;
struct __attribute__((visibility("hidden"))) zed3 { // expected-note {{previous definition is here}}
};
struct __attribute__((visibility("hidden"),
packed // expected-warning {{must precede definition}}
)) zed3;
struct __attribute__((visibility("hidden"))) zed4 { // expected-note {{previous attribute is here}}
};
struct __attribute__((visibility("default"))) zed4; // expected-error {{visibility does not match previous declaration}}