llvm-project/clang/test/Sema/block-sentinel-attribute.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

26 lines
1.5 KiB
C

// RUN: %clang_cc1 -fblocks -fsyntax-only -verify %s
void (^e) (int arg, const char * format, ...) __attribute__ ((__sentinel__ (1,1)));
int main(void) {
void (^bbad) (int arg, const char * format) __attribute__ ((__sentinel__)) ; // expected-warning {{'sentinel' attribute only supported for variadic blocks}}
bbad = ^void (int arg, const char * format) __attribute__ ((__sentinel__)) {} ; // expected-warning {{'sentinel' attribute only supported for variadic blocks}}
void (^b) (int arg, const char * format, ...) __attribute__ ((__sentinel__)) = // expected-note {{block has been explicitly marked sentinel here}}
^ __attribute__ ((__sentinel__)) (int arg, const char * format, ...) {};
void (^z) (int arg, const char * format, ...) __attribute__ ((__sentinel__ (2))) = ^ __attribute__ ((__sentinel__ (2))) (int arg, const char * format, ...) {}; // expected-note {{block has been explicitly marked sentinel here}}
void (^y) (int arg, const char * format, ...) __attribute__ ((__sentinel__ (5))) = ^ __attribute__ ((__sentinel__ (5))) (int arg, const char * format, ...) {}; // expected-note {{block has been explicitly marked sentinel here}}
b(1, "%s", (void*)0); // OK
b(1, "%s", 0); // expected-warning {{missing sentinel in block call}}
z(1, "%s",4 ,1,0); // expected-warning {{missing sentinel in block call}}
z(1, "%s", (void*)0, 1, 0); // OK
y(1, "%s", 1,2,3,4,5,6,7); // expected-warning {{missing sentinel in block call}}
y(1, "%s", (void*)0,3,4,5,6,7); // OK
}