1 /* Test for format attributes: test default attributes are silently ignored
2 when a function is redeclared in an inappropriate manner. */
3 /* Origin: Joseph Myers <jsm28@cam.ac.uk> */
4 /* { dg-do compile } */
5 /* { dg-options "-std=gnu99 -Wformat" } */
6
7 /* We can't #include "format.h" here. */
8
9 /* This scanf declaration is static, so can't be the system function. */
10 static int scanf(const char *restrict, ...);
11
12 /* This sscanf declaration doesn't have variable arguments, so isn't
13 compatible with a format attribute. */
14 extern int sscanf(const char *restrict, const char *restrict, int *); /* { dg-warning "conflict" "conflict" } */
15
16 void
foo(const char * s,int * p)17 foo (const char *s, int *p)
18 {
19 scanf("%ld", p); /* { dg-bogus "format" "static" } */
20 sscanf(s, "%ld", p); /* { dg-bogus "format" "wrong type" } */
21 }
22
23 /* Dummy definition of scanf. */
24 static int
scanf(const char * restrict fmt,...)25 scanf (const char *restrict fmt, ...)
26 {
27 return 0;
28 }
29