gcc/testsuite/gcc.dg/format/multattr-2.c

   1 /* Test for multiple format attributes.  Test for printf and scanf attributes
   2    together, in different places on the declarations.  */
   3 /* Origin: Joseph Myers <jsm28@cam.ac.uk> */
   4 /* { dg-do compile } */
   5 /* { dg-options "-std=gnu99 -Wformat" } */
   6
   7 #include "format.h"
   8
   9 /* If we specify multiple attributes for a single function, they should
  10    all apply, wherever they are placed on the declarations.  */
  11
  12 extern __attribute__((__format__(__printf__, 1, 0))) void
  13      my_vprintf_scanf (const char *, va_list, const char *, ...)
  14      __attribute__((__format__(__scanf__, 3, 4)));
  15
  16 extern void (__attribute__((__format__(__printf__, 1, 0))) my_vprintf_scanf2)
  17      (const char *, va_list, const char *, ...)
  18      __attribute__((__format__(__scanf__, 3, 4)));
  19
  20 extern __attribute__((__format__(__scanf__, 3, 4))) void
  21      (__attribute__((__format__(__printf__, 1, 0))) my_vprintf_scanf3)
  22      (const char *, va_list, const char *, ...);
  23
  24 void
  25 foo (va_list ap, int *ip, long *lp)
  26 {
  27   my_vprintf_scanf ("%d", ap, "%d", ip);
  28   my_vprintf_scanf ("%d", ap, "%ld", lp);
  29   my_vprintf_scanf ("%", ap, "%d", ip); /* { dg-warning "format" "printf" } */
  30   my_vprintf_scanf ("%d", ap, "%ld", ip); /* { dg-warning "format" "scanf" } */
  31   my_vprintf_scanf2 ("%d", ap, "%d", ip);
  32   my_vprintf_scanf2 ("%d", ap, "%ld", lp);
  33   my_vprintf_scanf2 ("%", ap, "%d", ip); /* { dg-warning "format" "printf" } */
  34   my_vprintf_scanf2 ("%d", ap, "%ld", ip); /* { dg-warning "format" "scanf" } */
  35   my_vprintf_scanf3 ("%d", ap, "%d", ip);
  36   my_vprintf_scanf3 ("%d", ap, "%ld", lp);
  37   my_vprintf_scanf3 ("%", ap, "%d", ip); /* { dg-warning "format" "printf" } */
  38   my_vprintf_scanf3 ("%d", ap, "%ld", ip); /* { dg-warning "format" "scanf" } */
  39 }