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

   1 /* Test for format attributes: test use of __attribute__.  */
   2 /* Origin: Joseph Myers <jsm28@cam.ac.uk> */
   3 /* { dg-do compile } */
   4 /* { dg-options "-std=gnu99 -Wformat" } */
   5
   6 #define DONT_GNU_PROTOTYPE
   7 #include "format.h"
   8
   9 extern void tformatprintf (const char *, ...) __attribute__((format(gnu_attr_printf, 1, 2)));
  10 extern void tformat__printf__ (const char *, ...) __attribute__((format(gnu_attr___printf__, 1, 2)));
  11 extern void tformatscanf (const char *, ...) __attribute__((format(gnu_attr_scanf, 1, 2)));
  12 extern void tformat__scanf__ (const char *, ...) __attribute__((format(gnu_attr___scanf__, 1, 2)));
  13 extern void tformatstrftime (const char *) __attribute__((format(gnu_attr_strftime, 1, 0)));
  14 extern void tformat__strftime__ (const char *) __attribute__((format(gnu_attr___strftime__, 1, 0)));
  15 extern void tformatstrfmon (const char *, ...) __attribute__((format(strfmon, 1, 2)));
  16 extern void tformat__strfmon__ (const char *, ...) __attribute__((format(__strfmon__, 1, 2)));
  17 extern void t__format__printf (const char *, ...) __attribute__((__format__(gnu_attr_printf, 1, 2)));
  18 extern void t__format____printf__ (const char *, ...) __attribute__((__format__(gnu_attr___printf__, 1, 2)));
  19 extern void t__format__scanf (const char *, ...) __attribute__((__format__(gnu_attr_scanf, 1, 2)));
  20 extern void t__format____scanf__ (const char *, ...) __attribute__((__format__(gnu_attr___scanf__, 1, 2)));
  21 extern void t__format__strftime (const char *) __attribute__((__format__(gnu_attr_strftime, 1, 0)));
  22 extern void t__format____strftime__ (const char *) __attribute__((__format__(gnu_attr___strftime__, 1, 0)));
  23 extern void t__format__strfmon (const char *, ...) __attribute__((__format__(strfmon, 1, 2)));
  24 extern void t__format____strfmon__ (const char *, ...) __attribute__((__format__(__strfmon__, 1, 2)));
  25
  26 extern char *tformat_arg (const char *) __attribute__((format_arg(1)));
  27 extern char *t__format_arg__ (const char *) __attribute__((__format_arg__(1)));
  28
  29 void
  30 foo (int i, int *ip, double d)
  31 {
  32   tformatprintf ("%d", i);
  33   tformatprintf ("%"); /* { dg-warning "19:format" "attribute format printf" } */
  34   tformat__printf__ ("%d", i);
  35   tformat__printf__ ("%"); /* { dg-warning "format" "attribute format __printf__" } */
  36   tformatscanf ("%d", ip);
  37   tformatscanf ("%"); /* { dg-warning "format" "attribute format scanf" } */
  38   tformat__scanf__ ("%d", ip);
  39   tformat__scanf__ ("%"); /* { dg-warning "22:format" "attribute format __scanf__" } */
  40   tformatstrftime ("%a");
  41   tformatstrftime ("%"); /* { dg-warning "format" "attribute format strftime" } */
  42   tformat__strftime__ ("%a");
  43   tformat__strftime__ ("%"); /* { dg-warning "format" "attribute format __strftime__" } */
  44   tformatstrfmon ("%n", d);
  45   tformatstrfmon ("%"); /* { dg-warning "format" "attribute format strfmon" } */
  46   tformat__strfmon__ ("%n", d);
  47   tformat__strfmon__ ("%"); /* { dg-warning "format" "attribute format __strfmon__" } */
  48   t__format__printf ("%d", i);
  49   t__format__printf ("%"); /* { dg-warning "format" "attribute __format__ printf" } */
  50   t__format____printf__ ("%d", i);
  51   t__format____printf__ ("%"); /* { dg-warning "format" "attribute __format__ __printf__" } */
  52   t__format__scanf ("%d", ip);
  53   t__format__scanf ("%"); /* { dg-warning "format" "attribute __format__ scanf" } */
  54   t__format____scanf__ ("%d", ip);
  55   t__format____scanf__ ("%"); /* { dg-warning "format" "attribute __format__ __scanf__" } */
  56   t__format__strftime ("%a");
  57   t__format__strftime ("%"); /* { dg-warning "format" "attribute __format__ strftime" } */
  58   t__format____strftime__ ("%a");
  59   t__format____strftime__ ("%"); /* { dg-warning "format" "attribute __format__ __strftime__" } */
  60   t__format__strfmon ("%n", d);
  61   t__format__strfmon ("%"); /* { dg-warning "format" "attribute __format__ strfmon" } */
  62   t__format____strfmon__ ("%n", d);
  63   t__format____strfmon__ ("%"); /* { dg-warning "format" "attribute __format__ __strfmon__" } */
  64   tformatprintf (tformat_arg ("%d"), i);
  65   tformatprintf (tformat_arg ("%")); /* { dg-warning "format" "attribute format_arg" } */
  66   tformatprintf (t__format_arg__ ("%d"), i);
  67   tformatprintf (t__format_arg__ ("%")); /* { dg-warning "format" "attribute __format_arg__" } */
  68 }