gcc/testsuite/gcc.dg/format/array-1.c

   1 /* Test for format checking of constant arrays.  */
   2 /* Origin: Joseph Myers <jsm28@cam.ac.uk> */
   3 /* { dg-do compile } */
   4 /* { dg-options "-std=gnu99 -Wformat=2" } */
   5
   6 #include "format.h"
   7
   8 const char a1[] = "foo";
   9 const char a2[] = "foo%d";
  10 const char b1[3] = "foo";
  11 const char b2[1] = "1";
  12 static const char c1[] = "foo";
  13 static const char c2[] = "foo%d";
  14 char d[] = "foo";
  15 volatile const char e[] = "foo";
  16
  17 void
  18 foo (int i, long l)
  19 {
  20   const char p1[] = "bar";
  21   const char p2[] = "bar%d";
  22   static const char q1[] = "bar";
  23   static const char q2[] = "bar%d";
  24   printf (a1);
  25   printf (a2, i);
  26   printf (a2, l); /* { dg-warning "11:format" "wrong type with array" } */
  27   printf (b1); /* { dg-warning "11:unterminated" "unterminated array" } */
  28   printf (b2); /* { dg-warning "11:unterminated" "unterminated array" } */
  29   printf (c1);
  30   printf (c2, i);
  31   printf (c2, l); /* { dg-warning "11:format" "wrong type with array" } */
  32   printf (p1);
  33   printf (p2, i);
  34   printf (p2, l); /* { dg-warning "11:format" "wrong type with array" } */
  35   printf (q1);
  36   printf (q2, i);
  37   printf (q2, l); /* { dg-warning "11:format" "wrong type with array" } */
  38   /* Volatile or non-constant arrays must not be checked.  */
  39   printf (d); /* { dg-warning "11:not a string literal" "non-const" } */
  40   printf ((const char *)e); /* { dg-warning "25:not a string literal" "volatile" } */
  41 }