gcc/testsuite/gcc.dg/Wstringop-overflow-5.c

   1 /* PR tree-optimization/85259 - Missing -Wstringop-overflow= since r256683
   2    { dg-do compile }
   3    { dg-options "-O2 -Wstringop-overflow" } */
   4
   5 extern char* strcpy (char*, const char*);
   6 extern char* strcat (char*, const char*);
   7
   8 char a1[1];
   9 char a2[2];
  10 char a3[3];
  11 char a4[4];
  12 char a5[5];
  13 char a6[6];
  14 char a7[7];
  15 char a8[8];
  16
  17 /* Verify that at least one instance of -Wstringop-overflow is issued
  18    for each pair of strcpy/strcat calls.  */
  19
  20 void test_strcpy_strcat_1 (void)
  21 {
  22   strcpy (a1, "1"), strcat (a1, "2");   /* { dg-warning "\\\[-Wstringop-overflow=]" } */
  23 }
  24
  25 void test_strcpy_strcat_2 (void)
  26 {
  27   strcpy (a2, "12"), strcat (a2, "3");   /* { dg-warning "\\\[-Wstringop-overflow=]" } */
  28 }
  29
  30 void test_strcpy_strcat_3 (void)
  31 {
  32   strcpy (a3, "123"), strcat (a3, "4");   /* { dg-warning "\\\[-Wstringop-overflow=]" } */
  33 }
  34
  35 void test_strcpy_strcat_4 (void)
  36 {
  37   strcpy (a4, "1234"), strcat (a4, "5");   /* { dg-warning "\\\[-Wstringop-overflow=]" } */
  38 }
  39
  40 void test_strcpy_strcat_5 (void)
  41 {
  42   strcpy (a5, "12345"), strcat (a5, "6");   /* { dg-warning "\\\[-Wstringop-overflow=]" } */
  43 }
  44
  45 void test_strcpy_strcat_6 (void)
  46 {
  47   strcpy (a6, "123456"), strcat (a6, "7");   /* { dg-warning "\\\[-Wstringop-overflow=]" } */
  48 }
  49
  50 void test_strcpy_strcat_7 (void)
  51 {
  52   strcpy (a7, "1234567"), strcat (a7, "8");   /* { dg-warning "\\\[-Wstringop-overflow=]" } */
  53 }
  54
  55 void test_strcpy_strcat_8 (void)
  56 {
  57   strcpy (a8, "12345678"), strcat (a8, "9");   /* { dg-warning "\\\[-Wstringop-overflow=]" } */
  58 }