gcc/testsuite/gcc.dg/Wstringop-overflow-6.c

   1 /* PR tree-optimization/85259 - Missing -Wstringop-overflow= since r256683
   2    { dg-do compile }
   3    { dg-options "-O2 -Wstringop-overflow -ftrack-macro-expansion=0" } */
   4
   5 #define bos1(p) __builtin_object_size (p, 1)
   6 #define strcat(d, s) __builtin___strcat_chk (d, s, bos1 (d))
   7 #define strcpy(d, s) __builtin___strcpy_chk (d, s, bos1 (d))
   8
   9 char a1[1];
  10 char a2[2];
  11 char a3[3];
  12 char a4[4];
  13 char a5[5];
  14 char a6[6];
  15 char a7[7];
  16 char a8[8];
  17
  18 /* Verify that at least one instance of -Wstringop-overflow is issued
  19    for each pair of strcpy/strcat calls.  */
  20
  21 void test_strcpy_strcat_1 (void)
  22 {
  23   strcpy (a1, "1"), strcat (a1, "2");   /* { dg-warning "\\\[-Wstringop-overflow=]" } */
  24 }
  25
  26 void test_strcpy_strcat_2 (void)
  27 {
  28   strcpy (a2, "12"), strcat (a2, "3");   /* { dg-warning "\\\[-Wstringop-overflow=]" "bug 86121" { xfail *-*-* } } */
  29 }
  30
  31 void test_strcpy_strcat_3 (void)
  32 {
  33   strcpy (a3, "123"), strcat (a3, "4");   /* { dg-warning "\\\[-Wstringop-overflow=]" } */
  34 }
  35
  36 void test_strcpy_strcat_4 (void)
  37 {
  38   strcpy (a4, "1234"), strcat (a4, "5");   /* { dg-warning "\\\[-Wstringop-overflow=]" } */
  39 }
  40
  41 void test_strcpy_strcat_5 (void)
  42 {
  43   strcpy (a5, "12345"), strcat (a5, "6");   /* { dg-warning "\\\[-Wstringop-overflow=]" } */
  44 }
  45
  46 void test_strcpy_strcat_6 (void)
  47 {
  48   strcpy (a6, "123456"), strcat (a6, "7");   /* { dg-warning "\\\[-Wstringop-overflow=]" } */
  49 }
  50
  51 void test_strcpy_strcat_7 (void)
  52 {
  53   strcpy (a7, "1234567"), strcat (a7, "8");   /* { dg-warning "\\\[-Wstringop-overflow=]" } */
  54 }
  55
  56 void test_strcpy_strcat_8 (void)
  57 {
  58   strcpy (a8, "12345678"), strcat (a8, "9");   /* { dg-warning "\\\[-Wstringop-overflow=]" } */
  59 }