gcc/testsuite/gcc.dg/Wstringop-overflow-51.c

   1 /* Test case derived from Binutils/GDB's readline/readline/histexpand.c.
   2    { dg-do compile }
   3    { dg-options "-O2 -Wall" } */
   4
   5 char *
   6 get_subst_pattern (char *str, int *iptr, int delimiter, int is_rhs, int *lenptr)
   7 {
   8   int si, i, j, k;
   9   char *s;
  10
  11   s = 0;
  12   i = *iptr;
  13
  14   for (si = i; str[si] && str[si] != delimiter; si++)
  15       if (str[si] == '\\' && str[si + 1] == delimiter)
  16         si++;
  17
  18   if (si > i || is_rhs)
  19     {
  20       s = (char *)__builtin_malloc (si - i + 1);
  21       for (j = 0, k = i; k < si; j++, k++)
  22         {
  23           /* Remove a backslash quoting the search string delimiter. */
  24           if (str[k] == '\\' && str[k + 1] == delimiter)
  25             k++;
  26           s[j] = str[k];   // { dg-bogus "-Wstringop-overflow" }
  27         }
  28       s[j] = '\0';
  29       if (lenptr)
  30         *lenptr = j;
  31     }
  32
  33   return s;
  34 }