1  /* PR39565: Static variable leaves undefined symbol in object file.
       2     Variables codestrs_4 and codestrs_8 should not be undefined,
       3     when this program is compiled at -O2. As a basic sanity test,
       4     verify that this program compiles into an executable and runs. */
       5  
       6  /* { dg-do run } */
       7  /* { dg-options "-O2" } */
       8  
       9  extern void abort (void);
      10  extern void exit (int);
      11  extern int strcmp (const char *, const char *);
      12  
      13  static const union codestrs_t_4 {
      14    struct {
      15      char str_2[sizeof ("Illegal opcode")];
      16    };
      17    char str[0];
      18  } codestrs_4 = { {"Illegal opcode"} };
      19  
      20  static const union codestrs_t_8 {
      21    struct {
      22      char str_12[sizeof ("Integer divide by zero")];
      23    };
      24    char str[0];
      25  } codestrs_8 = { {"Integer divide by zero"} };
      26  
      27  const char *
      28  psiginfo (int pinfo)
      29  {
      30    const char *base = ((void *)0);
      31  
      32    switch (pinfo)
      33      {
      34      case 4: base = codestrs_4.str; break;
      35      case 8: base = codestrs_8.str; break;
      36      }
      37    return base;
      38  }
      39  
      40  int
      41  main (void)
      42  {
      43    if (strcmp (psiginfo (4), codestrs_4.str))
      44      abort ();
      45    if (strcmp (psiginfo (8), codestrs_8.str))
      46      abort ();
      47    exit (0);
      48  }