gcc/testsuite/gcc.dg/pr27531-1.c

   1 /* PR target/27531 */
   2 /* This test case stressed the register allocator into reloading a LABEL_REF
   3    on sparc, but didn't add a REG_LABEL note, ultimately causing the assembly
   4    output to reference a label that had been eliminated.  */
   5 /* { dg-do link } */
   6 /* { dg-options "-O2" } */
   7 typedef struct _IO_FILE FILE;
   8 char const *RCSname;
   9 void *Locks;
  10 void * Head;
  11 struct Revpairs{
  12     struct Revpairs * rnext;
  13 };
  14 extern char *strchr(const char *s, int c);
  15 extern int fprintf(FILE *, const char *format, ...);
  16 static void getrevpairs (char*);
  17 static int branchflag;
  18 static struct Revpairs *revlist, *Revlst;
  19
  20 extern int warn(const char *msg, char *argv);
  21 extern int error(const char *msg, int c, char *argv);
  22 extern int recentdate(void *foo, void *bar);
  23
  24 char *t;
  25 int main (int argc, char **argv)
  26 {
  27     FILE *out;
  28     char *a, **newargv;
  29     void *currdate;
  30     int descflag, selectflag;
  31     int onlylockflag;
  32     int onlyRCSflag;
  33     int shownames;
  34     descflag = selectflag = shownames = 1;
  35     onlylockflag = onlyRCSflag = 0;
  36     while (a = *++argv, 0<--argc)
  37     {
  38         switch (*a++)
  39         {
  40             case 'L':
  41                 onlylockflag = 1;
  42             case 'N':
  43                 shownames = 0;
  44             case 'R':
  45                 t = a;
  46             case 'b':
  47                 branchflag = 1;
  48             case 'r':
  49                 getrevpairs(a);
  50         }
  51         if (onlylockflag && !Locks)
  52             fprintf(out, "%s\n", RCSname);
  53         if (shownames)
  54             while( currdate)
  55                 recentdate(Head, currdate);
  56     }
  57 }
  58 void getrevpairs(char *argv)
  59 {
  60     char c;
  61     struct Revpairs * nextrevpair;
  62     int separator;
  63     if (strchr(argv,':'))
  64         separator = ':';
  65     else
  66     {
  67         if (strchr(argv,'-') )
  68             warn("`-' is obsolete in `-r%s'; use `:' instead", argv);
  69         separator = '-';
  70     }
  71     for (;;)
  72     {
  73         nextrevpair->rnext = revlist;
  74         for (;; c = *++argv)
  75         {
  76             switch (c)
  77             {
  78                 default:
  79                     continue;
  80                 case ' ':
  81                 case '\t':
  82                 case '\n':
  83                     break;
  84                 case ':':
  85                 case '-':
  86                     if (c == separator)
  87                         continue;
  88             }
  89             break;
  90         }
  91         if (!c)
  92             break;
  93         error("missing `,' near `%c%s'", c, argv+1);
  94     }
  95 }
  96
  97 int warn(const char *msg, char *argv)
  98 {
  99   t = 0;  /* this function needs side-effects.  */
 100   return 0;
 101 }
 102
 103 int error(const char *msg, int c, char *argv)
 104 {
 105   t = 0; /* this function needs side-effects.  */
 106   return 0;
 107 }
 108
 109 int recentdate(void *foo, void *bar)
 110 {
 111   t = 0; /* this function needs side-effects.  */
 112   return 0;
 113 }
 114