🚀 go-pugleaf

The program below when compiled with the command:

gcc -o foo -O foo.c

generates the following output on a Sun/Sparc with SunOS 4.1.1
(I am using GCC 2.1)

8941 837 1013
1903521977 768 1013
1903521766 557 1013
1886547925 544 1013

When compiled without the -O option, it generates the correct output:

1903521977 768 1013
1903521977 768 1013
1903521766 557 1013
1886547925 544 1013


Brian Donnell
NASA/JSC

File foo.c contents:

#include <stdio.h>

void main(void);
static int HashSymbol(char *,int);

void main()
  {
   HashSymbol("quoxnar",1013);
   HashSymbol("quoxnar",1013);
   HashSymbol("progn",1013);
   HashSymbol("progn",1013);
  }

static int HashSymbol(word,range)
  char *word;
  int range;
  {
   register int k,j,i;
   register int length;
   int tally;
   unsigned long count = 0L,tmpLong;
   char *tmpPtr;

   tmpPtr = (char *) &tmpLong;
   for (length = 0; word[length]; length++);
   length = length / sizeof(unsigned long);

   for (i = 0 , j = 0 ; i < length; i++)
     {
      for (k = 0 ; k < sizeof(unsigned long) ; k++ , j++)
        tmpPtr[k] = word[j];
      count += tmpLong;
     }
   for (word = (char *) &word[j]; *word; word++) count += (unsigned long) *word;
   tally = (int) (count % range);
printf("%lu %d %d\n",count,tally,range);
   if (tally < 0) return(-tally);
   return(tally);
  }