Memset fails on Solaris

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# 1  
Memset fails on Solaris


memset call is failing on solaris for me. I wrote below code and that also fails. Any hints?

 void *memset(void *dst, int c, size_t n)
     if (n) {
         char *d = dst;

         do {
             *d++ = c;
         } while (--n);
     return dst;

# 2  
Might go haywire if called with n loaded from negative integer ( -1 = 0xFFFFFFFF )?
void *memset( void *dst, int c, size_t n ){
    char *d = dst;
    while ( n ) {
         --n ;
         *d  =  c  ;
         d++ ;
     return dst;

# 3  
"Fails" is hardly specific enough for anyone to address what's wrong.

How does it fail?
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