perl 5.003_01: sv.c

perl 5.003_01: sv.c

Don't try stdio tricks under QNX
Mark deleted SV with "impossible" type
Use Safemalloc to allocate memory for SVs, since we'll use Safefree
  to deallocate it later
Use casts to reflect new GV type
Allow redirection of debug messages
Add shared hash key support
Tolerate dangling references in debugger during object destruction
Don't warn about unreferenced scalars spotted during sv_clean_all()
If we're not trying stdio tricks, at least give system calls some
  breathing room when we use the same line terminator they do (\n)
Add information to sv_dump() output