hello monks,

i recently wondered why some of my utf8 strings missed their utf8 flag. i found the point where they were used as arguments to Digest::MD5::md5_hex. 

$ perl -wle'
use Digest::MD5 qw(md5_hex);
use Devel::Peek;
use Encode;

my $string = "äöü";
Encode::_utf8_on($string);
Dump $string;
my $md5 = md5_hex($string);
Dump $string
'
SV = PV(0x8153b00) at 0x8153684
  REFCNT = 1
  FLAGS = (PADBUSY,PADMY,POK,pPOK,UTF8)
  PV = 0x8174d48 "\303\244\303\266\303\274"\0 [UTF8 "\x{e4}\x{f6}\x{fc
+}"]
  CUR = 6
  LEN = 8
SV = PVMG(0x81ee3e0) at 0x8153684
  REFCNT = 1
  FLAGS = (PADBUSY,PADMY,SMG,POK,pPOK)
  IV = 0
  NV = 0
  PV = 0x8174d48 "\344\366\374"\0
  CUR = 3
  LEN = 8
  MAGIC = 0x81cbca0
    MG_VIRTUAL = &PL_vtbl_utf8
    MG_TYPE = PERL_MAGIC_utf8(w)
    MG_LEN = 3

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shouldn't the function leave its arguments alone?

In reply to md5_hex changes its argument by tinita

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