[perl #122445] use magic on $DB::single etc to avoid overload issues

[perl5.git] / pod / perlguts.pod

diff --git a/pod/perlguts.pod b/pod/perlguts.pod
index bcd2672..b70ead0 100644 (file)
--- a/pod/perlguts.pod
+++ b/pod/perlguts.pod
@@ -1169,6 +1169,8 @@ will be lost.
  %  PERL_MAGIC_rhash          (none)         extra data for restricted
                                              hashes
  &  PERL_MAGIC_proto          (none)         my sub prototype CV
+ *  PERL_MAGIC_debugvar       vtbl_debugvar  $DB::single, signal, trace
+                                             vars
  .  PERL_MAGIC_pos            vtbl_pos       pos() lvalue
  :  PERL_MAGIC_symtab         (none)         extra data for symbol
                                              tables
@@ -2641,6 +2643,9 @@ For example:
 
 The IVdf will expand to whatever is the correct format for the IVs.
 
+Note that there are different "long doubles": Perl will use
+whatever the compiler has.
+
 If you are printing addresses of pointers, use UVxf combined
 with PTR2UV(), do not use %lx or %p.