full API for cop hint hashes

Expose cop hint hashes as a type COPHH, with a cophh_* API which is a
macro layer over the refcounted_he_* API.  The documentation for cophh_*
describes purely API-visible behaviour, whereas the refcounted_he_*
documentation describes the functions mainly in terms of the
implementation.  Revise the cop_hints_* API, using the flags parameter
consistently and reimplementing in terms of cophh_*.  Use the cophh_*
and cop_hints_* functions consistently where appropriate.

[Modified by the committer to update two calls to
Perl_refcounted_he_fetch recently added to newPMOP.]

1 files changed, 1 insertions, 2 deletions

diff --git a/perlio.c b/perlio.c
index 547f0b44b2..1440048723 100644
--- a/perlio.c
+++ b/perlio.c
@@ -5232,8 +5232,7 @@ Perl_PerlIO_context_layers(pTHX_ const char *mode)
     if (!direction)
 	return NULL;
 
-    layers = Perl_refcounted_he_fetch(aTHX_ PL_curcop->cop_hints_hash,
-				      0, direction, 5, 0, 0);
+    layers = cop_hints_fetch_pvn(PL_curcop, direction, 5, 0, 0);
 
     assert(layers);
     return SvOK(layers) ? SvPV_nolen_const(layers) : NULL;