utf8.c: Add info to commented-out -DU lines

This proved useful when I recently needed to use these for debugging

diff --git a/utf8.c b/utf8.c
index f6c147c..1596f87 100644 (file)
--- a/utf8.c
+++ b/utf8.c
@@ -3811,7 +3811,7 @@ Perl__swash_inversion_hash(pTHX_ SV* const swash)
                                        (U8*) SvPVX(*entryp),
                                        (U8*) SvPVX(*entryp) + SvCUR(*entryp),
                                        0)));
-                       /*DEBUG_U(PerlIO_printf(Perl_debug_log, "Adding %"UVXf" to list for %"UVXf"\n", valid_utf8_to_uvchr((U8*) SvPVX(*entryp), 0), u));*/
+                       /*DEBUG_U(PerlIO_printf(Perl_debug_log, "%s: %d: Adding %"UVXf" to list for %"UVXf"\n", __FILE__, __LINE__, valid_utf8_to_uvchr((U8*) SvPVX(*entryp), 0), u));*/
                    }
                }
            }
@@ -3884,14 +3884,14 @@ Perl__swash_inversion_hash(pTHX_ SV* const swash)
            /* Make sure there is a mapping to itself on the list */
            if (! found_key) {
                av_push(list, newSVuv(val));
-               /*DEBUG_U(PerlIO_printf(Perl_debug_log, "Adding %"UVXf" to list for %"UVXf"\n", val, val));*/
+               /*DEBUG_U(PerlIO_printf(Perl_debug_log, "%s: %d: Adding %"UVXf" to list for %"UVXf"\n", __FILE__, __LINE__, val, val));*/
            }
 
 
            /* Simply add the value to the list */
            if (! found_inverse) {
                av_push(list, newSVuv(inverse));
-               /*DEBUG_U(PerlIO_printf(Perl_debug_log, "Adding %"UVXf" to list for %"UVXf"\n", inverse, val));*/
+               /*DEBUG_U(PerlIO_printf(Perl_debug_log, "%s: %d: Adding %"UVXf" to list for %"UVXf"\n", __FILE__, __LINE__, inverse, val));*/
            }
 
            /* swatch_get() increments the value of val for each element in the