diff --unified --recursive a/perl5.18/lib/perl/5.18/CORE/pad.h b/perl5.18/lib/perl/5.18/CORE/pad.h
--- a/perl5.18/lib/perl/5.18/CORE/pad.h	2020-08-10 09:58:43.970483379 +0300
+++ b/perl5.18/lib/perl/5.18/CORE/pad.h	2020-08-10 10:00:56.850097798 +0300
@@ -320,7 +320,7 @@
 	PL_comppad = (PAD*) (PadlistARRAY(padlist)[nth]);	\
 	PL_curpad = AvARRAY(PL_comppad);			\
 	DEBUG_Xv(PerlIO_printf(Perl_debug_log,			\
-	      "Pad 0x%"UVxf"[0x%"UVxf"] set_cur    depth=%d\n",	\
+	      "Pad 0x%" UVxf "[0x%" UVxf "] set_cur    depth=%d\n",	\
 	      PTR2UV(PL_comppad), PTR2UV(PL_curpad), (int)(nth)));
 
 
@@ -338,7 +338,7 @@
 	PL_comppad = (npad);					\
 	PL_curpad =  PL_comppad ? AvARRAY(PL_comppad) : NULL;	\
 	DEBUG_Xv(PerlIO_printf(Perl_debug_log,			\
-	      "Pad 0x%"UVxf"[0x%"UVxf"] save_local\n",		\
+	      "Pad 0x%" UVxf "[0x%" UVxf "] save_local\n",		\
 	      PTR2UV(PL_comppad), PTR2UV(PL_curpad)));
 
 #define PAD_RESTORE_LOCAL(opad) \
@@ -346,7 +346,7 @@
 	PL_comppad = opad;						\
 	PL_curpad =  PL_comppad ? AvARRAY(PL_comppad) : NULL;	\
 	DEBUG_Xv(PerlIO_printf(Perl_debug_log,			\
-	      "Pad 0x%"UVxf"[0x%"UVxf"] restore_local\n",	\
+	      "Pad 0x%" UVxf "[0x%" UVxf "] restore_local\n",	\
 	      PTR2UV(PL_comppad), PTR2UV(PL_curpad)));
 
 
diff --unified --recursive a/perl5.18/lib/perl/5.18/CORE/perl.h b/perl5.18/lib/perl/5.18/CORE/perl.h
--- a/perl5.18/lib/perl/5.18/CORE/perl.h	2020-08-10 09:58:43.966483390 +0300
+++ b/perl5.18/lib/perl/5.18/CORE/perl.h	2020-08-10 10:01:44.649957846 +0300
@@ -4254,7 +4254,7 @@
 EXTCONST char PL_warn_uninit[]
   INIT("Use of uninitialized value%s%s%s");
 EXTCONST char PL_warn_uninit_sv[]
-  INIT("Use of uninitialized value%"SVf"%s%s");
+  INIT("Use of uninitialized value%" SVf "%s%s");
 EXTCONST char PL_warn_nosemi[]
   INIT("Semicolon seems to be missing");
 EXTCONST char PL_warn_reserved[]
@@ -4274,7 +4274,7 @@
 EXTCONST char PL_no_aelem[]
   INIT("Modification of non-creatable array value attempted, subscript %d");
 EXTCONST char PL_no_helem_sv[]
-  INIT("Modification of non-creatable hash value attempted, subscript \"%"SVf"\"");
+  INIT("Modification of non-creatable hash value attempted, subscript \"%" SVf "\"");
 EXTCONST char PL_no_modify[]
   INIT("Modification of a read-only value attempted");
 EXTCONST char PL_no_mem[sizeof("Out of memory!\n")]