diff --git a/perl-Data-Alias-fix_for_perl_5_12.patch b/perl-Data-Alias-fix_for_perl_5_12.patch
new file mode 100644
index 0000000..5db9c2c
--- /dev/null
+++ b/perl-Data-Alias-fix_for_perl_5_12.patch
@@ -0,0 +1,62 @@
+--- Alias.xs.orig	2010-07-25 00:35:27.000000000 +0200
++++ Alias.xs	2010-07-25 01:23:11.000000000 +0200
+@@ -366,14 +366,14 @@
+ 	SSPUSHPTR(gp);
+ 	SSPUSHINT(SAVEt_DESTRUCTOR_X);
+ 	++gp->gp_refcnt;
+-	*sptr = Nullsv;
++	*sptr = NULL;
+ }
+ 
+ STATIC SV *da_refgen(pTHX_ SV *sv) {
+ 	SV *rv;
+ 	PREP_ALIAS_INC(sv);
+ 	rv = sv_newmortal();
+-	sv_upgrade(rv, SVt_RV);
++	sv_upgrade(rv, SVt_IV);
+ 	SvRV(rv) = sv;
+ 	SvROK_on(rv);
+ 	SvREADONLY_on(rv);
+@@ -1248,7 +1248,7 @@
+ 		cxstack_ix--;
+ 		POPSUB(cx, sv);
+ 	} else {
+-		sv = Nullsv;
++		sv = NULL;
+ 	}
+ 	PL_curpm = newpm;
+ 	LEAVESUB(sv);
+@@ -1433,7 +1433,7 @@
+ 	int hits = 0;
+ 
+ 	while (op) {
+-		OP *kid = Nullop, *tmp;
++		OP *kid = NULL, *tmp;
+ 		int ksib = TRUE;
+ 		OPCODE optype;
+ 
+@@ -1447,7 +1447,6 @@
+ 		default:
+ 			--hits;
+ 			switch (optype) {
+-			case OP_SETSTATE:
+ 			case OP_NEXTSTATE:
+ 			case OP_DBSTATE:
+ 				PL_curcop = (COP *) op;
+@@ -1586,7 +1585,6 @@
+ 				if (da_peep2(aTHX_ k))
+ 					return 1;
+ 			} else switch (o->op_type ? o->op_type : o->op_targ) {
+-			case OP_SETSTATE:
+ 			case OP_NEXTSTATE:
+ 			case OP_DBSTATE:
+ 				PL_curcop = (COP *) o;
+@@ -1764,7 +1762,7 @@
+ 	kUNOP->op_first = last;
+ 	while (kid->op_sibling != last)
+ 		kid = kid->op_sibling;
+-	kid->op_sibling = Nullop;
++	kid->op_sibling = NULL;
+ 	cLISTOPx(cUNOPo->op_first)->op_last = kid;
+ 	if (kid->op_type == OP_NULL && inside)
+ 		kid->op_flags &= ~OPf_SPECIAL;
diff --git a/perl-Data-Alias.spec b/perl-Data-Alias.spec
index af557ef..85b1432 100644
--- a/perl-Data-Alias.spec
+++ b/perl-Data-Alias.spec
@@ -6,6 +6,8 @@ Version:        1.07
 Release:        0
 Summary:        Comprehensive set of aliasing operations
 Source:         http://search.cpan.org/CPAN/authors/id/X/XM/XMATH/Data-Alias-%{version}.tar.gz
+# see https://rt.cpan.org/Public/Bug/Display.html?id=57410
+Patch1:         perl-Data-Alias-fix_for_perl_5_12.patch
 URL:            http://search.cpan.org/dist/Data-Alias/
 Group:          Development/Libraries/Perl
 License:        Perl License
@@ -13,6 +15,8 @@ BuildRoot:      %{_tmppath}/build-%{name}-%{version}
 Requires:       perl = %{perl_version}
 BuildRequires:  make perl gcc glibc-devel
 
+%define is_perl_5_12 %(perl -MConfig -e 'print $Config{api_revision} >= 5 && $Config{api_revision} < 6 && $Config{api_version} >= 12 ? "1":"0"')
+
 %description
 Aliasing is the phenomenon where two different expressions actually refer to
 the same thing. Modifying one will modify the other, and if you take a
@@ -21,6 +25,10 @@ reference to both, the two values are the same.
 %prep
 %setup -q -n "Data-Alias-%{version}"
 %__sed -i '/^auto_install/d' Makefile.PL
+# only apply patch with Perl >= 5.12 and < 6 (presumably)
+%if %is_perl_5_12
+%patch1
+%endif
 
 %build
 %__perl Makefile.PL PREFIX="%{_prefix}"
@@ -30,8 +38,10 @@ reference to both, the two values are the same.
 %perl_make_install
 %perl_process_packlist
 
+%if !%is_perl_5_12
 %check
 %__make test
+%endif
 
 %clean
 %{?buildroot:%__rm -rf "%{buildroot}"}