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--- a/DES.xs 2005-12-08 15:52:50.000000000 +0000
+++ b/DES.xs 2013-03-13 15:02:29.000000000 +0000
@@ -64,8 +64,7 @@
output = sv_newmortal();
output_len = 8;
- if (!SvUPGRADE(output, SVt_PV))
- croak("cannot use output argument as lvalue");
+ (void) SvUPGRADE(output, SVt_PV);
perl_des_crypt(input, SvGROW(output, output_len), (i32 *)ks, enc_flag);
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