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-rw-r--r--perlio.h8
1 files changed, 4 insertions, 4 deletions
diff --git a/perlio.h b/perlio.h
index 51b9a83719..49423aa983 100644
--- a/perlio.h
+++ b/perlio.h
@@ -80,10 +80,10 @@ typedef PerlIOl *PerlIO;
#define PerlIO PerlIO
#define PERLIO_LAYERS 1
-extern void PerlIO_define_layer (PerlIO_funcs *tab);
-extern SV * PerlIO_find_layer (const char *name, STRLEN len);
-extern PerlIO * PerlIO_push (PerlIO *f,PerlIO_funcs *tab,const char *mode,const char *arg,STRLEN len);
-extern void PerlIO_pop (PerlIO *f);
+extern void PerlIO_define_layer (pTHX_ PerlIO_funcs *tab);
+extern SV * PerlIO_find_layer (pTHX_ const char *name, STRLEN len);
+extern PerlIO * PerlIO_push (pTHX_ PerlIO *f,PerlIO_funcs *tab,const char *mode,const char *arg,STRLEN len);
+extern void PerlIO_pop (pTHX_ PerlIO *f);
#endif /* PerlIO */