X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=perlsfio.h;h=a736371a32a38e5efd6abf4222d3a0831feeae10;hb=c5b802edbc2f0c65267eeef77229d452ab090751;hp=d0f6471659ca577db5965fa138d320237fe6baa2;hpb=22d4bb9ccb8701e68f9243547d7e3a3c55f70908;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/perlsfio.h b/perlsfio.h
index d0f6471..a736371 100644
--- a/perlsfio.h
+++ b/perlsfio.h
@@ -52,10 +52,10 @@ extern int	_stdprintf _ARG_((const char*, ...));
 #define PerlIO_has_cntptr(f)		1       
 #define PerlIO_get_ptr(f)		((f)->next)
 #define PerlIO_get_cnt(f)		((f)->endr - (f)->next)
-#define PerlIO_canset_cnt(f)		1      
-#define PerlIO_fast_gets(f)		1        
-#define PerlIO_set_ptrcnt(f,p,c)	((f)->next = (unsigned char *)(p))          
-#define PerlIO_set_cnt(f,c)		1
+#define PerlIO_canset_cnt(f)		0
+#define PerlIO_fast_gets(f)		1
+#define PerlIO_set_ptrcnt(f,p,c)	STMT_START {(f)->next = (unsigned char *)(p); assert(FILE_cnt(f) == (c))} STMT_END
+#define PerlIO_set_cnt(f,c)		Perl_croak(aTHX_ "Cannot set 'cnt' of FILE * on this system");
 
 #define PerlIO_has_base(f)		1         
 #define PerlIO_get_base(f)		((f)->data)