X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=sv.h;h=c0ce96783d712aa675026fc58fc9356d363f44dc;hb=976cc4b324252da88ff069ecdaa817a11ac6364f;hp=e5832040f8401e43b35175b15d13d89f30438e1c;hpb=3818b22bb9ef820a2553aa5e3504220f3b156f21;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/sv.h b/sv.h
index e583204..c0ce967 100644
--- a/sv.h
+++ b/sv.h
@@ -511,19 +511,19 @@ Set the length of the string which is in the SV.  See C<SvCUR>.
 
 #define SvOKp(sv)		(SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK))
 #define SvIOKp(sv)		(SvFLAGS(sv) & SVp_IOK)
-#define SvIOKp_on(sv)		(SvOOK_off(sv), SvFLAGS(sv) |= SVp_IOK)
+#define SvIOKp_on(sv)		((void)SvOOK_off(sv), SvFLAGS(sv) |= SVp_IOK)
 #define SvNOKp(sv)		(SvFLAGS(sv) & SVp_NOK)
 #define SvNOKp_on(sv)		(SvFLAGS(sv) |= SVp_NOK)
 #define SvPOKp(sv)		(SvFLAGS(sv) & SVp_POK)
 #define SvPOKp_on(sv)		(SvFLAGS(sv) |= SVp_POK)
 
 #define SvIOK(sv)		(SvFLAGS(sv) & SVf_IOK)
-#define SvIOK_on(sv)		(SvOOK_off(sv), \
+#define SvIOK_on(sv)		((void)SvOOK_off(sv), \
 				    SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
 #define SvIOK_off(sv)		(SvFLAGS(sv) &= ~(SVf_IOK|SVp_IOK|SVf_IVisUV))
-#define SvIOK_only(sv)		(SvOK_off(sv), \
+#define SvIOK_only(sv)		((void)SvOK_off(sv), \
 				    SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
-#define SvIOK_only_UV(sv)	(SvOK_off_exc_UV(sv), \
+#define SvIOK_only_UV(sv)	((void)SvOK_off_exc_UV(sv), \
 				    SvFLAGS(sv) |= (SVf_IOK|SVp_IOK))
 
 #define SvIOK_UV(sv)		((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV))	\
@@ -538,7 +538,7 @@ Set the length of the string which is in the SV.  See C<SvCUR>.
 #define SvNOK(sv)		(SvFLAGS(sv) & SVf_NOK)
 #define SvNOK_on(sv)		(SvFLAGS(sv) |= (SVf_NOK|SVp_NOK))
 #define SvNOK_off(sv)		(SvFLAGS(sv) &= ~(SVf_NOK|SVp_NOK))
-#define SvNOK_only(sv)		(SvOK_off(sv), \
+#define SvNOK_only(sv)		((void)SvOK_off(sv), \
 				    SvFLAGS(sv) |= (SVf_NOK|SVp_NOK))
 
 #define SvUTF8(sv)		(SvFLAGS(sv) & SVf_UTF8)
@@ -556,7 +556,7 @@ Set the length of the string which is in the SV.  See C<SvCUR>.
 				    SvFLAGS(sv) |= (SVf_POK|SVp_POK))
 
 #define SvOOK(sv)		(SvFLAGS(sv) & SVf_OOK)
-#define SvOOK_on(sv)		(SvIOK_off(sv), SvFLAGS(sv) |= SVf_OOK)
+#define SvOOK_on(sv)		((void)SvIOK_off(sv), SvFLAGS(sv) |= SVf_OOK)
 #define SvOOK_off(sv)		(SvOOK(sv) && sv_backoff(sv))
 
 #define SvFAKE(sv)		(SvFLAGS(sv) & SVf_FAKE)
@@ -709,6 +709,19 @@ Set the length of the string which is in the SV.  See C<SvCUR>.
 #define IoFLAGS(sv)	((XPVIO*)  SvANY(sv))->xio_flags
 
 /*
+IoTYPE(sv) is a single character saying what type of I/O connection
+this is:
+    |        pipe
+    -        stdin or stdout
+    <        read-only
+    >        write-only
+    a        append
+    +        read and write
+    s        socket
+    space    closed
+*/
+
+/*
 =for apidoc Am|bool|SvTAINTED|SV* sv
 Checks to see if an SV is tainted. Returns TRUE if it is, FALSE if
 not.