Patch for Perlbug #4253

[p5sagit/p5-mst-13.2.git] / sv.h

diff --git a/sv.h b/sv.h
index e80c755..9fe3657 100644 (file)
--- a/sv.h
+++ b/sv.h
@@ -188,6 +188,7 @@ perform the upgrade if necessary.  See C<svtype>.
 #define SVp_SCREAM     0x08000000      /* has been studied? */
 
 #define SVf_UTF8        0x20000000      /* SvPV is UTF-8 encoded */
+/* Ensure this value does not clash with the GV_ADD* flags in gv.h */
 
 #define SVf_THINKFIRST (SVf_READONLY|SVf_ROK|SVf_FAKE)
 
@@ -606,6 +607,8 @@ and leaves the UTF-8 status as it was.
 =cut
  */
 
+/* Ensure the return value of this macro does not clash with the GV_ADD* flags
+in gv.h: */
 #define SvUTF8(sv)             (SvFLAGS(sv) & SVf_UTF8)
 #define SvUTF8_on(sv)          (SvFLAGS(sv) |= (SVf_UTF8))
 #define SvUTF8_off(sv)         (SvFLAGS(sv) &= ~(SVf_UTF8))