Doc fix. Thanks to Bram.

[perl5.git] / pod / perlxs.pod

diff --git a/pod/perlxs.pod b/pod/perlxs.pod
index c367f4c..5f773bb 100644 (file)
--- a/pod/perlxs.pod
+++ b/pod/perlxs.pod
@@ -319,7 +319,7 @@ CPAN modules) in the typemap file, the reference count of the C<AV *>
 is not properly decremented. Thus, the above XSUB would leak memory
 whenever it is being called. The same problem exists for C<HV *>.
 
-When you're returning an C<AV *> or a C<HV *>, you have make sure
+When you're returning an C<AV *> or a C<HV *>, you have to make sure
 their reference count is decremented by making the AV or HV mortal:
 
   AV *
@@ -1211,6 +1211,12 @@ To disable version checking:
 
     VERSIONCHECK: DISABLE
 
+Note that if the version of the PM module is an NV (a floating point
+number), it will be stringified with a possible loss of precision
+(currently chopping to nine decimal places) so that it may not match
+the version of the XS module anymore. Quoting the $VERSION declaration
+to make it a string is recommended if long version numbers are used.
+
 =head2 The PROTOTYPES: Keyword
 
 The PROTOTYPES: keyword corresponds to B<xsubpp>'s C<-prototypes> and
@@ -1939,7 +1945,7 @@ and the module version number.
 
 =item typedef my_cxt_t
 
-This struct typedef I<must> always be called C<my_cxt_t> -- the other
+This struct typedef I<must> always be called C<my_cxt_t>. The other
 C<CXT*> macros assume the existence of the C<my_cxt_t> typedef name.
 
 Declare a typedef named C<my_cxt_t> that is a structure that contains
@@ -1958,7 +1964,7 @@ of C<my_cxt_t>.
 
 The MY_CXT_INIT macro initialises storage for the C<my_cxt_t> struct.
 
-It I<must> be called exactly once -- typically in a BOOT: section. If you
+It I<must> be called exactly once, typically in a BOOT: section. If you
 are maintaining multiple interpreters, it should be called once in each
 interpreter instance, except for interpreters cloned from existing ones.
 (But see C<MY_CXT_CLONE> below.)