fixes for installperl and the vmsdebug build on VMS

[perl5.git] / sv.h

diff --git a/sv.h b/sv.h
index 219174f..42649be 100644 (file)
--- a/sv.h
+++ b/sv.h
@@ -1,6 +1,7 @@
 /*    sv.h
  *
- *    Copyright (c) 1991-2003, Larry Wall
+ *    Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ *    2000, 2001, 2002, 2003, by Larry Wall and others
  *
  *    You may distribute under the terms of either the GNU General Public
  *    License or the Artistic License, as specified in the README file.
@@ -273,7 +274,8 @@ struct xpvlv {
     STRLEN     xlv_targoff;
     STRLEN     xlv_targlen;
     SV*                xlv_targ;
-    char       xlv_type;
+    char       xlv_type;       /* k=keys .=pos x=substr v=vec /=join/re
+                                * y=alem/helem/iter t=tie T=tied HE */
 };
 
 struct xpvgv {
@@ -306,7 +308,7 @@ struct xpvbm {
     U8         xbm_rare;       /* rarest character in string */
 };
 
-/* This structure much match XPVCV in cv.h */
+/* This structure must match XPVCV in cv.h */
 
 typedef U16 cv_flags_t;
 
@@ -526,18 +528,18 @@ Set the length of the string which is in the SV.  See C<SvCUR>.
 #define SvNIOK_off(sv)         (SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK| \
                                                  SVp_IOK|SVp_NOK|SVf_IVisUV))
 
-#ifdef __GNUC__
-#define assert_not_ROK(sv)     ({assert(!SvROK(sv) || !SvRV(sv))})
+#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
+#define assert_not_ROK(sv)     ({assert(!SvROK(sv) || !SvRV(sv))}),
 #else
-#define assert_not_ROK(sv)     0
+#define assert_not_ROK(sv)     
 #endif
 
 #define SvOK(sv)               (SvFLAGS(sv) & SVf_OK)
-#define SvOK_off(sv)           (assert_not_ROK(sv),                    \
+#define SvOK_off(sv)           (assert_not_ROK(sv)                     \
                                 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC|    \
                                                  SVf_IVisUV|SVf_UTF8), \
                                                        SvOOK_off(sv))
-#define SvOK_off_exc_UV(sv)    (assert_not_ROK(sv),                    \
+#define SvOK_off_exc_UV(sv)    (assert_not_ROK(sv)                     \
                                 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC|    \
                                                  SVf_UTF8),            \
                                                        SvOOK_off(sv))
@@ -549,7 +551,7 @@ Set the length of the string which is in the SV.  See C<SvCUR>.
 #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)          (assert_not_ROK(sv),                    \
+#define SvPOKp_on(sv)          (assert_not_ROK(sv)                     \
                                 SvFLAGS(sv) |= SVp_POK)
 
 #define SvIOK(sv)              (SvFLAGS(sv) & SVf_IOK)
@@ -600,14 +602,14 @@ and leaves the UTF8 status as it was.
 #define SvUTF8_off(sv)         (SvFLAGS(sv) &= ~(SVf_UTF8))
 
 #define SvPOK(sv)              (SvFLAGS(sv) & SVf_POK)
-#define SvPOK_on(sv)           (assert_not_ROK(sv),                    \
+#define SvPOK_on(sv)           (assert_not_ROK(sv)                     \
                                 SvFLAGS(sv) |= (SVf_POK|SVp_POK))
 #define SvPOK_off(sv)          (SvFLAGS(sv) &= ~(SVf_POK|SVp_POK))
-#define SvPOK_only(sv)         (assert_not_ROK(sv),                    \
+#define SvPOK_only(sv)         (assert_not_ROK(sv)                     \
                                 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC|    \
                                                  SVf_IVisUV|SVf_UTF8), \
                                    SvFLAGS(sv) |= (SVf_POK|SVp_POK))
-#define SvPOK_only_UTF8(sv)    (assert_not_ROK(sv),                    \
+#define SvPOK_only_UTF8(sv)    (assert_not_ROK(sv)                     \
                                 SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC|    \
                                                  SVf_IVisUV),          \
                                    SvFLAGS(sv) |= (SVf_POK|SVp_POK))
@@ -920,6 +922,14 @@ Like C<SvPV>, but converts sv to byte representation first if necessary.
 Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte>
 otherwise.
 
+=for apidoc Am|bool|SvIsCOW|SV* sv
+Returns a boolean indicating whether the SV is Copy-On-Write. (either shared
+hash key scalars, or full Copy On Write scalars if 5.9.0 is configured for
+COW)
+
+=for apidoc Am|bool|SvIsCOW_shared_hash|SV* sv
+Returns a boolean indicating whether the SV is Copy-On-Write shared hash key
+scalar.
 
 =cut
 */
@@ -991,7 +1001,7 @@ otherwise.
 #define SvPVutf8x_force(sv, lp) sv_pvutf8n_force(sv, &lp)
 #define SvPVbytex_force(sv, lp) sv_pvbyten_force(sv, &lp)
 
-#if defined(__GNUC__) && !defined(__STRICT_ANSI__) && !defined(PERL_GCC_PEDANTIC)
+#if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN)
 
 #  define SvIVx(sv) ({SV *nsv = (SV*)(sv); SvIV(nsv); })
 #  define SvUVx(sv) ({SV *nsv = (SV*)(sv); SvUV(nsv); })
@@ -1217,7 +1227,7 @@ Returns a pointer to the character buffer.
 #define SvPEEK(sv) ""
 #endif
 
-#define SvIMMORTAL(sv) ((sv)==&PL_sv_undef || (sv)==&PL_sv_yes || (sv)==&PL_sv_no)
+#define SvIMMORTAL(sv) ((sv)==&PL_sv_undef || (sv)==&PL_sv_yes || (sv)==&PL_sv_no || (sv)==&PL_sv_placeholder)
 
 #define boolSV(b) ((b) ? &PL_sv_yes : &PL_sv_no)