From: Perl 5 Porters <perl5-porters@africa.nicoh.com>
Date: Sun, 17 Mar 1996 09:52:33 +0000 (+0000)
Subject: Incorporate single-statement macros
X-Git-Url: https://perl5.git.perl.org/perl5.git/commitdiff_plain/80b92232e4d4ad8078e12cd15b5399299c7f9f9b

Incorporate single-statement macros
---

diff --git a/XSUB.h b/XSUB.h
index f8d3107..af452ea 100644
--- a/XSUB.h
+++ b/XSUB.h
@@ -26,19 +26,19 @@
 #define XST_mYES(i)   (ST(i) = &sv_yes  )
 #define XST_mUNDEF(i) (ST(i) = &sv_undef)
  
-#define XSRETURN_IV(v) do { XST_mIV(0,v);  XSRETURN(1); } while (0)
-#define XSRETURN_NV(v) do { XST_mNV(0,v);  XSRETURN(1); } while (0)
-#define XSRETURN_PV(v) do { XST_mPV(0,v);  XSRETURN(1); } while (0)
-#define XSRETURN_NO    do { XST_mNO(0);    XSRETURN(1); } while (0)
-#define XSRETURN_YES   do { XST_mYES(0);   XSRETURN(1); } while (0)
-#define XSRETURN_UNDEF do { XST_mUNDEF(0); XSRETURN(1); } while (0)
-#define XSRETURN_EMPTY do {                XSRETURN(0); } while (0)
+#define XSRETURN_IV(v) STMT_START { XST_mIV(0,v);  XSRETURN(1); } STMT_END
+#define XSRETURN_NV(v) STMT_START { XST_mNV(0,v);  XSRETURN(1); } STMT_END
+#define XSRETURN_PV(v) STMT_START { XST_mPV(0,v);  XSRETURN(1); } STMT_END
+#define XSRETURN_NO    STMT_START { XST_mNO(0);    XSRETURN(1); } STMT_END
+#define XSRETURN_YES   STMT_START { XST_mYES(0);   XSRETURN(1); } STMT_END
+#define XSRETURN_UNDEF STMT_START { XST_mUNDEF(0); XSRETURN(1); } STMT_END
+#define XSRETURN_EMPTY STMT_START {                XSRETURN(0); } STMT_END
 
 #define newXSproto(a,b,c,d)	sv_setpv((SV*)newXS(a,b,c), d)
 
 #ifdef XS_VERSION
 # define XS_VERSION_BOOTCHECK \
-    do {                                                                      \
+    STMT_START {                                                                      \
         char vn[255], *module = SvPV(ST(0),na);                               \
         if (items >= 2)         /* version supplied as bootstrap arg */       \
             Sv=ST(1);                                                         \
@@ -49,7 +49,7 @@
         if (Sv && (!SvOK(Sv) || strNE(XS_VERSION, SvPV(Sv,na))) )             \
             croak("%s object version %s does not match %s.pm $VERSION %s",    \
               module,XS_VERSION, module,(Sv && SvOK(Sv))?SvPV(Sv,na):"(undef)");\
-    } while (0)
+    } STMT_END
 #else
 # define XS_VERSION_BOOTCHECK
 #endif
diff --git a/sv.h b/sv.h
index 4e5592d..c586de4 100644
--- a/sv.h
+++ b/sv.h
@@ -424,23 +424,23 @@ struct xpvio {
 #define SvSTASH(sv)	((XPVMG*)  SvANY(sv))->xmg_stash
 
 #define SvIV_set(sv, val) \
-	do { assert(SvTYPE(sv) == SVt_IV || SvTYPE(sv) >= SVt_PVIV); \
-		(((XPVIV*)  SvANY(sv))->xiv_iv = val); } while (0)
+	STMT_START { assert(SvTYPE(sv) == SVt_IV || SvTYPE(sv) >= SVt_PVIV); \
+		(((XPVIV*)  SvANY(sv))->xiv_iv = val); } STMT_END
 #define SvNV_set(sv, val) \
-	do { assert(SvTYPE(sv) == SVt_NV || SvTYPE(sv) >= SVt_PVNV); \
-		(((XPVNV*)  SvANY(sv))->xnv_nv = val); } while (0)
+	STMT_START { assert(SvTYPE(sv) == SVt_NV || SvTYPE(sv) >= SVt_PVNV); \
+		(((XPVNV*)  SvANY(sv))->xnv_nv = val); } STMT_END
 #define SvPV_set(sv, val) \
-	do { assert(SvTYPE(sv) >= SVt_PV); \
-		(((XPV*)  SvANY(sv))->xpv_pv = val); } while (0)
+	STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
+		(((XPV*)  SvANY(sv))->xpv_pv = val); } STMT_END
 #define SvCUR_set(sv, val) \
-	do { assert(SvTYPE(sv) >= SVt_PV); \
-		(((XPV*)  SvANY(sv))->xpv_cur = val); } while (0)
+	STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
+		(((XPV*)  SvANY(sv))->xpv_cur = val); } STMT_END
 #define SvLEN_set(sv, val) \
-	do { assert(SvTYPE(sv) >= SVt_PV); \
-		(((XPV*)  SvANY(sv))->xpv_len = val); } while (0)
+	STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
+		(((XPV*)  SvANY(sv))->xpv_len = val); } STMT_END
 #define SvEND_set(sv, val) \
-	do { assert(SvTYPE(sv) >= SVt_PV); \
-		(((XPV*)  SvANY(sv))->xpv_cur = val - SvPVX(sv)); } while (0)
+	STMT_START { assert(SvTYPE(sv) >= SVt_PV); \
+		(((XPV*)  SvANY(sv))->xpv_cur = val - SvPVX(sv)); } STMT_END
 
 #define BmRARE(sv)	((XPVBM*)  SvANY(sv))->xbm_rare
 #define BmUSEFUL(sv)	((XPVBM*)  SvANY(sv))->xbm_useful