X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=pp_hot.c;h=904ee9f8781a62c985157273eb408c8454262bea;hb=cc50ac46d6f5968c34044ce7c501b06af15fc51a;hp=7be8607b7a5de20622558832506919847691dd6f;hpb=427181846486e3aa5034a647dc1922377185f4c0;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/pp_hot.c b/pp_hot.c
index 7be8607..904ee9f 100644
--- a/pp_hot.c
+++ b/pp_hot.c
@@ -164,8 +164,21 @@ PP(pp_concat)
 	s = SvPV_force(TARG, len);
     }
     s = SvPV(right,len);
-    if (SvOK(TARG))
+    if (SvOK(TARG)) {
+#if defined(PERL_Y2KWARN)
+	if ((SvIOK(right) || SvNOK(right)) && ckWARN(WARN_MISC)) {
+	    STRLEN n;
+	    char *s = SvPV(TARG,n);
+	    if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
+		&& (n == 2 || !isDIGIT(s[n-3])))
+	    {
+		Perl_warner(aTHX_ WARN_MISC, "Possible Y2K bug: %s",
+			    "about to append an integer to '19'");
+	    }
+	}
+#endif
 	sv_catpvn(TARG,s,len);
+    }
     else
 	sv_setpvn(TARG,s,len);	/* suppress warning */
     SETTARG;
@@ -221,7 +234,7 @@ PP(pp_preinc)
 {
     djSP;
     if (SvREADONLY(TOPs) || SvTYPE(TOPs) > SVt_PVLV)
-	Perl_croak(aTHX_ PL_no_modify);
+	DIE(aTHX_ PL_no_modify);
     if (SvIOK_notUV(TOPs) && !SvNOK(TOPs) && !SvPOK(TOPs) &&
     	SvIVX(TOPs) != IV_MAX)
     {
@@ -1632,7 +1645,7 @@ PP(pp_subst)
     if (SvREADONLY(TARG)
 	|| (SvTYPE(TARG) > SVt_PVLV
 	    && !(SvTYPE(TARG) == SVt_PVGV && SvFAKE(TARG))))
-	Perl_croak(aTHX_ PL_no_modify);
+	DIE(aTHX_ PL_no_modify);
     PUTBACK;
 
     s = SvPV(TARG, len);
@@ -2001,36 +2014,49 @@ PP(pp_leavesublv)
 	/* Here we go for robustness, not for speed, so we change all
 	 * the refcounts so the caller gets a live guy. Cannot set
 	 * TEMP, so sv_2mortal is out of question. */
-	if (!CvLVALUE(cxsub.cv))
-	    Perl_croak(aTHX_ "Can't modify non-lvalue subroutine call");
+	if (!CvLVALUE(cxsub.cv)) {
+	    POPSUB2();
+	    PL_curpm = newpm;
+	    DIE(aTHX_ "Can't modify non-lvalue subroutine call");
+	}
 	if (gimme == G_SCALAR) {
 	    MARK = newsp + 1;
 	    EXTEND_MORTAL(1);
 	    if (MARK == SP) {
-		if (SvFLAGS(TOPs) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY))
-		    Perl_croak(aTHX_ "Can't return a %s from lvalue subroutine",
+		if (SvFLAGS(TOPs) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) {
+		    POPSUB2();
+		    PL_curpm = newpm;
+		    DIE(aTHX_ "Can't return a %s from lvalue subroutine",
 			SvREADONLY(TOPs) ? "readonly value" : "temporary");
+		}
 		else {                  /* Can be a localized value
 					 * subject to deletion. */
 		    PL_tmps_stack[++PL_tmps_ix] = *mark;
 		    SvREFCNT_inc(*mark);
 		}
 	    }
-	    else                        /* Should not happen? */
-		Perl_croak(aTHX_ "%s returned from lvalue subroutine in scalar context",
+	    else {			/* Should not happen? */
+		POPSUB2();
+		PL_curpm = newpm;
+		DIE(aTHX_ "%s returned from lvalue subroutine in scalar context",
 		    (MARK > SP ? "Empty array" : "Array"));
+	    }
 	    SP = MARK;
 	}
 	else if (gimme == G_ARRAY) {
 	    EXTEND_MORTAL(SP - newsp);
 	    for (mark = newsp + 1; mark <= SP; mark++) {
-		if (SvFLAGS(*mark) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY))
-		/* Might be flattened array after $#array =  */
-		Perl_croak(aTHX_ "Can't return %s from lvalue subroutine",
+		if (SvFLAGS(*mark) & (SVs_TEMP | SVs_PADTMP | SVf_READONLY)) {
+		    /* Might be flattened array after $#array =  */
+		    PUTBACK;
+		    POPSUB2();
+		    PL_curpm = newpm;
+		    DIE(aTHX_ "Can't return %s from lvalue subroutine",
 			(*mark != &PL_sv_undef)
 			? (SvREADONLY(TOPs)
 			    ? "a readonly value" : "a temporary")
 			: "an uninitialized value");
+		}
 		else {
 		    mortalize:
 		    /* Can be a localized value subject to deletion. */
@@ -2112,7 +2138,7 @@ S_get_db_sub(pTHX_ SV **svp, CV *cv)
 	SvUPGRADE(dbsv, SVt_PVIV);
 	SvIOK_on(dbsv);
 	SAVEIV(SvIVX(dbsv));
-	SvIVX(dbsv) = (IV)PTR_CAST cv;	/* Do it the quickest way  */
+	SvIVX(dbsv) = PTR2IV(cv);	/* Do it the quickest way  */
     }
 
     if (CvXSUB(cv))
@@ -2245,7 +2271,7 @@ try_autoload:
 		    || !(sv = AvARRAY(av)[0]))
 		{
 		    MUTEX_UNLOCK(CvMUTEXP(cv));
-		    Perl_croak(aTHX_ "no argument for locked method call");
+		    DIE(aTHX_ "no argument for locked method call");
 		}
 	    }
 	    if (SvROK(sv))
@@ -2509,10 +2535,7 @@ try_autoload:
 	    			  "%p entersub preparing @_\n", thr));
 #endif
 	    av = (AV*)PL_curpad[0];
-	    if (AvREAL(av)) {
-		av_clear(av);
-		AvREAL_off(av);
-	    }
+	    assert(!AvREAL(av));
 #ifndef USE_THREADS
 	    cx->blk_sub.savearray = GvAV(PL_defgv);
 	    GvAV(PL_defgv) = (AV*)SvREFCNT_inc(av);