expanded flock() docs

[p5sagit/p5-mst-13.2.git] / pp.c

diff --git a/pp.c b/pp.c
index b07a54b..d7725b8 100644 (file)
--- a/pp.c
+++ b/pp.c
@@ -248,8 +248,11 @@ PP(pp_rv2cv)
     /* We usually try to add a non-existent subroutine in case of AUTOLOAD. */
     /* (But not in defined().) */
     CV *cv = sv_2cv(TOPs, &stash, &gv, !(op->op_flags & OPf_SPECIAL));
-
-    if (!cv)
+    if (cv) {
+       if (CvCLONE(cv))
+           cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
+    }
+    else
        cv = (CV*)&sv_undef;
     SETs((SV*)cv);
     RETURN;
@@ -639,25 +642,24 @@ PP(pp_divide)
 {
     dSP; dATARGET; tryAMAGICbin(div,opASSIGN); 
     {
-      dPOPnv;
-      if (value == 0.0)
+      dPOPPOPnnrl;
+      double value;
+      if (right == 0.0)
        DIE("Illegal division by zero");
 #ifdef SLOPPYDIVIDE
       /* insure that 20./5. == 4. */
       {
-       double x;
-       I32    k;
-       x =  POPn;
-       if ((double)I_32(x)     == x &&
-           (double)I_32(value) == value &&
-           (k = I_32(x)/I_32(value))*I_32(value) == I_32(x)) {
+       IV k;
+       if ((double)I_V(left)  == left &&
+           (double)I_V(right) == right &&
+           (k = I_V(left)/I_V(right))*I_V(right) == I_V(left)) {
            value = k;
        } else {
-           value = x/value;
+           value = left / right;
        }
       }
 #else
-      value = POPn / value;
+      value = left / right;
 #endif
       PUSHn( value );
       RETURN;
@@ -729,14 +731,19 @@ PP(pp_repeat)
            if (SvROK(tmpstr))
                sv_unref(tmpstr);
        }
-       SvSetSV(TARG, tmpstr);
-       SvPV_force(TARG, len);
-       if (count >= 1) {
-           SvGROW(TARG, (count * len) + 1);
-           if (count > 1)
-               repeatcpy(SvPVX(TARG) + len, SvPVX(TARG), len, count - 1);
-           SvCUR(TARG) *= count;
-           *SvEND(TARG) = '\0';
+       if (USE_LEFT(tmpstr) || SvTYPE(tmpstr) > SVt_PVMG) {
+           SvSetSV(TARG, tmpstr);
+           SvPV_force(TARG, len);
+           if (count != 1) {
+               if (count < 1)
+                   SvCUR_set(TARG, 0);
+               else {
+                   SvGROW(TARG, (count * len) + 1);
+                   repeatcpy(SvPVX(TARG) + len, SvPVX(TARG), len, count - 1);
+                   SvCUR(TARG) *= count;
+               }
+               *SvEND(TARG) = '\0';
+           }
            (void)SvPOK_only(TARG);
        }
        else
@@ -751,7 +758,7 @@ PP(pp_subtract)
 {
     dSP; dATARGET; tryAMAGICbin(subtr,opASSIGN); 
     {
-      dPOPTOPnnrl;
+      dPOPTOPnnrl_ul;
       SETn( left - right );
       RETURN;
     }