[perl #31111] Random made scripts crashing perl

fix 'formline undef' coredump

p4raw-id: //depot/perl@23251

diff --git a/pp_ctl.c b/pp_ctl.c
index f07d716..52603c2 100644 (file)
--- a/pp_ctl.c
+++ b/pp_ctl.c
@@ -379,7 +379,8 @@ PP(pp_formline)
     NV value;
     bool gotsome = FALSE;
     STRLEN len;
-    STRLEN fudge = SvCUR(tmpForm) * (IN_BYTES ? 1 : 3) + 1;
+    STRLEN fudge = SvPOK(tmpForm)
+                       ? (SvCUR(tmpForm) * (IN_BYTES ? 1 : 3) + 1) : 0;
     bool item_is_utf8 = FALSE;
     bool targ_is_utf8 = FALSE;
     SV * nsv = Nullsv;
@@ -387,6 +388,8 @@ PP(pp_formline)
     char *fmt;
     bool oneline;
 
+
+
     if (!SvMAGICAL(tmpForm) || !SvCOMPILED(tmpForm)) {
        if (SvREADONLY(tmpForm)) {
            SvREADONLY_off(tmpForm);

diff --git a/t/lib/warnings/9uninit b/t/lib/warnings/9uninit
index b8ff2fa..6f3b3b9 100644 (file)
--- a/t/lib/warnings/9uninit
+++ b/t/lib/warnings/9uninit
@@ -885,7 +885,8 @@ our ($g1);
 
 $v = sprintf $m1;
 $v = sprintf '%d%d%d%d', $m1, $m2, $g1, $g2;
-eval {formline $m1 };  undef $m1;
+my $m3;
+eval {formline $m3 };
 formline '@<<@<<@<<@<<', $m1, $m2, $g1, $g2;
 EXPECT
 Use of uninitialized value $m1 in sprintf at - line 5.