Guard against accidental long long use.

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

diff --git a/pp_ctl.c b/pp_ctl.c
index 972c21d..7b4cbfe 100644 (file)
--- a/pp_ctl.c
+++ b/pp_ctl.c
@@ -302,8 +302,13 @@ PP(pp_formline)
     bool item_is_utf = FALSE;
 
     if (!SvMAGICAL(tmpForm) || !SvCOMPILED(tmpForm)) {
-       SvREADONLY_off(tmpForm);
-       doparseform(tmpForm);
+       if (SvREADONLY(tmpForm)) {
+           SvREADONLY_off(tmpForm);
+           doparseform(tmpForm);
+           SvREADONLY_on(tmpForm);
+       }
+       else
+           doparseform(tmpForm);
     }
 
     SvPV_force(PL_formtarget, len);