Hi, when using MALLOC_OPTIONS=GJPRZ on DragonFly which enables malloc debugging I get a crash when hitting Ctrl+r to reload a page with entered text in a textarea if the focus is still in the textarea. It seems that the Ctrl+r causes a callback on the already deleted fltk Input widget: Program received signal SIGBUS, Bus error. 0x0805310d in fltk::Widget::do_callback (this=0x284f5600) at /home/hofmann/soft//include/fltk/Widget.h:127 127 voiddo_callback()when{ callback_(this,user_data_); } (gdb) bt #0 0x0805310d in fltk::Widget::do_callback (this=0x284f5600) at /home/hofmann/soft//include/fltk/Widget.h:127 #1 0x080b75e3 in changed_stuff (i=0x28471480) at Input.cxx:49 #2 0x080b85dc in fltk::Input::replace (this=0x28471480, b=0, e=0, text=0x2856d280 "http://www.shiningsilence.com/dbsdlog/2008/10/01/3185.html#respond", ilen=66) at Input.cxx:826 #3 0x080bc4d8 in fltk::Input::insert (this=0x28471480, t=0x2856d280 "http://www.shiningsilence.com/dbsdlog/2008/10/01/3185.html#respond", l=66) at ../fltk/Input.h:86 #4 0x080b78f1 in fltk::Input::insert (this=0x28471480, text=0x2856d280 "http://www.shiningsilence.com/dbsdlog/2008/10/01/3185.html#respond") at Input.cxx:852 #5 0x08057aee in a_Web_dispatch_by_type (Type=0x2856f260 "text/html; charset=UTF-8", Web=0x2855a980, Call=0x2855a9d0, Data=0x2855a9d4) at web.cc:95 #6 0x08059b25 in Cache_process_queue (entry=0x285010c0) at cache.c:1050 On Linux export MALLOC_CHECK_=2 or valgrind should show similar results. Cheers, Johannes
On Thu, Oct 02, 2008 at 05:38:18PM +0200, Johannes Hofmann wrote:
Hi,
when using MALLOC_OPTIONS=GJPRZ on DragonFly which enables malloc debugging I get a crash when hitting Ctrl+r to reload a page with entered text in a textarea if the focus is still in the textarea. It seems that the Ctrl+r causes a callback on the already deleted fltk Input widget:
There seems to be a bug in FLTK2's Input::replace(), called by Input::insert(). The attached workaround solves it for me. Please check. -- Cheers Jorge.-
On Thu, Oct 02, 2008 at 12:51:16PM -0400, Jorge Arellano Cid wrote:
On Thu, Oct 02, 2008 at 05:38:18PM +0200, Johannes Hofmann wrote:
Hi,
when using MALLOC_OPTIONS=GJPRZ on DragonFly which enables malloc debugging I get a crash when hitting Ctrl+r to reload a page with entered text in a textarea if the focus is still in the textarea. It seems that the Ctrl+r causes a callback on the already deleted fltk Input widget:
There seems to be a bug in FLTK2's Input::replace(), called by Input::insert().
The attached workaround solves it for me. Please check.
No, that doesn't help. Perhaps I wasn't clear about the textarea thing. I meant something like: <html> <body> <form> <textarea></textarea> </form> </body> </html> On that page if I enter something, keep the focus in the textarea widget, hit Ctrl-r and then click somewhere I get the crash. Cheers, Johannes
participants (2)
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jcid＠dillo.org -
Johannes.Hofmann＠gmx.de