Re: Any problems with malloc functions?

[Owen Taylor <otaylor redhat com>]

Ken Stebbings <kens@ecg.csg.mot.com> writes:

> I just got glib/gtk+ 1.13 and I still have problems relating to memory
> management, but hopefully it will be easier to track them down now. 
> When I compiled and ran testgtk, it coredumps right away:
> 
> (gdb) bt
> #0  0xc009f60c in memorymap ()
> #1  0xc009d654 in free ()
> #2  0xc1e76910 in g_free (mem=0x40003540) at gmem.c:394
> #3  0xc238a7dc in gtk_label_set_text_internal (label=0x40026948, 
>     str=0x40027198 "Gtk+ v1.1.13", str_wc=0x40027158) at gtklabel.c:224
> #4  0xc238aaec in gtk_label_set_text (label=0x40026948, 
>     str=0x7b03af08 "Gtk+ v1.1.13") at gtklabel.c:262
> #5  0xc238a6ec in gtk_label_new (str=0x40026948 "@\002aČ") at
> gtklabel.c:213
> #6  0x25bb0 in create_main_window () at testgtk.c:8433
> #7  0x25fdc in main (argc=1, argv=0x7b03ab84) at testgtk.c:8505
> (gdb) 

OK, this looks promising. Could you try the follwing
patch and see if it fixes the problem?

                                        Owen

Index: ChangeLog
===================================================================
RCS file: /cvs/gnome/gtk+/ChangeLog,v
retrieving revision 1.933
diff -u -r1.933 ChangeLog
--- ChangeLog	1999/01/18 19:27:39	1.933
+++ ChangeLog	1999/01/18 20:43:00
@@ -1,3 +1,9 @@
+Mon Jan 18 15:46:14 1999  Owen Taylor  <otaylor@redhat.com>
+
+	* gtk/gtklabel.c (gtk_label_init): Initialize
+	label->label_wc. (We allocate labels from
+	a memchunk)
+
 Mon Jan 18 14:26:17 1999  Owen Taylor  <otaylor@redhat.com>
 
 	* docs/Changes-1.2.txt: Some editing, a little more
Index: gtk/gtklabel.c
===================================================================
RCS file: /cvs/gnome/gtk+/gtk/gtklabel.c,v
retrieving revision 1.42
diff -u -r1.42 gtklabel.c
--- gtklabel.c	1999/01/17 19:02:53	1.42
+++ gtklabel.c	1999/01/18 20:43:00
@@ -192,10 +192,13 @@
   GTK_WIDGET_SET_FLAGS (label, GTK_NO_WINDOW);
   
   label->label = NULL;
+  label->label_wc = NULL;
+  label->pattern = NULL;
+
   label->words = NULL;
+
   label->max_width = 0;
   label->jtype = GTK_JUSTIFY_CENTER;
-  label->pattern = NULL;
   label->wrap = FALSE;
   
   gtk_label_set_text (label, "");