schultz@mmm.UUCP (John C Schultz) (01/16/89)
Has anyone successfully compiled XGDB (version 3.0 downloaded from GDB sources
at osu-cis) using GCC 1.32? Everything compiles and links OK using X11R2 on a
SUN 3/60 under SunOS 3.5 but when I try to debug a file I get
X Toolkit Warning: No type converter registered for 'String' to 'EditMode' conversion
text does not appear in the XGDB window and the next GDB command causes a core
dump regardless of the command.
Before I get desperate and try to debug the core dump, has anyone
solved this problem already? Or is it a related to using X11R2 rather
than X11R3?
--
john c. schultz schultz@3M.Com ..!uiucuxc!mmm!schultz (612) 733-4047
3M Center, Bldg 518-1-1, St. Paul, MN 55144-1000
The opinions expressed herein are, as always, my own and not 3M's.bob@allosaur.cis.ohio-state.edu (Bob Sutterfield) (01/17/89)
In article <1218@mmm.UUCP> schultz@mmm.UUCP (John C Schultz) writes: >... [gdb3.0, gcc 1.32, SunOS3.5] ... >X Toolkit Warning: No type converter registered for 'String' to 'EditMode' conversion >...is it a related to using X11R2 rather than X11R3? No, because the same thing happens under R3. I haven't seen (nor found) a solution yet.
ken@richsun.UUCP (Ken Marks) (01/18/89)
I found out what was causing the "X Toolkit Warning: No type converter registered for 'String' to 'EditMode' conversion" message and what was causing the core dump (the two are unrelated). First, the core dump occurs when the pointer "fi" is dereferenced in about line 109 of xgdb.c. As far as I could tell xgdb_display_source() gets called before everything is set up. There is an earlier return that checks that containing_widget is non-NULL. In this spirit, I added a test for "fi" being NULL and likewise returned. The problem of the type converter comes from the type converter being used before it was registered (seems obvious). The function create_text_widget needs to create a text widget (which registers the type converter) before using the type converter to get up its args. The second chunk of diff fixes this. How this ever worked before is a mystery to me, but then again a lot of things are mysteries to me... I hope this helps get people going with xgdb. I personally do not use it since I feel that it is still a little rough around the edges in terms of user interface (i.e. It's still not up to the level of a dbxtool). The points where it could use some tweaking are 1) place output in a window within xgdb (an ansitool widget would be nice) 2) give some visual feedback in the source code window as to where breakpoints are set and where the program has stopped execution (a la dbxtool) 3) add an "expand selection" mechanism 4) add an option to NOT scroll the source code so that the current line is in the center of the window (with large windows this gets annoying). I know the rules: don't compain about problems - fix them and submit the patches. Well, as soon as I get a little breathing room in my schedule, I plan on it. Anybody else who is interested in patching this program into a truely usable piece of code, I would be interested in hearing from you. (Anybody from SUN consider working on this???...) -Ken Marks >>> Sorry for the ^L's in the diffs, but they are in the code... <<< *** xgdb.c.orig Tue Jan 10 14:25:55 1989 --- xgdb.c Tue Jan 10 15:20:33 1989 *************** *** 105,111 **** /* Get the symtab and line number of the selected frame. */ ! fi = get_frame_info (selected_frame); sal = find_pc_line (fi->pc, fi->next_frame); /* Strictly this is wrong, but better than a blank display */ --- 105,113 ---- /* Get the symtab and line number of the selected frame. */ ! if ((fi = get_frame_info (selected_frame)) == NULL) ! return; ! sal = find_pc_line (fi->pc, fi->next_frame); /* Strictly this is wrong, but better than a blank display */ *************** *** 421,427 **** --- 423,433 ---- static Arg fileArgs[3]; XtTextSource src; XtTextSink sink; + Widget text_widget; + text_widget = XtCreateManagedWidget("disk", textWidgetClass, parent, + NULL, 0); + XtSetArg (fileArgs[0], XtNfile, filename); src = XtDiskSourceCreate(parent, fileArgs, 1); sink = XtAsciiSinkCreate(parent, NULL, 0); *************** *** 429,435 **** XtSetArg (fileArgs[0], XtNtextOptions, scrollVertical); XtSetArg (fileArgs[1], XtNtextSource, src); XtSetArg (fileArgs[2], XtNtextSink, sink); ! return XtCreateManagedWidget("disk", textWidgetClass, parent, fileArgs, XtNumber (fileArgs)); } /* Entry point to create the widgets representing our display. */ --- 435,442 ---- XtSetArg (fileArgs[0], XtNtextOptions, scrollVertical); XtSetArg (fileArgs[1], XtNtextSource, src); XtSetArg (fileArgs[2], XtNtextSink, sink); ! XtSetValues(text_widget, fileArgs, XtNumber (fileArgs)); ! return text_widget; } /* Entry point to create the widgets representing our display. */