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* insight/226: core dump when cursor move over class member function without debugger info.
@ 2003-05-07 22:53 ching
0 siblings, 0 replies; only message in thread
From: ching @ 2003-05-07 22:53 UTC (permalink / raw)
>Synopsis: core dump when cursor move over class member function without debugger info.
>Arrival-Date: Wed May 07 22:53:00 UTC 2003
Linux 7.3 and Solaris.
insight 5.2 crashed when the cursor moves over a class
member function that did not compile with debugger
Platform: Redhat 7.3
Linux scooby 2.4.18-3 #1 Thu Apr 18 07:37:53 EDT 2002 i686 unknown
Here is of my observation. It looks like the problem is caused
by tk_command_loop() cannot not re-entry. So what happens is
when the error occurs in
124 error ("invalid pointer to member function");
which caused a siglongjump to gdb/top.c
421 caught = SIGSETJMP (catch);
422 if (!caught)
423 val = (*func) (func_uiout, func_args);
after that it will call tk_command_loop() in gdb/gdbtk/generic/gdbtk-hooks.c
to re-enter the Tk_MainLoop. Since it is the same gdbtk_interp tcl interpeter
and it keeps evaluation the same tcl_command and finially the stack is screwed up.
1. unzip the carsh.bz2 file.
2. cd crash
3. invoke insight
4. file t
5. b t.cpp:60
7. move cusor over line 60 of "data_valid.read()"
after that you will see dozen of the following messages.
invalid pointer to member function
8. enter c to continue debugging
9. Segmentation fault (core dumped)
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2003-05-07 22:53 insight/226: core dump when cursor move over class member function without debugger info ching
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