>Number:         5044
>Category:       port-mac68k
>Synopsis:       gdb crashes system while stepping over printf()
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    gnats-admin (GNATS administrator)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Feb 23 09:35:01 1998
>Last-Modified:
>Originator:     John Firestone
>Organization:
	
>Release:        GDB 4.16 (m68k-netbsd)
>Environment:
	Mac IIsi
	NetBSD 1.3, X11R6
	Mac IIsi
	stdio
System: NetBSD eisbox 1.3 NetBSD 1.3 (GENERICSBC) #56: Wed Dec 31 13:40:50 PST 1997 allen@wormey:/usr/src/sys/arch/mac68k/compile/GENERICSBC mac68k

>Description:
	If a breakpoint is set at a printf() line, gdb stops at the printf()
	but is unable to proceed to the next line.  Instead it stops
	in _DYNAMIC() then repeatedly in end() until the system crashes.
>How-To-Repeat:
	% cat > foo.c
        #include <stdio.h>
        main()
        {
	    printf("Hello world.\n");
	    printf("Moin.\n");
	}
        ^D

	% gdb foo
        GDB is free software and you are welcome to distribute copies of it
	 under certain conditions; type "show copying" to see the conditions.
	There is absolutely no warranty for GDB; type "show warranty" for details.
	GDB 4.16 (m68k-netbsd), Copyright 1996 Free Software Foundation, Inc...
	(gdb) break 4
	Breakpoint 1 at 0x27bc: file foo.c, line 4.
	(gdb) run
	Starting program: /home/erf/foo 

	Breakpoint 1, main () at foo.c:4
	4           printf("Hello world.\n");
	(gdb) next
	0x4084 in _DYNAMIC ()
	(gdb) next
	Single stepping until exit from function _DYNAMIC, 
	which has no line number information.
	0x4004050 in end ()
	(gdb) next
	Single stepping until exit from function end, 
	which has no line number information.
	0x4010294 in end ()
	(gdb) next
	Single stepping until exit from function end, 
	which has no line number information.

	Stopped at      _trap12:        movl    d1, sp@-
	db>
	[System stopped.]
>Fix:
	
>Audit-Trail:
>Unformatted: