gdb/459: DWARF2 and unknown languages

[fw at deneb dot enyo dot de]

>Number:         459
>Category:       gdb
>Synopsis:       DWARF2 and unknown languages
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Apr 04 21:28:00 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     fw@deneb.enyo.de
>Release:        GDB 5.1.1, 5.2 (end of March)
>Organization:
>Environment:
Debian GNU/Linux unstable, x86
>Description:
It seems that GDB (starting with 5.1.1 or so) can no longer debug programs written in languages unknown to it.  With previous GDB versions, you could at least set breakpoints, get backtraces, and examine most variables, although you had to take name mangling into account.

For example, if I try to set a breakpoint in an Ada program, I just get the error message "internal error - unimplemented function unk_lang_create_fundamental_type called."

This behavior only occurs with DWARF2 debugging information, as far as I can tell.
>How-To-Repeat:
Compile the no_debug.adb file using a recent GCC version (3.1 or 3.2; you have to run gnatchop first), with: "gcc -g -S no_debug.adb" and "gcc no_debug.s".  Run "gdb a.out", try to set a breakpoint on "main".
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
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