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insight/41: Dereferencing NULL in variable window will core dump
- To: insight-gnats at sourceware dot cygnus dot com
- Subject: insight/41: Dereferencing NULL in variable window will core dump
- From: rich at iozo dot com
- Date: 4 Aug 2000 22:51:35 -0000
- Reply-To: rich at iozo dot com
- Resent-Cc: insight-prs at sourceware dot cygnus dot com
- Resent-Reply-To: insight-gnats@sourceware.cygnus.com, rich@iozo.com
>Number: 41
>Category: insight
>Synopsis: Dereferencing NULL in variable window will core dump
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: change-request
>Submitter-Id: net
>Arrival-Date: Fri Aug 04 15:53:00 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator: rich@iozo.com
>Release: Insight 5.0 - release
>Organization:
>Environment:
RedHat Linux 6.2
>Description:
When I have a node that is NULL, I can click on it to
dereference it, which will then send my debugging session
into a tailspin and die. This may be a "don't do that"
thing, so that's why this is a change request.
My opinion, even debuggers shouldn't core dump. Either the
debugger should always prevent this, or warn you.
>How-To-Repeat:
1) Compile the program wiuth debugging.
2) Run under the debugger.
3) set a breakpoint on return (line 10).
4) Run
(stops at breakpoint)
5) View local variables.
6) Expand testNode
7) Expand testNode->next
8) Expand testNode->next->next
core dump
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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