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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/17000] New: sss breakpoint on top of a regular breakpoint;
 gdb loses control
Date: Fri, 30 May 2014 16:09:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
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X-Bugzilla-Product: gdb
X-Bugzilla-Component: gdb
X-Bugzilla-Version: 7.7
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X-Bugzilla-Severity: normal
X-Bugzilla-Who: palves at redhat dot com
X-Bugzilla-Status: NEW
X-Bugzilla-Priority: P2
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https://sourceware.org/bugzilla/show_bug.cgi?id=17000

            Bug ID: 17000
           Summary: sss breakpoint on top of a regular breakpoint; gdb
                    loses control
           Product: gdb
           Version: 7.7
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
          Assignee: unassigned at sourceware dot org
          Reporter: palves at redhat dot com

This was first reported as a regression caused by the fix for 
bug 7143.  See discussion starting at:

 https://sourceware.org/bugzilla/show_bug.cgi?id=7143#c12

On software single-step targets, if another breakpoint happens to be inserted
where a single-step breakpoint is also inserted, and gdb removes the
single-step breakpoint, while intenting to leave the other breakpoint inserted,
GDB actually really removes the breakpoint from the target, while it thinks it
hasn't, leading to all sort of nasty issues related to the breakpoint being
missed.

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