[Bug remote/24439] New: remote_vcont_probe is not performed prior to using vCont packets in non-stop mode

[radu.lazarescu at nxp dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=24439

            Bug ID: 24439
           Summary: remote_vcont_probe is not performed prior to using
                    vCont packets in non-stop mode
           Product: gdb
           Version: HEAD
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: remote
          Assignee: unassigned at sourceware dot org
          Reporter: radu.lazarescu at nxp dot com
  Target Milestone: ---

Created attachment 11735
  --> https://sourceware.org/bugzilla/attachment.cgi?id=11735&action=edit
Log of remote debug communication

Remote debugging ARM target in non-stop mode (arm-none-eabi) with gdb 8.2 or
later shows vCont packages being used without querying support through vCont?
packet first.

remote_vcont_probe is not called prior to using vCont packets
This is happening in non-stop mode only; all-stop mode works fine.
It was working fine in gdb-7.12-branch. Apparently it broke after vCont
coalescing has been introduced.

remote debug log attached

Note the status of verbose-resume-packet is still unknown, despite the fact
that vCont resume has already been used.

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