[Bug remote/21761] New: Missed step-resume breakpoints when placed over a false conditional breakpoint

["simon.marchi at ericsson dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=21761

            Bug ID: 21761
           Summary: Missed step-resume breakpoints when placed over a
                    false conditional breakpoint
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: remote
          Assignee: unassigned at sourceware dot org
          Reporter: simon.marchi at ericsson dot com
  Target Milestone: ---

A step-resume breakpoint placed at the same address as a conditional breakpoint
whose condition is false (condition evaluated by target) is missed.  The reason
is that GDB doesn't consider the step-resume breakpoint when deciding what the
final condition for this address should be.  As a result, we place a breakpoint
whose condition is false.  The placed breakpoint should be unconditional,
because step-resume breakpoints are always unconditional.

I'll attach a test that fails with running with native-gdbserver:

$ make check TESTS="*/step-into-function-on-false-break-cond.exp"
RUNTESTFLAGS="--target_board=native-gdbserver"

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