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From: "egarcia.charger at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/27509] New: ARM Cortex-M7: Setting breakpoint and
 stepping through causes internal error at function 'finish_step_over'
Date: Thu, 04 Mar 2021 01:15:48 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D27509

            Bug ID: 27509
           Summary: ARM Cortex-M7: Setting breakpoint and stepping through
                    causes internal error at function 'finish_step_over'
           Product: gdb
           Version: 10.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: breakpoints
          Assignee: unassigned at sourceware dot org
          Reporter: egarcia.charger at gmail dot com
  Target Milestone: ---

Here is my setup: J-LINK Plus -> Cortex-M7 (STM32H750).=20
GDB: GNU gdb (GNU Arm Embedded Toolchain 10-2020-q4-major) 10.1.90.20201028=
-git
RTOS: ChibiOS
JLinkGDBServer: JLinkARM.dll V6.90a (DLL compiled Dec 14 2020 17:13:26)

Error:=20

[New Remote target]
/tmp/jenkins-GCC-10-pipeline-48_20201124_1606180639/src/gdb/gdb/infrun.c:56=
90:
internal-error: int finish_step_over(struct execution_control_state *):
Assertion `ecs->event_thread->control.trap_expected' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.

Steps:

1. Launch JLinkGDBServer with the flag `-rtos GDBServer/RTOSPlugin_ChibiOS`=
 to
enable thread awareness.
2. Set breakpoint in code.
3. Program code then run to breakpoint.
4. Step through code.
5. Error occurs.

Temporary Workaround:

Disable thread awareness when launching JLinkGDBServer (definitely not ideal
since thread awareness is very useful).

I tried this on v9.2 and v10.1 of GDB and both have the same error, just at
different line numbers. Is there anymore information I can provide to help =
you
fix this issue? It makes debugging extremely unusable.

Thank you.

--=20
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