Error: CFI instruction used without previous .cfi_startproc

[Alex]

Hi

I get the following compiler (assembler) error in my project:

...
Compiling file: hardfault_handler_gcc.c
/tmp/ccstUNqW.s: Assembler messages:
/tmp/ccstUNqW.s:46: Error: CFI instruction used without previous .cfi_startproc
/tmp/ccstUNqW.s:47: Error: CFI instruction used without previous .cfi_startproc
Makefile.common:273: recipe for target '_build/nrf52810_xxaa/hardfault_handler_gcc.c.o' failed
make: *** [_build/nrf52810_xxaa/hardfault_handler_gcc.c.o] Error 1

The error seems to be related to the debugging information compiler flag (-g). The error only occurs when the flag "-g0" (or no g-flag) is set.

If a debug information flag "-g1" or greater is set no error occurs.

Does anybody know how to solve this problem?

Currently I try to migrate a project from nRF52832 to nRF52810.This error does not occur in the "old" nRF52832-Project.

Here are some more information about the "new" nRF52810-Project:

nRF52810, SDK14.2, S112 (5.1.0), arm-gcc toolchain (V5.4.1)

[Alex]

FYI: The hardfault_handler_gcc.c comes with the SDK and it is not modified.

It is loacted in <PATH TO SDK14.2>/components/libraries/hardfault/nrf52/handler/.

[FormerMember]

The problem could be an issue with the compiler. Could you try another version of gcc and check if that changes anything?

[Alex]

I tried the following versions of the GNU Arm Embedded Toolchain but without success:

- 4.9.3 20150529 (release) [ARM/embedded-4_9-branch revision 227977]

- 5.4.1 20160609 (release) [ARM/embedded-5-branch revision 237715]

- 6.3.1 20170620 (release) [ARM/embedded-6-branch revision 249437]

- 7.2.1 20170904 (release) [ARM/embedded-7-branch revision 255204]

By the way, in the release notes of the SDK14.2 the following is written:

The following toolchains/devices have been used for testing and
verification:
- ARM: MDK-ARM version 5.18a
- GCC: GCC ARM Embedded 4.9 2015q3
- IAR: IAR Workbench 7.80.4
- SES: SES 3.30
- Linux: Ubuntu 17.04, Kernel 4.10.0.
- Jlink: 6.20d

Why is only the "old" 4.9 version of the GCC ARM Embedded toolchain used by Nordic?

[Alex]

The question regarding the toolchain version was answered here:

GCC ARM Embedded Toolchain used for testing and verification