UNITTEST Warnings: Windows path separators, variable 'tchain'

[yennster]

Description

Environment: Windows 10
gcc mingw version: 8.1.0
Mbed OS version: mbed-os-5.10.0-rc2
Mbed CLI version: 1.8.0

After running command: mbed test --unittests --coverage html

Warnings:

100% tests passed, 0 tests failed out of 7



Total Test time (real) =   4.17 sec




(WARNING) filters must use forward slashes as path separators

(WARNING) your filter : C:\Users\jenplu01\Repos\oob-5.10\mbed-os\UNITTESTS

(WARNING) did you mean: C:\Users/jenplu01/Repos/oob-5.10/mbed-os\UNITTESTS

(WARNING) filters must use forward slashes as path separators

(WARNING) your filter : C:\Users\jenplu01\Repos\oob-5.10\mbed-os\BUILD\unittests

(WARNING) did you mean: C:\Users/jenplu01/Repos/oob-5.10/mbed-os\BUILD\unittests




HTML code coverage report created.
[mbed] ERROR: Unknown Error: local variable 'tchain' referenced before assignment
---

Issue request type

[ ] Question
[ ] Enhancement
[X] Bug

[yennster]

The local variable 'tchain' error also occurs on Mac OS:

100% tests passed, 0 tests failed out of 7



Total Test time (real) =   0.09 sec



HTML code coverage report created.
[mbed] ERROR: Unknown Error: local variable 'tchain' referenced before assignment
---

[ciarmcom]

ARM Internal Ref: MBOTRIAGE-1643

[MarceloSalazar]

@OPpuolitaival please review

[OPpuolitaival]

@lorjala please check this

[0xc0170]

@OPpuolitaival This should be fixed (two fixes above were merged) and are part of 5.10.