[riot-notifications] [RIOT-OS/RIOT] arm7: `printf()` with `float`/`double` not working (#11885)

Marian Buschsieweke notifications at github.com
Mon Jul 22 21:16:25 CEST 2019


#### Description

Similar to https://github.com/RIOT-OS/RIOT/issues/11861 `printf()` is not working as well, but due to a different yet to determine reason. This was figured out in https://github.com/RIOT-OS/RIOT/pull/11883

#### Steps to reproduce the issue

```
BOARD=msba2 make --no-print-directory -C tests/unittests/ tests-printf_float  flash-only test

Type '/exit' to exit.
2019-07-22 17:10:02,014 - INFO # main(): This is RIOT! (Version: 2019.10-devel-106-g2d5ed-pr/newib/remove_use_nano_specs_variable)
2019-07-22 17:10:02,015 - INFO # .
2019-07-22 17:10:02,019 - INFO # pkt_tests.sfprintf_float (tests/unittests/tests-printf_float/tests-printf_float.c 40) exp "2016.034900" was "-0.000000"
2019-07-22 17:10:02,019 - INFO # 
2019-07-22 17:10:02,020 - INFO # run 1 failures 1
```

#### Expected results
Unit test passes

#### Actual results
Unit test fails

#### Versions
Current RIOT master

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https://github.com/RIOT-OS/RIOT/issues/11885
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