Squashed commit of the following:

Squashed commit of the following:

commit 41cd7c9a3270c5a3c94d379dee2e4242ec69fc25
Author: Chris Fogelklou <chris.fogelklou@gmail.com>
Date:   Fri Mar 11 06:20:14 2022 +0100

    Remove some extraneous lines.

commit b0a7dddc5a3bf03a7bec2621cce5dd1c2620753e
Author: Chris Fogelklou <chris.fogelklou@gmail.com>
Date:   Fri Mar 11 06:10:01 2022 +0100

    Add crashy builds.

commit 3a6b343df68f074aa626f619d7ac9c8fe860e23a
Author: Chris Fogelklou <chris.fogelklou@gmail.com>
Date:   Fri Mar 11 06:09:09 2022 +0100

    One more test - crashy flags

commit 2c399f4fd42488f6aae205b369ea10d91b824050
Author: Chris Fogelklou <chris.fogelklou@gmail.com>
Date:   Fri Mar 11 06:05:14 2022 +0100

    Install valgrind before using it.

commit a57a7abd526934f5d90ad2a20c651bc832ea3047
Author: Chris Fogelklou <chris.fogelklou@gmail.com>
Date:   Fri Mar 11 06:02:39 2022 +0100

    Try GCC and Clang, build with different varieties of compiler and cflags

commit 07f435959c6cfc10f4d6a46d9ba5048bbe30a410
Author: Chris Fogelklou <chris.fogelklou@gmail.com>
Date:   Fri Mar 11 05:58:41 2022 +0100

    Try slightly better optimization.

commit d5d8b6ba7eb453a2fe8e5aca7715477443135b64
Author: Chris Fogelklou <chris.fogelklou@gmail.com>
Date:   Fri Mar 11 05:55:45 2022 +0100

    Missed the make clean command.

commit cf60bc603ce28eb6671414edb5e003f9bf4a6e87
Author: Chris Fogelklou <chris.fogelklou@gmail.com>
Date:   Fri Mar 11 05:52:07 2022 +0100

    Try with optimization level 0

commit 630b0a957555adb0b22af9eb720fb25bee56f728
Author: Chris Fogelklou <chris.fogelklou@gmail.com>
Date:   Fri Mar 11 05:41:30 2022 +0100

    Start a new PR so as to not keep working in the old one.