Sound corruption when executables are built with arm-none-eabi-gcc --version 10.3.1 or later

[fhoedemakers]

Sound corruption when executables are built with arm-none-eabi-gcc --version 10.3.1 or later

[fhoedemakers]

See table below for several testbuilds on different platforms.

arm-none-eabi-gcc --version	Sound OK	Platform
8.3.1	Yes	Debian Bullseye - Raspberry PI
9.2.1	Yes	WSL - 20.04.6 LTS (Focal Fossa) - Windows 11
9.2.1	Yes	Github Action ubuntu-20.04
10.3.1	No	Github Action ubuntu-latest (22.04)
12.2.1	No	Debian Bookworm - raspberry PI

[fhoedemakers]

Workaround applied to Github action by changing .github/workflows/buildandrelease.yml to run on ubuntu-20.04. This version uses 9.2.1 of arm-none-eabi-gcc

Keeping the issue open, because manual builds on later versions of ubuntu (22.04 or higher) must simply work. And i assume it is a problem in my code.

[fhoedemakers]

Statement below in sms.h causes a memory overflow which in turn causes the sound corruption.

__builtin_memset(sms.dummy, 0, 0x2000);