[Bug target/66547] arm-none-eabi-gcc - stack misaligned when calling va_arg function

[matt at hpamotorsport dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66547

--- Comment #1 from Matthew Peters <matt at hpamotorsport dot com> ---
Adding some notes.

The stack is a local stack generated with "static WORK_AREA(...)" from ChibiOS.
I've checked and the stack is aligned at the beginning of
performance_suite_thread.

I've been unable to make a test that produces the error.