GDC 9 and ARM Cortex-M

[Johannes Pfau]

Am Sun, 19 May 2019 06:54:14 +0000 schrieb Timo Sintonen:

> I am updating my toolset and libraries to GCC/GDC 9.1 release. First
> impression is that druntime needs more work than with previous versions.
> Many places to change and even compiler crashes when compiling some
> files.
> 
> Before I look further I want to ask if there has been any testing with
> this target (cross compiler linux->arm-eabi). Is it expected to work,
> not to work or not tested at all.

Cross-compilers in general are expected to work, but only basic testing 
has been done. Bare-metal targets have some basic betterC testing, but we 
only test without druntime. We never tested druntime or stripped-down 
druntime on baremetal targets. Compiler crashes are certainly bugs and 
should be reported.
Druntime requiring more changes now is sad, but not really unexpected as 
I don't think anyone in the druntime team focuses on embedded targets. I 
guess most people working on bare-metal completely reimplement a custom 
runtime or use betterC with the C runtime only. 

-- 
Johannes