Bug#884054: polyml: FTBFS on sh4: MemMgr: Assertion `t->tree[r] == 0' failed.

[James Clarke]

> On 10 Dec 2017, at 22:09, Aaron M. Ucko <ucko at debian.org> wrote:
> 
> Source: polyml
> Version: 5.7.1-1
> Severity: important
> Tags: upstream
> Justification: fails to build from source (but built successfully in the past)
> User: debian-superh at lists.debian.org
> Usertags: sh4
> 
> Builds of polyml 5.7.x for sh4 (admittedly not a release architecture)
> have been failing:
> 
>  echo "use \"./ROOT.sml\";" | ../../poly -q -error-exit
>  poly: memmgr.cpp:957: void MemMgr::AddTreeRange(SpaceTree**, MemSpace*, uintptr_t, uintptr_t): Assertion `t->tree[r] == 0' failed.
> 
> Could you please take a look?

Yeah, I noticed this back when I was uploading to experimental a few months
ago. I suspect it's an issue with qemu-user's atomics support on sh4, which
have been notoriously unreliable in the past, and asked Adrian to see if he
could reproduce this on real hardware, but that never ended up happening. Given
its reliable reproduction on the sh4 vs9X buildds and nowhere else I would be
surprised if it was in fact a bug in the package, but you never know...

James