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Re: i386 9.99.17 build fails for NET4501 kernel

Le 14/10/2019 à 01:01, Chavdar Ivanov a écrit :
My amd64 build also failed with
src/tests/lib/libnvmm/h_mem_assist.c:178:2: error: missing initializer
for field 'off' of 'const struct test'
(and many more).

Ah yes, I was doing local builds of it, not the in-src ones.

On Sun, 13 Oct 2019 at 23:48, matthew green <> wrote:

Robert Swindells writes:

"John D. Baker" <>
Building the NET4501 kernel with 9.99.17 sources fails with:

/x/current/src/sys/arch/x86/x86/vm_machdep.c: In function 'cpu_lwp_fork':
/x/current/src/sys/arch/x86/x86/vm_machdep.c:134:21: error: variable 'pcb2' might be clobbered by 'longjmp' or 'vfork' [-Werror=clobbered]
  struct pcb *pcb1, *pcb2;

My custom amd64 kernels fail too, there was a failure report from
someone else but it doesn't seem to be in the archive yet.

The amd64 GENERIC config does build though.

i don't know what is up yet, but maxv changed this file recently.
i wonder if there was/is something special about either SVS here,
or fpu_lwp_fork() it's triggering on.  i don't see any attributes
that should apply here.. guessing SVS as it is the only conditional
compile there that should matter, but i still don't see anything
that actually points to it.


I don't understand what this error means. There is nothing related to
longjmp in this code or any code I've touched, and the FPU code does
not rely on that. As well I don't see what difference SVS could make
since it doesn't rely on that either.

No idea, looks like a compiler bug.

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