Bug#1017962: mozjs102: Fails to build on armhf

[Simon McVittie]

On Tue, 23 Aug 2022 at 10:10:53 +0100, Simon McVittie wrote:
> On Mon, 22 Aug 2022 at 20:25:54 -0400, Jeremy Bicha wrote:
> > mozjs102 fails to build on armhf
> ...
> > In function ‘uint64_t js::jit::AtomicCmpXchg64SeqCst(uint64_t*,
> > uint64_t, uint64_t)’,
> >     inlined from ‘static T
> > js::jit::AtomicOperations::fetchAndSeqCst(T*, T) [with T = long long
> > int]’ at /<<PKGBUILDDIR>>/js/src/jit/shared/AtomicOperations-shared-jit.h:337:1,
> >     inlined from ‘static T
> > js::jit::AtomicOperations::fetchAndSeqCst(SharedMem<T*>, T) [with T =
> > long long int]’ at
> > /<<PKGBUILDDIR>>/js/src/jit/AtomicOperations.h:212:26,
> >     inlined from ‘virtual bool
> > cls_testAtomicOperationsI64::run(JS::HandleObject)’ at
> > /<<PKGBUILDDIR>>/js/src/jsapi-tests/testAtomicOperations.cpp:223:3:
> > /<<PKGBUILDDIR>>/debian/build/js/src/jit/AtomicOperationsGenerated.h:240:17:
> > error: ‘asm’ operand has impossible constraints
> >   240 |                 asm volatile (
> 
> I'm doing a build on amdahl to get the contents of the generated header,
> but it's going to take a while to get there.

Here's the generated file. The build is still going, so I don't know
whether the FTBFS will be reproducible.

    smcv
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