[PATCH 0/3] Atomic cleanup + clang-12 build fix

[Richard Henderson]

The first two patches are not strictly required, but they
were useful in tracking down the root problem here.

I understand the logic behind the clang-12 warning, but I think
it's a clear mistake that it should be enabled by default for a
target where alignment is not enforced by default.

I found over a dozen places where we would have to manually add
QEMU_ALIGNED(8) to uint64_t declarations in order to suppress
all of the instances.  IMO there's no point fighting this.


r~


Richard Henderson (3):
  qemu/atomic: Remove pre-C11 atomic fallbacks
  qemu/atomic: Use macros for CONFIG_ATOMIC64
  configure: Conditionally disable clang-12 -Watomic-alignment

 configure             |  23 +++--
 include/qemu/atomic.h | 229 +++---------------------------------------
 2 files changed, 31 insertions(+), 221 deletions(-)

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2.25.1