You can test locally by building with clang (llvm) instead of gcc:
./configure --cc=clang
Using --cc=clang is causing the following error in several different places:
qemu/target/ppc/translate.c:1894:18: error: result of comparison
'target_ulong' (aka 'unsigned int') <= 4294967295
is always true [-Werror,-Wtautological-type-limit-compare]
if (mask <= 0xffffffffu) {
~~~~ ^ ~~~~~~~~~~~
these errors don't come up when building with gcc. Any idea how to fix
this? Or should I just suppress it?
I'm of the opinion that it should be suppressed.
This is the *correct* test for ppc64, and the warning for ppc32 is simply
because target_ulong == uint32_t. True is the correct result for ppc32.
We simply want the compiler to DTRT: simplify this test and remove the else as
unreachable.
There may be ways to rewrite that expression to avoid triggering the
warning on a 32-bit platform. Untested, but does this help:
if (sizeof(mask) > 4 && mask <= 0xffffffffu) {
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3226
Virtualization: qemu.org | libvirt.org
