Otherwise the android build fails with
error : unable to find string literal operator ‘operator"" PRIx64’
There are several resources referring to the problem, which is related to c++11, in our case used when building mesa for lollipop.
I've not investigated all the semantics, some people even suggested a bug in the gcc compiler, I just saw the building error was solved with one little space for lollipop and no side effect when c+11 not used.
v2: [Emil Velikov] add an alternative commit message from Mauro.
e838d91 nouveau: android: add space before PRIx64 macro
.../drivers/nouveau/codegen/nv50_ir_print.cpp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)