Hi! On Wed, Aug 10, 2022 at 01:43:18PM +0200, Anders Roxell wrote: > Clang warns: > > arch/powerpc/mm/book3s64/radix_tlb.c:1191:23: error: variable 'hstart' is > uninitialized when used here [-Werror,-Wuninitialized] > __tlbiel_va_range(hstart, hend, pid, > ^~~~~~ > arch/powerpc/mm/book3s64/radix_tlb.c:1175:23: note: initialize the variable > 'hstart' to silence this warning
This note often is bad advice: hiding problems instead of investigating and solving them. Bah. If silencing warnings is your goal, look no further than "-w" :-) > Rework the 'if (IS_ENABLE(CONFIG_TRANSPARENT_HUGEPAGE))' so hstart/hend > always gets initialized, this will silence the warnings. That will also > simplify the 'else' path. Clang is getting confused with these warnings, > but the warnings is a false-positive. If it is, please report that bug to clang? It says "*is* uninitialized when used here", there can not be false positives to statements like that. If the analysis was heutistical it should say "may be" or such. Segher
