On 7/30/19 7:37 AM, Martin Liška wrote: > Hi. > > Thanks to Martin I was able to prepare a proper fix. The issue is that > cgraph_edge::resolve_speculation can delete this pointer (yes, it's > super nasty) and so that the caller can't use this->something > right after the function returns. > > For the long term, I'll rework the ::resolve_speculation function. > > The patch survives --enable-checking bootstrap on x86_64-linux-gnu. > > Ready to be installed after proper testing? > Thanks, > Martin > Would this possibly be the cause of this error building the kernel:
> /opt/notnfs/law/jenkins/workspace/x86_64-linux-gnu/linux/lib/iov_iter.c: In > function 'memcpy_to_page': > /opt/notnfs/law/jenkins/workspace/x86_64-linux-gnu/linux/lib/iov_iter.c:1718:1: > internal compiler error: in gt_ggc_mx_symtab_node, at gtype-desc.c:1382 > 1718 | EXPORT_SYMBOL(iov_iter_for_each_range); > | ^~~~~~~~~~~~~ > 0x66537c gt_ggc_mx_symtab_node(void*) > > /opt/notnfs/law/jenkins/workspace/x86_64-linux-gnu/obj/gcc/gcc/gtype-desc.c:1382 > CC fs/super.o > 0xcafbcd gt_ggc_ma_order > ./gt-passes.h:31 > 0xcafbcd gt_ggc_ma_order > ./gt-passes.h:26 > 0xac0555 ggc_mark_root_tab > ../../../gcc/gcc/ggc-common.c:77 > 0xac075c ggc_mark_roots() > ../../../gcc/gcc/ggc-common.c:94 > 0x8ee485 ggc_collect() > ../../../gcc/gcc/ggc-page.c:2201 > Please submit a full bug report, Jeff
