> hubi...@gcc.gnu.org writes: > > > Author: hubicka > > Date: Wed Dec 10 21:17:28 2014 > > New Revision: 218609 > > > > URL: https://gcc.gnu.org/viewcvs?rev=218609&root=gcc&view=rev > > Log: > > * doc/invoke.texi: (-devirtualize-at-ltrans): Document. > > * lto-cgraph.c (lto_output_varpool_node): Mark initializer as removed > > when it is not streamed to the given ltrans. > > (compute_ltrans_boundary): Make code adding all polymorphic > > call targets conditional with !flag_wpa || flag_ltrans_devirtualize. > > * common.opt (fdevirtualize-at-ltrans): New flag. > > /usr/local/gcc/gcc-20141211/gcc/testsuite/g++.dg/ipa/pr64059.C:56:1: internal > compiler error: Segmentation fault. > 0x4000000000df742f crash_signal. > ../../gcc/toplev.c:358. > 0x40000000012f2c9f get_binfo_at_offset(tree_node*, long, tree_node*). > ../../gcc/tree.c:11922. > 0x4000000000a0d75f possible_polymorphic_call_targets(tree_node*, long, > ipa_polymorphic_call_context, bool*, void**, bool). > ../../gcc/ipa-devirt.c:2404. > 0x4000000000b6f2ef possible_polymorphic_call_targets(cgraph_edge*, bool*, > void**, bool). > ../../gcc/ipa-utils.h:109. > 0x4000000000b6f2ef compute_ltrans_boundary(lto_symtab_encoder_d*). > ../../gcc/lto-cgraph.c:952. > 0x4000000000c40f2f ipa_write_summaries(bool). > ../../gcc/passes.c:2511. > 0x40000000006584ff ipa_passes. > ../../gcc/cgraphunit.c:2091. > 0x40000000006584ff symbol_table::compile(). > ../../gcc/cgraphunit.c:2187. > 0x400000000065be1f symbol_table::finalize_compilation_unit(). > ../../gcc/cgraphunit.c:2340. > 0x400000000029bcef cp_write_global_declarations(). > ../../gcc/cp/decl2.c:4688. > Please submit a full bug report,. > with preprocessed source if appropriate.. > Please include the complete backtrace with any bug report.. > See <http://gcc.gnu.org/bugs.html> for instructions.. > > FAIL: g++.dg/ipa/pr64059.C -std=gnu++11 (internal compiler error)
The problem here is that BINFO is not streamed because devirt is disabled. I have commited the following patch (that I have in my local tree for some time) Honza Index: ChangeLog =================================================================== --- ChangeLog (revision 218658) +++ ChangeLog (working copy) @@ -1,3 +1,8 @@ +2014-12-12 Jan Hubicka <hubi...@ucw.cz> + + * ipa-devirt.c (possible_polymorphic_call_targets): Return early + if otr_type has no BINFO. + 2014-12-12 Zhenqiang Chen <zhenqiang.c...@arm.com> PR rtl-optimization/63917 Index: ipa-devirt.c =================================================================== --- ipa-devirt.c (revision 218639) +++ ipa-devirt.c (working copy) @@ -2239,7 +2239,7 @@ possible_polymorphic_call_targets (tree /* If ODR is not initialized or the constext is invalid, return empty incomplete list. */ - if (!odr_hash || context.invalid) + if (!odr_hash || context.invalid || !TYPE_BINFO (otr_type)) { if (completep) *completep = context.invalid;