http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48952
Summary: ICE in inline_merge_summary during linux kernel LTO build Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: lto AssignedTo: unassig...@gcc.gnu.org ReportedBy: andi-...@firstfloor.org When running a Linux kernel LTO build with recent mainline (gcc version 4.7.0 20110510 (experimental) (GCC)) I get a segfault during the final lto-wpa phase In gdb I get Program received signal SIGSEGV, Segmentation fault. inline_merge_summary (edge=0x7f1ce05d90d0) at ../../gcc/gcc/ipa-inline-analysis.c:2025 2025 && ipa_get_cs_argument_count (IPA_EDGE_REF (edge (gdb) bt #0 inline_merge_summary (edge=0x7f1ce05d90d0) at ../../gcc/gcc/ipa-inline-analysis.c:2025 #1 0x000000000085b079 in inline_call (e=0x7f1ce05d90d0, update_original=Unhandled dwarf expression opcode 0xf3 ) at ../../gcc/gcc/ipa-inline-transform.c:185 #2 0x0000000000854561 in inline_small_functions () at ../../gcc/gcc/ipa-inline.c:1451 #3 ipa_inline () at ../../gcc/gcc/ipa-inline.c:1643 #4 0x000000000063c509 in execute_one_pass (pass=0xfff720) at ../../gcc/gcc/passes.c:1556 #5 0x000000000063cbca in execute_ipa_pass_list (pass=0xfff720) at ../../gcc/gcc/passes.c:1922 #6 0x000000000049ffe5 in do_whole_program_analysis () at ../../gcc/gcc/lto/lto.c:2517 #7 lto_main () at ../../gcc/gcc/lto/lto.c:2629 #8 0x00000000006ccc4a in compile_file (argc=76, argv=0x12c8470) at ../../gcc/gcc/toplev.c:570 #9 do_compile (argc=76, argv=0x12c8470) at ../../gcc/gcc/toplev.c:1928 #10 toplev_main (argc=76, argv=0x12c8470) at ../../gcc/gcc/toplev.c:2000 #11 0x0000003bc6e1ee5d in __libc_start_main (main=0x4a29e0 <main>, argc=16, ubp_av=0x7fff62bc8e28, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fff62bc8e18) at libc-start.c:226 #12 0x0000000000486f99 in _start () (gdb) The input files are very large. I can supply them on demand. They also require special binutils currently (HJ's latest version)