http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50602
Bug #: 50602 Summary: ICE in tree_nrv, at tree-nrv.c:155 during large LTO build Classification: Unclassified Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassig...@gcc.gnu.org ReportedBy: andi-...@firstfloor.org I get this at the end of a large 32bit LTO build. Cannot give you a small test case unless you want the full builddir. Bisect is difficult because the build relies on some recent other fixes. But I have a core file: #6 0x0000000000b47eb4 in fancy_abort (file=Unhandled dwarf expression opcode 0xf3 ) at ../../gcc/gcc/diagnostic.c:893 #7 0x000000000075ac05 in tree_nrv () at ../../gcc/gcc/tree-nrv.c:155 #8 0x000000000068d7ab in execute_one_pass (pass=0x10a9ac0) at ../../gcc/gcc/passes.c:2064 #9 0x000000000068dae5 in execute_pass_list (pass=0x10a9ac0) at ../../gcc/gcc/passes.c:2119 #10 0x000000000075df39 in tree_rest_of_compilation (fndecl=0x2b84d3ea6900) at ../../gcc/gcc/tree-optimize.c:420 #11 0x000000000051ad36 in cgraph_expand_function (node=0x2b84e28a7360) at ../../gcc/gcc/cgraphunit.c:1805 #12 0x000000000051c612 in cgraph_output_in_order () at ../../gcc/gcc/cgraphunit.c:1962 #13 cgraph_optimize () at ../../gcc/gcc/cgraphunit.c:2136 #14 0x00000000004cb7c5 in lto_main () at ../../gcc/gcc/lto/lto.c:2872 ... #7 0x000000000075ac05 in tree_nrv () at ../../gcc/gcc/tree-nrv.c:155 155 gcc_assert (ret_val == result); (gdb) p ret_val $3 = (tree_node *) 0x0 (gdb) pt result type = union tree_node { tree_base base; tree_typed typed; tree_common common; tree_int_cst int_cst; tree_real_cst real_cst; tree_fixed_cst fixed_cst; tree_vector vector; tree_string string; tree_complex complex; tree_identifier identifier; tree_decl_minimal decl_minimal; tree_decl_common decl_common; tree_decl_with_rtl decl_with_rtl; tree_decl_non_common decl_non_common; tree_parm_decl parm_decl; tree_decl_with_vis decl_with_vis; tree_var_decl var_decl; tree_field_decl field_decl; tree_label_decl label_decl; tree_result_decl result_decl; tree_const_decl const_decl; tree_type_decl type_decl; tree_function_decl function_decl; tree_translation_unit_decl translation_unit_decl; tree_type_common type_common; tree_type_with_lang_specific type_with_lang_specific; tree_type_non_common type_non_common; tree_list list; tree_vec vec; tree_exp exp; tree_ssa_name ssa_name; tree_block block; tree_binfo binfo; tree_statement_list stmt_list; tree_constructor constructor; tree_omp_clause omp_clause; tree_optimization_option optimization; tree_target_option target_option; } *