https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63504
--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> --- Two more variations of issue 3) ==47649== Invalid read of size 4 ==47649== at 0x10B00978: reg_num_sign_bit_copies_for_combine(rtx_def const*, machine_mode, rtx_def const*, machine_mode, unsigned int, unsigned int*) (combine.c:9581) ==47649== by 0x105E3CC3: num_sign_bit_copies1(rtx_def const*, machine_mode, rtx_def const*, machine_mode, unsigned int) (rtlanal.c:4661) ==47649== by 0x10B0493B: if_then_else_cond(rtx_def*, rtx_def**, rtx_def**) (combine.c:8785) ==47649== by 0x10B047D7: if_then_else_cond(rtx_def*, rtx_def**, rtx_def**) (combine.c:8640) ==47649== by 0x10B12D67: combine_simplify_rtx(rtx_def*, machine_mode, int, int) (combine.c:5270) ==47649== by 0x10B14C7B: subst(rtx_def*, rtx_def*, rtx_def*, int, int, int) (combine.c:5207) ==47649== by 0x10B14DF7: subst(rtx_def*, rtx_def*, rtx_def*, int, int, int) (combine.c:5152) ==47649== by 0x10B1694B: try_combine(rtx_insn*, rtx_insn*, rtx_insn*, rtx_insn*, int*, rtx_insn*) (combine.c:3093) ==47649== by 0x10B1BA47: combine_instructions (combine.c:1261) ==47649== by 0x10B1BA47: rest_of_handle_combine (combine.c:13902) ==47649== by 0x10B1BA47: (anonymous namespace)::pass_combine::execute(function*) (combine.c:13945) ==47649== by 0x10573E27: execute_one_pass(opt_pass*) (passes.c:2151) ==47649== by 0x105744C3: execute_pass_list_1(opt_pass*) (passes.c:2203) ==47649== by 0x105744DB: execute_pass_list_1(opt_pass*) (passes.c:2204) ==47649== Address 0x69d38a8 is 0 bytes after a block of size 1,720 alloc'd ==47649== at 0x402924C: malloc (vg_replace_malloc.c:296) ==47649== by 0x10C6DE73: xmalloc (xmalloc.c:147) ==47649== by 0x105B2883: regstat_init_n_sets_and_refs() (regstat.c:60) ==47649== by 0x10B1AEE3: rest_of_handle_combine (combine.c:13899) ==47649== by 0x10B1AEE3: (anonymous namespace)::pass_combine::execute(function*) (combine.c:13945) ==47649== by 0x10573E27: execute_one_pass(opt_pass*) (passes.c:2151) ==47649== by 0x105744C3: execute_pass_list_1(opt_pass*) (passes.c:2203) ==47649== by 0x105744DB: execute_pass_list_1(opt_pass*) (passes.c:2204) ==47649== by 0x1057455B: execute_pass_list(function*, opt_pass*) (passes.c:2214) ==47649== by 0x102E2157: cgraph_node::expand() (cgraphunit.c:1735) ==47649== by 0x102E3727: expand_all_functions (cgraphunit.c:1871) ==47649== by 0x102E3727: symbol_table::compile() (cgraphunit.c:2206) ==47649== by 0x102E4F93: symbol_table::finalize_compilation_unit() (cgraphunit.c:2283) ==47649== by 0x104DF877: write_global_declarations() (langhooks.c:328) ==47649== ==47649== Invalid read of size 4 ==47649== at 0x10B00C68: reg_nonzero_bits_for_combine(rtx_def const*, machine_mode, rtx_def const*, machine_mode, unsigned long, unsigned long*) (combine.c:9504) ==47649== by 0x105DAEF3: nonzero_bits1(rtx_def const*, machine_mode, rtx_def const*, machine_mode, unsigned long) (rtlanal.c:4175) ==47649== by 0x10B04C23: if_then_else_cond(rtx_def*, rtx_def**, rtx_def**) (combine.c:8792) ==47649== by 0x10B047D7: if_then_else_cond(rtx_def*, rtx_def**, rtx_def**) (combine.c:8640) ==47649== by 0x10B12D67: combine_simplify_rtx(rtx_def*, machine_mode, int, int) (combine.c:5270) ==47649== by 0x10B14C7B: subst(rtx_def*, rtx_def*, rtx_def*, int, int, int) (combine.c:5207) ==47649== by 0x10B14DF7: subst(rtx_def*, rtx_def*, rtx_def*, int, int, int) (combine.c:5152) ==47649== by 0x10B1694B: try_combine(rtx_insn*, rtx_insn*, rtx_insn*, rtx_insn*, int*, rtx_insn*) (combine.c:3093) ==47649== by 0x10B1BA47: combine_instructions (combine.c:1261) ==47649== by 0x10B1BA47: rest_of_handle_combine (combine.c:13902) ==47649== by 0x10B1BA47: (anonymous namespace)::pass_combine::execute(function*) (combine.c:13945) ==47649== by 0x10573E27: execute_one_pass(opt_pass*) (passes.c:2151) ==47649== by 0x105744C3: execute_pass_list_1(opt_pass*) (passes.c:2203) ==47649== by 0x105744DB: execute_pass_list_1(opt_pass*) (passes.c:2204) ==47649== Address 0x69d38a8 is 0 bytes after a block of size 1,720 alloc'd ==47649== at 0x402924C: malloc (vg_replace_malloc.c:296) ==47649== by 0x10C6DE73: xmalloc (xmalloc.c:147) ==47649== by 0x105B2883: regstat_init_n_sets_and_refs() (regstat.c:60) ==47649== by 0x10B1AEE3: rest_of_handle_combine (combine.c:13899) ==47649== by 0x10B1AEE3: (anonymous namespace)::pass_combine::execute(function*) (combine.c:13945) ==47649== by 0x10573E27: execute_one_pass(opt_pass*) (passes.c:2151) ==47649== by 0x105744C3: execute_pass_list_1(opt_pass*) (passes.c:2203) ==47649== by 0x105744DB: execute_pass_list_1(opt_pass*) (passes.c:2204) ==47649== by 0x1057455B: execute_pass_list(function*, opt_pass*) (passes.c:2214) ==47649== by 0x102E2157: cgraph_node::expand() (cgraphunit.c:1735) ==47649== by 0x102E3727: expand_all_functions (cgraphunit.c:1871) ==47649== by 0x102E3727: symbol_table::compile() (cgraphunit.c:2206) ==47649== by 0x102E4F93: symbol_table::finalize_compilation_unit() (cgraphunit.c:2283) ==47649== by 0x104DF877: write_global_declarations() (langhooks.c:328)
