[Bug bootstrap/54643] New: Build hangs compiling unwind-arm.c

[rmansfield at qnx dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54643



             Bug #: 54643

           Summary: Build hangs compiling unwind-arm.c

    Classification: Unclassified

           Product: gcc

           Version: 4.8.0

            Status: UNCONFIRMED

          Severity: normal

          Priority: P3

         Component: bootstrap

        AssignedTo: unassig...@gcc.gnu.org

        ReportedBy: rmansfi...@qnx.com

              Host: x86_64-unknown-linux-gnu

            Target: arm-unknown-linux-gnueabi

             Build: x86_64-unknown-linux-gnu





Created attachment 28230

  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28230

preprocessed src



Compiling unwind-arm.c seems to loop endlessly.



(gdb) bt

#0  calculate_reg_deaths (death=0x7fffffffd830, insn=<optimized out>) at

../../gcc/haifa-sched.c:1682

#1  0x0000000000c6c1a7 in model_classify_pressure (insn=<optimized out>) at

../../gcc/haifa-sched.c:3097

#2  0x0000000000c712fb in model_choose_insn () at ../../gcc/haifa-sched.c:3569

#3  model_start_schedule () at ../../gcc/haifa-sched.c:3655

#4  0x0000000000c77e71 in schedule_block (target_bb=0x7fffffffdeb0) at

../../gcc/haifa-sched.c:5914

#5  0x000000000084feda in schedule_region (rgn=0) at ../../gcc/sched-rgn.c:2985

#6  schedule_insns () at ../../gcc/sched-rgn.c:3306

#7  schedule_insns () at ../../gcc/sched-rgn.c:3285

#8  0x00000000008500d3 in rest_of_handle_sched () at ../../gcc/sched-rgn.c:3499

#9  0x00000000007f5708 in execute_one_pass (pass=0x12bb560) at

../../gcc/passes.c:2206

#10 0x00000000007f5a85 in execute_pass_list (pass=0x12bb560) at

../../gcc/passes.c:2261

#11 0x00000000007f5a97 in execute_pass_list (pass=0x12bab40) at

../../gcc/passes.c:2262

#12 0x00000000005f34ec in expand_function (node=0x7ffff66b29c0) at

../../gcc/cgraphunit.c:1609

#13 0x00000000005f5159 in expand_all_functions () at

../../gcc/cgraphunit.c:1714

#14 compile () at ../../gcc/cgraphunit.c:2012

#15 0x00000000005f5965 in finalize_compilation_unit () at

../../gcc/cgraphunit.c:2089

#16 0x00000000004e2853 in c_write_global_declarations () at

../../gcc/c/c-decl.c:10116

#17 0x00000000008919bd in compile_file () at ../../gcc/toplev.c:560

#18 0x00000000008935e2 in do_compile () at ../../gcc/toplev.c:1863

#19 toplev_main (argc=4, argv=0x7fffffffe168) at ../../gcc/toplev.c:1939

#20 0x00007ffff6c4676d in __libc_start_main () from

/lib/x86_64-linux-gnu/libc.so.6

#21 0x00000000004c9c51 in _start ()