[Bug debug/59575] [4.9 regression] ICE in maybe_record_trace_start, at dwarf2cfi.c:2239

[rmansfield at qnx dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59575

--- Comment #16 from Ryan Mansfield <rmansfield at qnx dot com> ---
(In reply to Jakub Jelinek from comment #15)
> Created attachment 31943 [details]
> gcc49-pr59575.patch
> 
> Updated patch, which should now handle the dummy pushes also in
> arm_unwind_emit_sequence.  Untested as before, just it doesn't ICE on the
> source you've attached anymore.

Thanks for the patch, but this one ICEs configuring libgcc. e.g.

configure:4222: checking whether to use setjmp/longjmp exceptions
configure:: /home/ryan/gnu/gcc/trunk/arm-eabi/./gcc/xgcc
-B/home/ryan/gnu/gcc/trunk/arm-eabi/./gcc/
-B/home/ryan/x-tools/arm-unknown-linux-gnueabi/arm-unknown-linux-gnueabi/bin/
-B/home/ryan/x-tools/arm-unknown-linux-gnueabi/arm-unknown-linux-gnueabi/lib/
-isystem
/home/ryan/x-tools/arm-unknown-linux-gnueabi/arm-unknown-linux-gnueabi/include
-isystem
/home/ryan/x-tools/arm-unknown-linux-gnueabi/arm-unknown-linux-gnueabi/sys-include
   -c --save-temps -fexceptions  conftest.c >&5

conftest.c: In function 'foo':
conftest.c:19:1: internal compiler error: Segmentation fault
 }
 ^
0x95cbcf crash_signal
        ../../gcc/toplev.c:337
0xbef5a6 arm_unwind_emit_sequence
        ../../gcc/config/arm/arm.c:28729
0xbef5a6 arm_unwind_emit
        ../../gcc/config/arm/arm.c:28970
0x708ede final_scan_insn(rtx_def*, _IO_FILE*, int, int, int*)
        ../../gcc/final.c:2978
0x709885 final(rtx_def*, _IO_FILE*, int)
        ../../gcc/final.c:2024
0x709ca9 rest_of_handle_final
        ../../gcc/final.c:4438
0x709ca9 execute
        ../../gcc/final.c:4513
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