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------------------------------------------------------------------------
On 2015-03-09T16:21:39+00:00 Matthias Klose wrote:

seen with Linaro 4.8, works on the fsf 4.8 branch, can be avoided by
using -O1

$ cat neon4.i
typedef uint8x16_t __attribute__((__vector_size__(16)));
typedef uint8x16_t unative_t;
raid6_neon4_gen_syndrome_real_d;
fn1() {
  uint8x16_t __trans_tmp_1;
  unative_t wq2;
  for (; raid6_neon4_gen_syndrome_real_d;) {
    fn2();
    fn2(wq2);
    wq2 = __trans_tmp_1;
  }
}

$ gcc-4.8 -mapcs -mabi=aapcs-linux -mno-thumb-interwork -marm -march=armv7-a -mfloat-abi=softfp -mfpu=neon -g -gdwarf-4 -O2 -std=gnu90 -fno-strict-aliasing -fno-common -fno-dwarf2-cfi-asm -funwind-tables -fno-delete-null-pointer-checks -fstack-protector -fno-omit-frame-pointer -fno-optimize-sibling-calls -fno-var-tracking-assignments -fno-inline-functions-called-once -fno-strict-overflow -fconserve-stack -ffreestanding neon4.i
neon4.i:3:1: warning: data definition has no type or storage class [enabled by default]
 raid6_neon4_gen_syndrome_real_d;
 ^
neon4.i: In function 'fn1':
neon4.i:12:1: internal compiler error: in dwarf2out_frame_debug_adjust_cfa, at dwarf2cfi.c:1078
 }
 ^
Please submit a full bug report,
with preprocessed source if appropriate.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/gcc-4.8/+bug/1429894/comments/3


** Changed in: gcc-linaro
       Status: Unknown => New

** Changed in: gcc-linaro
   Importance: Unknown => High

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https://bugs.launchpad.net/bugs/1429894

Title:
  gcc-4.8: internal compiler error: in dwarf2out_frame_debug_adjust_cfa,
  at dwarf2cfi.c:1078

Status in Linaro GCC:
  New
Status in gcc-4.8 package in Ubuntu:
  Confirmed

Bug description:
  Seeing these when trying to compile linux-lts-vivid (v3.19 kernel) on
  the trusty compiler, also on the proposed SRU version:

    lib/raid6/neon4.c: In function 'raid6_neon4_gen_syndrome_real':
    lib/raid6/neon4.c:113:1: internal compiler error: in dwarf2out_frame_debug_adjust_cfa, at dwarf2cfi.c:1078
     }
     ^
     Please submit a full bug report,
    with preprocessed source if appropriate.
    See <file:///usr/share/doc/gcc-4.8/README.Bugs> for instructions.
    Preprocessed source stored into /tmp/ccg57WPc.out file, please attach this to your bugreport.

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