[Bug target/43047] internal compiler error: in extract_insn, at recog.c:2048

["steven at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #8 from steven at gcc dot gnu dot org  2010-02-18 23:44 -------
I can confirm the second bug, which is a checking failure in varasm.c, with GCC
4.4.2 for arm-wince-pe:

(gdb) run
Starting program: /home/stevenb/devel/build-4.4.2/gcc/cc1 -DCRASH k.c
 ff_fill_linesize
Analyzing compilation unit

k.c:2: warning: array ?av_pix_fmt_descriptors? assumed to have one element
Performing interprocedural optimizations
 <visibility> <early_local_cleanups> <summary generate> <inline>Assembling
functions:

Breakpoint 1, fancy_abort (file=0xf5a7db "../../gcc-4.4.2/gcc/varasm.c",
line=2144, 
    function=0xf5d0e0 "assemble_variable") at
../../gcc-4.4.2/gcc/diagnostic.c:712
712       internal_error ("in %s, at %s:%d", function, trim_filename (file),
line);
(gdb) up
#1  0x0000000000b4717b in assemble_variable (decl=0x7ffff7f62000, top_level=0,
at_end=1, dont_output_data=0)
    at ../../gcc-4.4.2/gcc/varasm.c:2144
2144      gcc_assert (GET_CODE (XEXP (decl_rtl, 0)) == SYMBOL_REF);
(gdb) p debug_rtx(decl_rtl)
(mem/s/c:BLK (mem:SI (symbol_ref:SI ("@i.__imp_av_pix_fmt_descriptors")) [0 S4
A32]) [0 av_pix_fmt_descriptors+0 S4 A32])
$1 = void
(gdb) p debug_tree(decl)
 <var_decl 0x7ffff7f62000 av_pix_fmt_descriptors
    type <array_type 0x7ffff7f51d80
        type <integer_type 0x7ffff7e89600 int public SI
            size <integer_cst 0x7ffff7e7a930 constant 32>
            unit size <integer_cst 0x7ffff7e7a5a0 constant 4>
            align 32 symtab 0 alias set -1 canonical type 0x7ffff7e89600
precision 32 min <integer_cst 0x7ffff7e7a8a0 -2147483648> max <integer_cst
0x7ffff7e7a8d0 2147483647>
            pointer_to_this <pointer_type 0x7ffff7e9ba80>>
        SI size <integer_cst 0x7ffff7e7a930 32> unit size <integer_cst
0x7ffff7e7a5a0 4>
        align 32 symtab 0 alias set -1 canonical type 0x7ffff7f51d80
        domain <integer_type 0x7ffff7f51e40 type <integer_type 0x7ffff7e890c0
long unsigned int>
            SI size <integer_cst 0x7ffff7e7a930 32> unit size <integer_cst
0x7ffff7e7a5a0 4>
            align 32 symtab 0 alias set -1 canonical type 0x7ffff7f51e40
precision 32 min <integer_cst 0x7ffff7e7a5d0 0> max <integer_cst 0x7ffff7e7a5d0
0>>>
    addressable asm_written used public static external common BLK file k.c
line 2 col 32 size <integer_cst 0x7ffff7e7a930 32> unit size <integer_cst
0x7ffff7e7a5a0 4>
    align 32 attributes <tree_list 0x7ffff7f612d0>
    (mem/s/c:BLK (mem:SI (symbol_ref:SI ("@i.__imp_av_pix_fmt_descriptors")) [0
S4 A32]) [0 av_pix_fmt_descriptors+0 S4 A32]) chain <function_decl
0x7ffff7f50d00 ff_fill_linesize>>
$2 = void
(gdb) bt 10
#0  fancy_abort (file=0xf5a7db "../../gcc-4.4.2/gcc/varasm.c", line=2144, 
    function=0xf5d0e0 "assemble_variable") at
../../gcc-4.4.2/gcc/diagnostic.c:712
#1  0x0000000000b4717b in assemble_variable (decl=0x7ffff7f62000, top_level=0,
at_end=1, dont_output_data=0)
    at ../../gcc-4.4.2/gcc/varasm.c:2144
#2  0x0000000000bd868a in varpool_assemble_decl (node=0x7ffff7f56e20) at
../../gcc-4.4.2/gcc/varpool.c:356
#3  0x0000000000b8e5b4 in cgraph_output_in_order () at
../../gcc-4.4.2/gcc/cgraphunit.c:1199
#4  0x0000000000b8e89b in cgraph_optimize () at
../../gcc-4.4.2/gcc/cgraphunit.c:1306
#5  0x0000000000430eba in c_write_global_declarations () at
../../gcc-4.4.2/gcc/c-decl.c:8109
#6  0x00000000008da9d8 in compile_file () at ../../gcc-4.4.2/gcc/toplev.c:981
#7  0x00000000008dc693 in do_compile () at ../../gcc-4.4.2/gcc/toplev.c:2197
#8  0x00000000008dc702 in toplev_main (argc=3, argv=0x7fffffffe268) at
../../gcc-4.4.2/gcc/toplev.c:2229
#9  0x00000000004d883c in main (argc=3, argv=0x7fffffffe268) at
../../gcc-4.4.2/gcc/main.c:35
(gdb) 


I am unable to reproduce the "unrecognizable insn" ICE of comment #0.


-- 

steven at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2010-02-18 23:15:32         |2010-02-18 23:44:07
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43047