[Bug middle-end/56657] New: [GCC 4.6/4.7] ICE - error: unrecognizable insn.

[nkbj1970 at hotmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56657



             Bug #: 56657

           Summary: [GCC 4.6/4.7] ICE - error: unrecognizable insn.

    Classification: Unclassified

           Product: gcc

           Version: 4.7.2

            Status: UNCONFIRMED

          Severity: major

          Priority: P3

         Component: middle-end

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

        ReportedBy: nkbj1...@hotmail.com

            Target: *-*-mingw32





Created attachment 29693

  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29693

Test case.



I got this ICE when cross-building UFRaw (http://ufraw.sourceforge.net) for

Windows using MXE (http://mxe.cc). I have tried GCC 4.7.2, 4.7.0, 4.6.3, and

4.6.0. All crash with the same error. GCC 4.5.4 works.



The output is:

  CC     ufraw_writer.o

ufraw_writer.c: In function 'ufraw_write_image':

ufraw_writer.c:790:1: error: unrecognizable insn:

(insn 214 213 215 19 (set (mem/v/f/c:SI (plus:SI (reg/f:SI 54

virtual-stack-vars)

                (const_int -656 [0xfffffffffffffd70])) [2 out+0 S4 A64])

        (const:SI (plus:SI (symbol_ref:SI ("_iob") [flags 0x440] <var_decl

0x2b94ad99ed20 _iob>)

                (const_int 32 [0x20])))) ufraw_writer.c:334 -1

     (nil))

ufraw_writer.c:790:1: internal compiler error: in extract_insn, at recog.c:2123

Please submit a full bug report,

with preprocessed source if appropriate.

See <http://gcc.gnu.org/bugs.html> for instructions.

make[2]: *** [ufraw_writer.o] Error 1



I have attached a small test case which also shows the error compiled with

'i686-pc-mingw32-g++ -c insn.cc' (it happens for both c and c++ code):

insn.cc: In function 'void f()':

insn.cc:3:29: error: unrecognizable insn:

(insn 8 7 9 3 (set (mem/v/f/c:SI (symbol_ref:SI ("_ZL2fd") [flags 0x2]

<var_decl 0x7f5562fae780 fd>) [0 fd+0 S4 A32])

        (const:SI (plus:SI (symbol_ref:SI ("_iob") [flags 0x440] <var_decl

0x7f5562fae140 _iob>)

                (const_int 32 [0x20])))) insn.cc:3 -1

     (nil))

insn.cc:3:29: internal compiler error: in extract_insn, at recog.c:2123

Please submit a full bug report,

with preprocessed source if appropriate.

See <http://gcc.gnu.org/bugs.html> for instructions.



Best regards,

Niels Kristian Bech Jensen