[Bug c/37055] New: internal compiler error: in emit_unop_insn, at optabs.c:3806

["howarth at nitro dot med dot uc dot edu" <gcc-bugzilla at gcc dot gnu dot org>]

The following test cases now fail on i686-apple-datwin9...

FAIL: gcc.c-torture/compile/20020930-1.c  -Os  (internal compiler error)
FAIL: gcc.c-torture/compile/20020930-1.c  -Os  (test for excess errors)
FAIL: gcc.c-torture/compile/930506-1.c  -Os  (internal compiler error)
FAIL: gcc.c-torture/compile/930506-1.c  -Os  (test for excess errors)
FAIL: gcc.c-torture/compile/fix-trunc-mem-1.c  -Os  (internal compiler error)
FAIL: gcc.c-torture/compile/fix-trunc-mem-1.c  -Os  (test for excess errors)
FAIL: gcc.c-torture/execute/conversion.c compilation,  -Os  (internal compiler
error)
FAIL: gcc.c-torture/execute/gofast.c compilation,  -Os  (internal compiler
error)
FAIL: gcc.c-torture/unsorted/BUG11.c,  -Os   (internal compiler error)
FAIL: gcc.c-torture/unsorted/conv.c,  -Os   (internal compiler error)
FAIL: gcc.c-torture/unsorted/conv_tst.c,  -Os   (internal compiler error)
FAIL: gcc.dg/torture/fp-int-convert-double.c  -Os  (internal compiler error)
FAIL: gcc.dg/torture/fp-int-convert-double.c  -Os  (test for excess errors)
WARNING: gcc.dg/torture/fp-int-convert-double.c  -Os  compilation failed to
produce executable
FAIL: gcc.dg/torture/fp-int-convert-float.c  -Os  (internal compiler error)
FAIL: gcc.dg/torture/fp-int-convert-float.c  -Os  (test for excess errors)
WARNING: gcc.dg/torture/fp-int-convert-float.c  -Os  compilation failed to
produce executable
FAIL: gcc.dg/torture/fp-int-convert-timode.c  -Os  (internal compiler error)
FAIL: gcc.dg/torture/fp-int-convert-timode.c  -Os  (test for excess errors)
WARNING: gcc.dg/torture/fp-int-convert-timode.c  -Os  compilation failed to
produce executable

These all fail with errors of the form...

Executing on host:
/sw/src/fink.build/gcc44-4.3.999-20080807/darwin_objdir/gcc/xgcc
-B/sw/src/fink.build/gcc44-4.3.999-20080807/darwin_objdir/gcc/  -w  -Os  
-fno-show-column -c  -o /sw/src/fink.build/gcc44-4.3.999
-20080807/darwin_objdir/gcc/testsuite/gcc/BUG11.o
/sw/src/fink.build/gcc44-4.3.999-20080807/gcc-4.4-20080807/gcc/testsuite/gcc.c-torture/unsorted/BUG11.c
   (timeout = 300)
/sw/src/fink.build/gcc44-4.3.999-20080807/gcc-4.4-20080807/gcc/testsuite/gcc.c-torture/unsorted/BUG11.c:
In function 'foo':
/sw/src/fink.build/gcc44-4.3.999-20080807/gcc-4.4-20080807/gcc/testsuite/gcc.c-torture/unsorted/BUG11.c:6:
internal compiler error: in emit_unop_insn, at optabs.c:3806
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
compiler exited with status 1
output is:
/sw/src/fink.build/gcc44-4.3.999-20080807/gcc-4.4-20080807/gcc/testsuite/gcc.c-torture/unsorted/BUG11.c:
In function 'foo':
/sw/src/fink.build/gcc44-4.3.999-20080807/gcc-4.4-20080807/gcc/testsuite/gcc.c-torture/unsorted/BUG11.c:6:
internal compiler error: in emit_unop_insn, at optabs.c:3806
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

FAIL: gcc.c-torture/unsorted/BUG11.c,  -Os   (internal compiler error)

This failure did not occur in gcc trunk on 20080805. The suspect checkin
appears to be...

http://gcc.gnu.org/ml/gcc-patches/2008-08/msg00355.html

Unfortunately this patch doesn't cleanly regress out so I can't confirm that.
This issue
is also reported to happen on Linux with SSE fpmath.


-- 
           Summary: internal compiler error: in emit_unop_insn, at
                    optabs.c:3806
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: howarth at nitro dot med dot uc dot edu
 GCC build triplet: i686-apple-darwin9
  GCC host triplet: i686-apple-darwin9
GCC target triplet: i686-apple-darwin9


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37055