[Bug middle-end/28160] New: Bogus "size of array 'foo' is too large" error with -mms-bitfields

[kkojima at gcc dot gnu dot org]

Several g++ tests in tmpdir-g++.dg-struct-layout-1 fail during
the compilation with the error message like

  error: size of array 'foo' is too large

with -mms-bitfields.  A reduced testcase is

typedef long int along __attribute__((aligned (32)));
struct S
{
  unsigned char a;
  along d:130;
  int e:66;
} A[1];

It looks the ms-bitfield code in stor-layout.c doesn't take
the bit field with excessive size into account and it makes
the negative remaining_in_alignment which causes the above
error.


-- 
           Summary: Bogus "size of array 'foo' is too large" error with -
                    mms-bitfields
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: rejects-valid
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: kkojima at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28160