[Bug binutils/19440] New: COFF handling bug. In particular, renders bigobj support broken.

[kyrab at mail dot ru]

https://sourceware.org/bugzilla/show_bug.cgi?id=19440

            Bug ID: 19440
           Summary: COFF handling bug. In particular, renders bigobj
                    support broken.
           Product: binutils
           Version: unspecified
            Status: NEW
          Severity: critical
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: kyrab at mail dot ru
  Target Milestone: ---

Created attachment 8895
  --> https://sourceware.org/bugzilla/attachment.cgi?id=8895&action=edit
COFF fix

There is an egregious bug in COFF handling code resulting in that any object
file containing more than 32768 sections is broken.

The problem is that 'n_scnum' is declared 'short' in include/coff/internal.h.

This leads to that PE+ bigobj format implementation doesn't in fact work
properly and also explains why having 2**16 sections as specified by Microsoft
never worked before (only 2**15 worked).

This also doesn't match other BFD code, where 'target_index' is declared 'int'
in 'bfd_section' structure.

I've attached the patch solving the problem.

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