[Bug ld/19531] ld fails to build proper executables in several cases on x64_64-w64-mingw32

[address@hidden]

https://sourceware.org/bugzilla/show_bug.cgi?id=19531

--- Comment #15 from Rainer Emrich <address@hidden> ---
(In reply to Nick Clifton from comment #12)
> Hi Rainer,
> Would you mind trying out patch VII in PR 19803 and see if that makes a
> difference ?
> 
> https://sourceware.org/bugzilla/show_bug.cgi?id=19803
> 
> Cheers
>   Nick

The patch cures nearly all of the failures introduces by binutils-2.26 compared
to binutils-2.25.1, so I think this patch should go in! Do you think it's
possible to backport this patch to the 2.26 branch?

FYI I add some numbers showing the differences in the several gcc testsuites
for master this patch included compared to binutils-2.25. There are still some
differences specially in the libgomp testsuite. There are a few new failures.

Complete test results for gcc are at
https://gcc.gnu.org/ml/gcc-testresults/2016-03/msg02006.html

testsuite gcc:
binutils-version    PASS  XPASS  FAIL  XFAIL  UNRESOLVED  UNSUPPORTED
2.25.1            106895     12   727    328          17         1834
2.26-patched      106841     12   725    328          17         1834

testsuite g++:
binutils-version    PASS  XPASS  FAIL  XFAIL  UNRESOLVED  UNSUPPORTED
2.25.1             93961      3   521    278          12         3785
2.26-patched       93961      3   521    278          12         3785

testsuite gfortran:
binutils-version    PASS  XPASS  FAIL  XFAIL  UNRESOLVED  UNSUPPORTED
2.25.1             41578      0   278     75           0          167
2.26-patched       41556      0   278     75           0          167

testsuite ada:
binutils-version    PASS  XPASS  FAIL  XFAIL  UNRESOLVED  UNSUPPORTED
2.25.1              2315      0     5      0           0            0
2.26-patched        2315      0     5      0           0            0

testsuite gnat:
binutils-version    PASS  XPASS  FAIL  XFAIL  UNRESOLVED  UNSUPPORTED
2.25.1              2491      0     8     22           0            4
2.26-patched        2491      0     8     22           0            4

testsuite objc:
binutils-version    PASS  XPASS  FAIL  XFAIL  UNRESOLVED  UNSUPPORTED
2.25.1              2735      0    14      6           0           68
2.26-patched        2735      0    14      6           0           68

testsuite libatomic:
binutils-version    PASS  XPASS  FAIL  XFAIL  UNRESOLVED  UNSUPPORTED
2.25.1                54      0     0      2           0            0
2.26-patched          54      0     0      2           0            0

testsuite libgomp:
binutils-version    PASS  XPASS  FAIL  XFAIL  UNRESOLVED  UNSUPPORTED
2.25.1              4859      0    26      0           6          262
2.26-patched        4804      0    51      0          36          262

testsuite libstdc++-v3:
binutils-version    PASS  XPASS  FAIL  XFAIL  UNRESOLVED  UNSUPPORTED
2.25.1              9911      0    51     67          27          890
2.26-patched        9911      0    51     67          27          890

I don't know why the sum of all tests isn't always equal between the both runs.
In the gcc and fortran testsuite the sums are unequal.

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