Win64, libidn-1.19, one failing test.

[Sisyphus]

Hi,

I build using the MinGW64 cross-compiler in the msys shell with:

./configure --enable-static --disable-shared --build=x86_64-w64-mingw32 --host=x86_64-w64-mingw32 
CC=x86_64-w64-mingw32-gcc CXX=x86_64-w64-mingw32-g++ AR=
x86_64-w64-mingw32-ar LD=x86_64-w64-mingw32-ld NM=x86_64-w64-mingw32-nm 
RANLIB=x86_64-w64-mingw32-ranlib LDFLAGS=-L/usr/local/lib 
CPPFLAGS=-I/usr/local/include --prefix=/usr/local && make && make check

Everything is fine, but one (and only one) test fails:

PASS: test-errno.exe
test-getopt.h:773: assertion failed
FAIL: test-getopt.exe

test-getopt.h contains:

769:         }
770:       else
771:         {
772:           ASSERT (strcmp (argv[0], "program") == 0);
773:           ASSERT (strcmp (argv[1], "-p") == 0);
774:           ASSERT (strcmp (argv[2], "billy") == 0);
775:           ASSERT (strcmp (argv[3], "-a") == 0);
776:           ASSERT (strcmp (argv[4], "donald") == 0);
777:           ASSERT (strcmp (argv[5], "duck") == 0);
778:           ASSERT (strcmp (argv[6], "bar") == 0);

How would that error arise ?
What further action can I take to help answer the previous question ?

When I build using a 32-bit MinGW compiler test-getopt.exe passes, as do all 
of the other tests (except, of course, those that are skipped).

Cheers,
Rob