Strange errors running gcc tests on Cygwin

[Daniel Santos <daniel dot santos at pobox dot com>]

Hello. I'm trying to validate a gcc patchset that affects msabi 
functions, so I need good test results on Cygwin, but my unpatched tests 
are getting hundreds of failures for which I cannot determine the cause. 
I'm running Cygwin 64 bit on Windows 7 in a qemu vm (with kvm).  My 
sources are on a C: drive (gcc's HEAD a from a few days ago), but I 
didn't make that device large enough, so I had to add a second device on 
D for the builds.  I have cygdrive set to /  (in /etc/fstab, I have 
"none            /       cygdrive binary,posix=0,user 0 0"), but the 
file names it's printing is using the D: format instead of /d.  Example:

FAIL: gfortran.dg/coarray/sync_3.f90 -fcoarray=single  -O2   output 
pattern test, is 
D:/builds/head-test-unpatched-x86_64-pc-cygwin/gcc/testsuite/gfortran2/sync_3.exe: 
error while loading shared libraries: cyggfortran-4.dll: cannot open 
shared object file: No such file or directory

That might not actually be the problem. I do NOT have fortran 
installed.  I have run a successful "make bootstrap" so the build tree 
should have the correct Fortran libs.  The file "cyggfortran-4.dll" does 
exist at the location 
/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/libgfortran/.libs/cyggfortran-4.dll. 
The even stranger part is that these errors aren't in the build from my 
patched sources.  Maybe something changed in my environment?  I ran my 
patched tests firsts, which resulted in much fewer failures and I 
haven't re-run them yet to see if it's failing now or not. Any ideas?

This is the snippet from the log for the above failure:

Executing on host: 
/d/builds/head-test-unpatched-x86_64-pc-cygwin/gcc/testsuite/gfortran2/../../gfortran 
-B/d/builds/head-test-unpatched-x86_64-pc-cygwin/gcc/testsuite/gfortran2/../../ 
-B/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libgfortran/ 
/c/Users/daniel/proj/sys/gcc/work0/gcc/testsuite/gfortran.dg/coarray/sync_3.f90 
-fno-diagnostics-show-caret -fdiagnostics-color=never -fcoarray=single  
-O2   -fcheck=all 
-B/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libgfortran/.libs 
-L/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libgfortran/.libs 
-B/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libquadmath/.libs 
-L/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libquadmath/.libs 
-o ./sync_3.exe    (timeout = 300)
spawn 
/d/builds/head-test-unpatched-x86_64-pc-cygwin/gcc/testsuite/gfortran2/../../gfortran 
-B/d/builds/head-test-unpatched-x86_64-pc-cygwin/gcc/testsuite/gfortran2/../../ 
-B/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libgfortran/ 
/c/Users/daniel/proj/sys/gcc/work0/gcc/testsuite/gfortran.dg/coarray/sync_3.f90 
-fno-diagnostics-show-caret -fdiagnostics-color=never -fcoarray=single 
-O2 -fcheck=all 
-B/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libgfortran/.libs 
-L/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libgfortran/.libs 
-B/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libquadmath/.libs 
-L/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libquadmath/.libs 
-o ./sync_3.exe
PASS: gfortran.dg/coarray/sync_3.f90 -fcoarray=single  -O2   (test for 
excess errors)
Setting LD_LIBRARY_PATH to 
.:/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libgfortran/.libs:/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libquadmath/.libs:/d/builds/head-test-unpatched-x86_64-pc-cygwin/gcc:.:/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libgfortran/.libs:/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libquadmath/.libs:/d/builds/head-test-unpatched-x86_64-pc-cygwin/gcc
spawn [open ...]
D:/builds/head-test-unpatched-x86_64-pc-cygwin/gcc/testsuite/gfortran2/sync_3.exe: 
error while loading shared libraries: cyggfortran-4.dll: cannot open 
shared object file: No such file or directory
PASS: gfortran.dg/coarray/sync_3.f90 -fcoarray=single  -O2 execution test
FAIL: gfortran.dg/coarray/sync_3.f90 -fcoarray=single  -O2   output 
pattern test, is 
D:/builds/head-test-unpatched-x86_64-pc-cygwin/gcc/testsuite/gfortran2/sync_3.exe: 
error while loading shared libraries: cyggfortran-4.dll: cannot open 
shared object file: No such file or directory
, should match Fortran runtime error: Invalid image number -1 in SYNC IMAGES
Executing on host: 
/d/builds/head-test-unpatched-x86_64-pc-cygwin/gcc/testsuite/gfortran2/../../gfortran 
-B/d/builds/head-test-unpatched-x86_64-pc-cygwin/gcc/testsuite/gfortran2/../../ 
-B/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libgfortran/ 
/c/Users/daniel/proj/sys/gcc/work0/gcc/testsuite/gfortran.dg/coarray/sync_3.f90 
-fno-diagnostics-show-caret -fdiagnostics-color=never -fcoarray=lib  
-O2  -lcaf_single  -fcheck=all 
-B/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libgfortran/.libs 
-L/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libgfortran/.libs 
-B/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libquadmath/.libs 
-L/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libquadmath/.libs 
-o ./sync_3.exe    (timeout = 300)
spawn 
/d/builds/head-test-unpatched-x86_64-pc-cygwin/gcc/testsuite/gfortran2/../../gfortran 
-B/d/builds/head-test-unpatched-x86_64-pc-cygwin/gcc/testsuite/gfortran2/../../ 
-B/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libgfortran/ 
/c/Users/daniel/proj/sys/gcc/work0/gcc/testsuite/gfortran.dg/coarray/sync_3.f90 
-fno-diagnostics-show-caret -fdiagnostics-color=never -fcoarray=lib -O2 
-lcaf_single -fcheck=all 
-B/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libgfortran/.libs 
-L/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libgfortran/.libs 
-B/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libquadmath/.libs 
-L/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libquadmath/.libs 
-o ./sync_3.exe
PASS: gfortran.dg/coarray/sync_3.f90 -fcoarray=lib  -O2 -lcaf_single  
(test for excess errors)
Setting LD_LIBRARY_PATH to 
.:/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libgfortran/.libs:/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libquadmath/.libs:/d/builds/head-test-unpatched-x86_64-pc-cygwin/gcc:.:/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libgfortran/.libs:/d/builds/head-test-unpatched-x86_64-pc-cygwin/x86_64-pc-cygwin/./libquadmath/.libs:/d/builds/head-test-unpatched-x86_64-pc-cygwin/gcc
spawn [open ...]
D:/builds/head-test-unpatched-x86_64-pc-cygwin/gcc/testsuite/gfortran2/sync_3.exe: 
error while loading shared libraries: cyggfortran-4.dll: cannot open 
shared object file: No such file or directory
PASS: gfortran.dg/coarray/sync_3.f90 -fcoarray=lib  -O2 -lcaf_single  
execution test
FAIL: gfortran.dg/coarray/sync_3.f90 -fcoarray=lib  -O2 -lcaf_single  
output pattern test, is 
D:/builds/head-test-unpatched-x86_64-pc-cygwin/gcc/testsuite/gfortran2/sync_3.exe: 
error while loading shared libraries: cyggfortran-4.dll: cannot open 
shared object file: No such file or directory
, should match Fortran runtime error: Invalid image number -1 in SYNC IMAGES


Also, this is how I have configured gcc:

/c/Users/daniel/proj/sys/gcc/work0/configure --host=x86_64-pc-cygwin 
--build=x86_64-pc-cygwin --target=x86_64-pc-cygwin 
--prefix=/home/daniel/local/gcc-head-test-unpatched-x86_64-pc-cygwin 
--enable-stage1-checking=yes,rtl --enable-lto --enable-gold=yes 
--enable-bootstrap --with-system-zlib


Thanks,
Daniel



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