Bug#957501: looptools: ftbfs with GCC-10

[Matthias Klose]

Package: src:looptools
Version: 2.8-1
Severity: normal
Tags: sid bullseye
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-10

Please keep this issue open in the bug tracker for the package it
was filed for.  If a fix in another package is required, please
file a bug for the other package (or clone), and add a block in this
package. Please keep the issue open until the package can be built in
a follow-up test rebuild.

The package fails to build in a test rebuild on at least amd64 with
gcc-10/g++-10, but succeeds to build with gcc-9/g++-9. The
severity of this report will be raised before the bullseye release,
so nothing has to be done for the buster release.

The full build log can be found at:
http://people.debian.org/~doko/logs/gcc10-20200225/looptools_2.8-1_unstable_gcc10.log
The last lines of the build log are at the end of this report.

To build with GCC 10, either set CC=gcc-10 CXX=g++-10 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.

  apt-get -t=experimental install g++ 

Common build failures are new warnings resulting in build failures with
-Werror turned on, or new/dropped symbols in Debian symbols files.
For other C/C++ related build failures see the porting guide at
http://gcc.gnu.org/gcc-10/porting_to.html

[...]
f951: Warning: ‘-Werror=’ argument ‘-Werror=format-security’ is not valid for Fortran
gfortran -fstack-protector --param=ssp-buffer-size=4 -Werror=format-security -O1 -g -ffixed-line-length-none     -fno-range-check -ff2c  -DQUAD=1 -DU77EXT=0  -I. -c -o ffdxc0.o ffdxc0.F
f951: Warning: ‘-Werror=’ argument ‘-Werror=format-security’ is not valid for Fortran
gfortran -fstack-protector --param=ssp-buffer-size=4 -Werror=format-security -O1 -g -ffixed-line-length-none     -fno-range-check -ff2c  -DQUAD=1 -DU77EXT=0  -I. -c -o ffdcc0.o ffdcc0.F
gfortran -fstack-protector --param=ssp-buffer-size=4 -Werror=format-security -O1 -g -ffixed-line-length-none     -fno-range-check -ff2c  -DQUAD=1 -DU77EXT=0  -I. -c -o ffdel3.o ffdel3.F
f951: Warning: ‘-Werror=’ argument ‘-Werror=format-security’ is not valid for Fortran
f951: Warning: ‘-Werror=’ argument ‘-Werror=format-security’ is not valid for Fortran
gfortran -fstack-protector --param=ssp-buffer-size=4 -Werror=format-security -O1 -g -ffixed-line-length-none     -fno-range-check -ff2c  -DQUAD=1 -DU77EXT=0  -I. -c -o ffcel3.o ffcel3.F
f951: Warning: ‘-Werror=’ argument ‘-Werror=format-security’ is not valid for Fortran
gfortran -fstack-protector --param=ssp-buffer-size=4 -Werror=format-security -O1 -g -ffixed-line-length-none     -fno-range-check -ff2c  -DQUAD=1 -DU77EXT=0  -I. -c -o D0.o D0.F
f951: Warning: ‘-Werror=’ argument ‘-Werror=format-security’ is not valid for Fortran
gfortran -fstack-protector --param=ssp-buffer-size=4 -Werror=format-security -O1 -g -ffixed-line-length-none     -fno-range-check -ff2c  -DQUAD=1 -DU77EXT=0  -I. -c -o D0C.o D0C.F
f951: Warning: ‘-Werror=’ argument ‘-Werror=format-security’ is not valid for Fortran
D0.F:1289:36:

  929 |      &          2*(Li2omrat2(q2, s, q4, t) -
      |                                      2
......
 1289 |    dilogs = Li2omrat2(q3, t, x43(4), x43(2)) +
      |                                    1
Error: Type mismatch between actual argument at (1) and actual argument at (2) (COMPLEX(8)/REAL(8)).
D0.F:1290:38:

  929 |      &          2*(Li2omrat2(q2, s, q4, t) -
      |                                      2
......
 1290 |      &             Li2omrat2(q3, t, x43(3), x43(1)) +
      |                                      1
Error: Type mismatch between actual argument at (1) and actual argument at (2) (COMPLEX(8)/REAL(8)).
D0.F:1291:38:

  929 |      &          2*(Li2omrat2(q2, s, q4, t) -
      |                                      2
......
 1291 |      &             Li2omrat2(q4, s, x43(1), x43(3)) +
      |                                      1
Error: Type mismatch between actual argument at (1) and actual argument at (2) (COMPLEX(8)/REAL(8)).
D0.F:1292:38:

  929 |      &          2*(Li2omrat2(q2, s, q4, t) -
      |                                      2
......
 1292 |      &             Li2omrat2(q4, s, x43(2), x43(4))
      |                                      1
Error: Type mismatch between actual argument at (1) and actual argument at (2) (COMPLEX(8)/REAL(8)).
D0.F:1327:36:

  929 |      &          2*(Li2omrat2(q2, s, q4, t) -
      |                                      2
......
 1327 |    dilogs = Li2omrat2(q4, s, x43(1), x43(3)) +
      |                                    1
Error: Type mismatch between actual argument at (1) and actual argument at (2) (COMPLEX(8)/REAL(8)).
D0.F:1328:38:

  929 |      &          2*(Li2omrat2(q2, s, q4, t) -
      |                                      2
......
 1328 |      &             Li2omrat2(q4, s, x43(2), x43(4))
      |                                      1
Error: Type mismatch between actual argument at (1) and actual argument at (2) (COMPLEX(8)/REAL(8)).
make[3]: *** [makefile:131: D0.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make[3]: Leaving directory '/<<PKGBUILDDIR>>/build'
make[2]: *** [makefile:73: default] Error 2
make[2]: Leaving directory '/<<PKGBUILDDIR>>'
make[1]: *** [debian/rules:50: override_dh_auto_build] Error 2
make[1]: Leaving directory '/<<PKGBUILDDIR>>'
make: *** [debian/rules:64: build] Error 2
dpkg-buildpackage: error: debian/rules build subprocess returned exit status 2