[Debian-astro-maintainers] Bug#1096587: eso-midas: ftbfs with GCC-15

[Santiago Vila]

reopen 1096587
thanks

Hi. Sorry for the reopening, but this is failing right now in unstable
with this error:

oss.c: In function ‘osscatch’:
oss.c:141:5: warning: old-style function definition [-Wold-style-definition]
  141 | int osscatch(sig, f)
      |     ^~~~~~~~
oss.c:157:18: error: assignment to ‘__sighandler_t’ {aka ‘void (*)(int)’} from incompatible pointer type ‘FUNCTION’ {aka ‘void (*)(void)’} [-Wincompatible-pointer-types]
  157 |   act.sa_handler = f;
      |                  ^
In file included from oss.c:63:
/usr/include/signal.h:72:16: note: ‘__sighandler_t’ declared here
   72 | typedef void (*__sighandler_t) (int);
      |                ^~~~~~~~~~~~~~
oss.c:75:16: note: ‘FUNCTION’ declared here
   75 | typedef void (*FUNCTION)();     /* Pointer to Function  */
      |                ^~~~~~~~


which seems gcc-15 related to me.

Note 1: When the current version of "eso-midas" was uploaded for
unstable, gcc-15 was not the default yet. Apparently, gcc-15 was
uploaded a day later, and that made the build on hppa to FTBFS:

https://buildd.debian.org/status/fetch.php?pkg=eso-midas&arch=hppa&ver=25.05pl1.1-1&stamp=1757030205&raw=0

The way it failed on hppa 11 days ago is the same way it fails on
amd64 now if you try to rebuild it now.

Note 2: it is possible that this bug is "different" than the one originally
reported by Matthias, but the title (i.e. "FTBFS with gcc-15") still
holds, so I prefer to reopen this one instead of filing a new bug.

I've put a recent build log here:

https://people.debian.org/~sanvila/build-logs/202509/

Thanks.