https://bugzilla.redhat.com/show_bug.cgi?id=2364628

            Bug ID: 2364628
           Summary: perl-EV-4.34-6.fc43 FTBFS with ExtUtils::ParseXS ≥
                    3.57: Unrecognized escape \S passed through at (eval
                    77)
           Product: Fedora
           Version: rawhide
            Status: NEW
         Component: perl-EV
          Assignee: emman...@seyman.fr
          Reporter: ppi...@redhat.com
        QA Contact: extras...@fedoraproject.org
                CC: c...@redhat.com, emman...@seyman.fr,
                    perl-devel@lists.fedoraproject.org
            Blocks: 2339432 (F43FTBFS,RAWHIDEFTBFS)
  Target Milestone: ---
    Classification: Fedora



perl-EV-4.34-6.fc43 fails to build in Fedora 43:

+ /usr/bin/make -O -j8 V=1 VERBOSE=1
Running Mkbootstrap for EV ()
chmod 644 "EV.bs"
"/usr/bin/perl" -MExtUtils::Command::MM -e 'cp_nonempty' -- EV.bs
blib/arch/auto/EV/EV.bs 644
cp EV/MakeMaker.pm blib/lib/EV/MakeMaker.pm
cp libev/ev.pod blib/lib/EV/libev.pod
cp libev/ev.h blib/lib/EV/ev.h
cp EV.pm blib/lib/EV.pm
cp EV/EVAPI.h blib/lib/EV/EVAPI.h
"/usr/bin/perl" "/usr/share/perl5/vendor_perl/ExtUtils/xsubpp"  -typemap
'/usr/share/perl5/ExtUtils/typemap' -typemap
'/home/test/fedora/perl-EV/perl-EV-4.34-build/EV-4.34/typemap'  EV.xs > EV.xsc
Unrecognized escape \S passed through at (eval 77) line 2, <__ANONIO__> line
868.
Unrecognized escape \S passed through at (eval 77) line 3, <__ANONIO__> line
868.
Unrecognized escape \S passed through at (eval 77) line 4, <__ANONIO__> line
868.
[...]
gcc -c  -Ilibev -D_REENTRANT -D_GNU_SOURCE -O2 -flto=auto -ffat-lto-objects
-fexceptions -g -grecord-gcc-switches -pipe -Wall -Wno-complain-wrong-lang
-Werror=format-security -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SO
URCE=3 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1
-fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64
-march=x86-64 -mtune=generic -fasynchronous-unwind-tab
les -fstack-clash-protection -fcf-protection -mtls-dialect=gnu2
-fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -fwrapv
-fno-strict-aliasing -I/usr/local/include -D_LARGEFILE_SOURCE
-D_FILE_OFFSET_BITS=64 
-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe
-Wall -Wno-complain-wrong-lang -Werror=format-security
-Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/us
r/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong
-specs=/usr/lib/rpm/redhat/redhat-annobin-cc1  -m64 -march=x86-64
-mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection
-fcf-protecti
on -mtls-dialect=gnu2 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer  
-DVERSION=\"4.34\" -DXS_VERSION=\"4.34\" -fPIC "-I/usr/lib64/perl5/CORE" 
-DEV_USE_REALTIME=0 -DEV_USE_SELECT=1 -DEV_USE_POLL=1 -DEV_
USE_EPOLL=1 -DEV_USE_LINUXAIO=1 -DEV_RECOMMEND_LINUXAIO=0 -DEV_USE_IOURING=1
-DEV_RECOMMEND_IOURING=0 -DEV_USE_KQUEUE=0 -DEV_USE_PORT=0 -DEV_USE_INOTIFY=1
-DEV_USE_EVENTFD=1 -DEV_USE_SIGNALFD=1  EV.c
[..,]
EV.c: In function ‘XS_EV__Watcher_is_active’:
EV.c:1472:45: error: ‘stash_’ undeclared (first use in this function); did you
mean ‘stash_io’?
 1472 |               && (SvSTASH (SvRV (ST(0))) == stash_" . (ev_watcher * =~
/ev_(S+)/, "int") . "
      |                                             ^~~~~~
      |                                             stash_io

This is triggered by upgrading perl-ExtUtils-ParseXS from 1:3.51-512.fc42 to
1:3.57-1.fc43. According to <https://github.com/Perl/perl5/issues/22353> it was
a deliberate change in ExtUtils::ParseXS and EV should adapt. A proposed fix is
quoted there.



Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=2339432
[Bug 2339432] Fedora 43 FTBFS Tracker
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