add explicit 1-arg and 3-arg sig handler functions

Currently, whether the OS-level signal handler function is declared as
1-arg or 3-arg depends on the configuration. Add explicit versions of
these functions, principally so that POSIX.xs can call which version of
the handler it wants regardless of configuration: see next commit.

1 files changed, 4 insertions, 1 deletions

diff --git a/perl.c b/perl.c
index 43f6f9b00a..e6fe14f967 100644
--- a/perl.c
+++ b/perl.c
@@ -262,7 +262,10 @@ perl_construct(pTHXx)
     SvREADONLY_on(&PL_sv_placeholder);
     SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
 
-    PL_sighandlerp = (Sighandler_t) Perl_sighandler;
+    PL_sighandlerp  = Perl_sighandler;
+    PL_sighandler1p = Perl_sighandler1;
+    PL_sighandler3p = Perl_sighandler3;
+
 #ifdef PERL_USES_PL_PIDSTATUS
     PL_pidstatus = newHV();
 #endif