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-rw-r--r--include/ruby/intern.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/ruby/intern.h b/include/ruby/intern.h
index b8c43b2717..a43d4d31ab 100644
--- a/include/ruby/intern.h
+++ b/include/ruby/intern.h
@@ -472,7 +472,7 @@ VALUE rb_f_kill(int, VALUE*);
void rb_gc_mark_trap_list(void);
#ifdef POSIX_SIGNAL
#define posix_signal ruby_posix_signal
-void posix_signal(int, RETSIGTYPE (*)(int));
+RETSIGTYPE (*posix_signal(int, RETSIGTYPE (*)(int)))(int);
#endif
void ruby_sig_finalize(void);
void rb_trap_exit(void);