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signal.c: warn at unresserved signals

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59051 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2017-06-09 08:30:24 +00:00
parent 39fbb2ea5f
commit 9f4db3bcdb
1 changed files with 7 additions and 4 deletions
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11
signal.c
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@ -1386,7 +1386,10 @@ sig_list(void)
return h; return h;
} }
#define install_sighandler_fail(signum) rb_bug("failed to install "signum" handler") #define install_sighandler_fail(signame, signum) \
(reserved_signal_p(signum) ? \
rb_bug("failed to install "signame" handler") : \
perror("failed to install "signame" handler"))
static int static int
install_sighandler(int signum, sighandler_t handler) install_sighandler(int signum, sighandler_t handler)
{ {
@ -1402,8 +1405,8 @@ install_sighandler(int signum, sighandler_t handler)
} }
#ifndef __native_client__ #ifndef __native_client__
# define install_sighandler(signum, handler) \ # define install_sighandler(signum, handler) \
(install_sighandler(signum, handler) && reserved_signal_p(signum) ? \ (install_sighandler(signum, handler) ? \
install_sighandler_fail(#signum) : (void)0) install_sighandler_fail(#signum, signum) : (void)0)
#endif #endif
#if defined(SIGCLD) || defined(SIGCHLD) #if defined(SIGCLD) || defined(SIGCHLD)
@ -1424,7 +1427,7 @@ init_sigchld(int sig)
} }
# ifndef __native_client__ # ifndef __native_client__
# define init_sigchld(signum) \ # define init_sigchld(signum) \
(init_sigchld(signum) ? install_sighandler_fail(#signum) : (void)0) (init_sigchld(signum) ? install_sighandler_fail(#signum, signum) : (void)0)
# endif # endif
#endif #endif