signal: Only handle on NSIG signals on signal functions (BZ #25657)

The upper bits of the sigset_t s not fully initialized in the signal
mask calls that return information from kernel (sigprocmask,
sigpending, and pthread_sigmask), since the exported sigset_t size
(1024 bits) is larger than Linux support one (64 or 128 bits).
It might make sigisemptyset/sigorset/sigandset fail if the mask
is filled prior the call.

This patch changes the internal signal function to handle up to
supported Linux signal number (_NSIG), the remaining bits are
untouched.

Checked on x86_64-linux-gnu and i686-linux-gnu.

1 files changed, 6 insertions, 6 deletions

diff --git a/signal/sigsetops.c b/signal/sigsetops.c
index eb89e6780e..1165377876 100644
--- a/signal/sigsetops.c
+++ b/signal/sigsetops.c
@@ -26,28 +26,28 @@
 
 int
 attribute_compat_text_section
-(__sigismember) (const __sigset_t *set, int sig)
+__sigismember_compat (const __sigset_t *set, int sig)
 {
   return __sigismember (set, sig);
 }
-compat_symbol (libc, __sigismember, __sigismember, GLIBC_2_0);
+compat_symbol (libc, __sigismember_compat, __sigismember, GLIBC_2_0);
 
 int
 attribute_compat_text_section
-(__sigaddset) (__sigset_t *set, int sig)
+__sigaddset_compat (__sigset_t *set, int sig)
 {
   __sigaddset (set, sig);
   return 0;
 }
-compat_symbol (libc, __sigaddset, __sigaddset, GLIBC_2_0);
+compat_symbol (libc, __sigaddset_compat, __sigaddset, GLIBC_2_0);
 
 int
 attribute_compat_text_section
-(__sigdelset) (__sigset_t *set, int sig)
+__sigdelset_compat (__sigset_t *set, int sig)
 {
   __sigdelset (set, sig);
   return 0;
 }
-compat_symbol (libc, __sigdelset, __sigdelset, GLIBC_2_0);
+compat_symbol (libc, __sigdelset_compat, __sigdelset, GLIBC_2_0);
 
 #endif