libbb: preventive fix for SIGxxx >= 32

diff --git a/include/libbb.h b/include/libbb.h
index afc053e..edf27c6 100644 (file)
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -306,21 +306,25 @@ enum {
         * SIGPROF  Profiling timer expired
         * SIGSYS   Bad argument to routine
         * SIGTRAP  Trace/breakpoint trap
+        *
+        * The only known arch with some of these sigs not fitting
+        * into 32 bits is parisc (SIGXCPU=33, SIGXFSZ=34, SIGSTKFLT=36).
+        * Dance around with long long to guard against that...
         */
-       BB_FATAL_SIGS = 0
-               + (1 << SIGHUP)
-               + (1 << SIGINT)
-               + (1 << SIGTERM)
-               + (1 << SIGPIPE)   // Write to pipe with no readers
-               + (1 << SIGQUIT)   // Quit from keyboard
-               + (1 << SIGABRT)   // Abort signal from abort(3)
-               + (1 << SIGALRM)   // Timer signal from alarm(2)
-               + (1 << SIGVTALRM) // Virtual alarm clock
-               + (1 << SIGXCPU)   // CPU time limit exceeded
-               + (1 << SIGXFSZ)   // File size limit exceeded
-               + (1 << SIGUSR1)   // Yes kids, these are also fatal!
-               + (1 << SIGUSR2)
-               + 0,
+       BB_FATAL_SIGS = (int)(0
+               + (1LL << SIGHUP)
+               + (1LL << SIGINT)
+               + (1LL << SIGTERM)
+               + (1LL << SIGPIPE)   // Write to pipe with no readers
+               + (1LL << SIGQUIT)   // Quit from keyboard
+               + (1LL << SIGABRT)   // Abort signal from abort(3)
+               + (1LL << SIGALRM)   // Timer signal from alarm(2)
+               + (1LL << SIGVTALRM) // Virtual alarm clock
+               + (1LL << SIGXCPU)   // CPU time limit exceeded
+               + (1LL << SIGXFSZ)   // File size limit exceeded
+               + (1LL << SIGUSR1)   // Yes kids, these are also fatal!
+               + (1LL << SIGUSR2)
+               + 0),
 };
 void bb_signals(int sigs, void (*f)(int));
 /* Unlike signal() and bb_signals, sets handler with sigaction()