libbb: preventive fix for SIGxxx >= 32

1 files changed, 18 insertions, 14 deletions

diff --git a/include/libbb.h b/include/libbb.h
index afc053efb..edf27c6d5 100644
--- 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()