alloca: one step towards thread-safety

[pspp] / lib / signal.in.h

diff --git a/lib/signal.in.h b/lib/signal.in.h
index 620148d3a7632c0715b3ae8b51471da847f06e88..b0c99c4aff31b859eadbed97429b64250f113859 100644 (file)
--- a/lib/signal.in.h
+++ b/lib/signal.in.h
@@ -18,6 +18,7 @@
 #if __GNUC__ >= 3
 @PRAGMA_SYSTEM_HEADER@
 #endif
+@PRAGMA_COLUMNS@
 
 #if defined __need_sig_atomic_t || defined __need_sigset_t
 /* Special invocation convention inside glibc header files.  */
@@ -71,6 +72,14 @@ typedef unsigned int sigset_t;
 #endif
 
 
+/* Maximum signal number + 1.  */
+#ifndef NSIG
+# if defined __TANDEM
+#  define NSIG 32
+# endif
+#endif
+
+
 #if @GNULIB_SIGPROCMASK@
 # if !@HAVE_POSIX_SIGNALBLOCKING@
 
@@ -80,7 +89,7 @@ typedef unsigned int sigset_t;
 #  endif
 
 /* This code supports only 32 signals.  */
-typedef int verify_NSIG_constraint[2 * (NSIG <= 32) - 1];
+typedef int verify_NSIG_constraint[NSIG <= 32 ? 1 : -1];
 
 # endif