Correct a function pre/postcondition [PR102403].

[thirdparty/gcc.git] / gcc / collect-utils.c

diff --git a/gcc/collect-utils.c b/gcc/collect-utils.c
index 921bb34d78fdb6f20e5de72b577e1c83e18ca1b7..19423d31885d400225acabe57959d4ca82402b71 100644 (file)
--- a/gcc/collect-utils.c
+++ b/gcc/collect-utils.c
@@ -1,5 +1,5 @@
 /* Utility functions used by tools like collect2 and lto-wrapper.
-   Copyright (C) 2009-2020 Free Software Foundation, Inc.
+   Copyright (C) 2009-2021 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -57,6 +57,43 @@ fatal_signal (int signum)
      so its normal effect occurs.  */
   kill (getpid (), signum);
 }
+
+/* Setup the signal handlers for the utils. */
+void
+setup_signals (void)
+{
+#ifdef SIGQUIT
+  if (signal (SIGQUIT, SIG_IGN) != SIG_IGN)
+    signal (SIGQUIT, fatal_signal);
+#endif
+  if (signal (SIGINT, SIG_IGN) != SIG_IGN)
+    signal (SIGINT, fatal_signal);
+#ifdef SIGALRM
+  if (signal (SIGALRM, SIG_IGN) != SIG_IGN)
+    signal (SIGALRM, fatal_signal);
+#endif
+#ifdef SIGHUP
+  if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
+    signal (SIGHUP, fatal_signal);
+#endif
+  if (signal (SIGSEGV, SIG_IGN) != SIG_IGN)
+    signal (SIGSEGV, fatal_signal);
+  if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
+    signal (SIGTERM, fatal_signal);
+#ifdef SIGPIPE
+  if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
+    signal (SIGPIPE, fatal_signal);
+#endif
+#ifdef SIGBUS
+  if (signal (SIGBUS, SIG_IGN) != SIG_IGN)
+    signal (SIGBUS, fatal_signal);
+#endif
+#ifdef SIGCHLD
+  /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
+     receive the signal.  A different setting is inheritable */
+  signal (SIGCHLD, SIG_DFL);
+#endif
+}
 \f
 /* Wait for a process to finish, and exit if a nonzero status is found.  */