more rigorous SIGCHLD guarding

From-SVN: r40522

gcc/ChangeLog

+2001-03-15  Bruce Korb  <bkorb@gnu.org>
+
+	* gcc.c(main): make more rigorous
+	* collect2.c(main): guard against ignoring SIGCHLD
+	* protoize.c(main): ditto
+	* gcc/fixinc/fixincl.c(initialize): ditto
+
 2001-03-15  Mark Mitchell  <mark@codesourcery.com>
 
 	* sdbout.c (sdbout_symbol): Use DECL_RTL_SET_P, SET_DECL_RTL.

gcc/collect2.c

@@ -29,6 +29,9 @@ Boston, MA 02111-1307, USA.  */
 #include "config.h"
 #include "system.h"
 #include <signal.h>
+#if ! defined( SIGCHLD ) && defined( SIGCLD )
+#  define SIGCHLD SIGCLD
+#endif
 
 #ifdef vfork /* Autoconf may define this to fork for us. */
 # define VFORK_STRING "fork"
@@ -869,6 +872,12 @@ main (argc, argv)
   COLLECT2_HOST_INITIALIZATION;
 #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
+
 /* LC_CTYPE determines the character set used by the terminal so it has be set
    to output messages correctly.  */
 

gcc/fixinc/fixincl.c

@@ -29,6 +29,9 @@ Boston, MA 02111-1307, USA.  */
 #endif
 
 #include <signal.h>
+#if ! defined( SIGCHLD ) && defined( SIGCLD )
+#  define SIGCHLD SIGCLD
+#endif
 #ifndef SEPARATE_FIX_PROC
 #include "server.h"
 #endif
@@ -249,6 +252,12 @@ ENV_TABLE
       exit (EXIT_FAILURE);
     }
 
+#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
+
 #define _ENV_(v,m,n,t)   { tSCC var[] = n;  \
   v = getenv (var); if (m && (v == NULL)) { \
   fprintf (stderr, var_not_found, var);     \

gcc/gcc.c

@@ -73,6 +73,9 @@ compilation is specified by a string called a "spec".  */
 #include "config.h"
 #include "system.h"
 #include <signal.h>
+#if ! defined( SIGCHLD ) && defined( SIGCLD )
+#  define SIGCHLD SIGCLD
+#endif
 #include "obstack.h"
 #include "intl.h"
 #include "prefix.h"
@@ -5517,9 +5520,11 @@ main (argc, argv)
   if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
     signal (SIGPIPE, fatal_error);
 #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
 
   argbuf_length = 10;
   argbuf = (const char **) xmalloc (argbuf_length * sizeof (const char *));

gcc/protoize.c

@@ -25,6 +25,9 @@ Boston, MA 02111-1307, USA.  */
 
 #include <setjmp.h>
 #include <signal.h>
+#if ! defined( SIGCHLD ) && defined( SIGCLD )
+#  define SIGCHLD SIGCLD
+#endif
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
@@ -4583,6 +4586,12 @@ main (argc, argv)
 #endif
   pname = pname ? pname+1 : argv[0];
 
+#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
+
 /* LC_CTYPE determines the character set used by the terminal so it has be set
    to output messages correctly.  */